mirror of
https://github.com/minetest/irrlicht.git
synced 2024-11-05 09:50:41 +01:00
2ae2a551a6
GLES drivers adapted, but only did make compile-tests. git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/branches/ogl-es@6038 dfc29bdd-3216-0410-991c-e03cc46cb475
1085 lines
32 KiB
C++
1085 lines
32 KiB
C++
// Copyright (C) 2002-2012 Nikolaus Gebhardt
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in irrlicht.h
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#include "CGeometryCreator.h"
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#include "SAnimatedMesh.h"
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#include "SMeshBuffer.h"
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#include "SMesh.h"
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#include "IMesh.h"
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#include "IVideoDriver.h"
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#include "os.h"
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namespace irr
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{
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namespace scene
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{
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IMesh* CGeometryCreator::createCubeMesh(const core::vector3df& size, ECUBE_MESH_TYPE type) const
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{
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SMesh* mesh = new SMesh;
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const video::SColor clr(255,255,255,255);
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if ( type == ECMT_1BUF_12VTX_NA )
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{
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SMeshBuffer* buffer = new SMeshBuffer();
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// Create indices (pos, neg describes normal direction of front-face)
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const u16 u[36] = { 0,2,1, 0,3,2, // NEG_Z
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1,5,4, 1,2,5, // POS_X
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4,6,7, 4,5,6, // POS_Z
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7,3,0, 7,6,3, // NEG_X
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9,5,2, 9,8,5, // POS_Y
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0,11,10, 0,10,7}; // NEG_Y
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buffer->Indices.set_used(36);
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for (u32 i=0; i<36; ++i)
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buffer->Indices[i] = u[i];
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// Create vertices
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buffer->Vertices.reallocate(12);
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buffer->Vertices.push_back(video::S3DVertex(0,0,0, -1,-1,-1, clr, 0, 1)); // 0
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buffer->Vertices.push_back(video::S3DVertex(1,0,0, 1,-1,-1, clr, 1, 1)); // 1
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buffer->Vertices.push_back(video::S3DVertex(1,1,0, 1, 1,-1, clr, 1, 0)); // 2
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buffer->Vertices.push_back(video::S3DVertex(0,1,0, -1, 1,-1, clr, 0, 0)); // 3
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buffer->Vertices.push_back(video::S3DVertex(1,0,1, 1,-1, 1, clr, 0, 1)); // 4
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buffer->Vertices.push_back(video::S3DVertex(1,1,1, 1, 1, 1, clr, 0, 0)); // 5
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buffer->Vertices.push_back(video::S3DVertex(0,1,1, -1, 1, 1, clr, 1, 0)); // 6
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buffer->Vertices.push_back(video::S3DVertex(0,0,1, -1,-1, 1, clr, 1, 1)); // 7
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buffer->Vertices.push_back(video::S3DVertex(0,1,1, -1, 1, 1, clr, 0, 1)); // 8
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buffer->Vertices.push_back(video::S3DVertex(0,1,0, -1, 1,-1, clr, 1, 1)); // 9
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buffer->Vertices.push_back(video::S3DVertex(1,0,1, 1,-1, 1, clr, 1, 0)); // 10
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buffer->Vertices.push_back(video::S3DVertex(1,0,0, 1,-1,-1, clr, 0, 0)); // 11
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// Recalculate bounding box and set cube size
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buffer->BoundingBox.reset(0,0,0);
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for (u32 i=0; i<12; ++i)
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{
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buffer->Vertices[i].Pos -= core::vector3df(0.5f, 0.5f, 0.5f);
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buffer->Vertices[i].Pos *= size;
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buffer->Vertices[i].Normal.normalize();
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buffer->BoundingBox.addInternalPoint(buffer->Vertices[i].Pos);
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}
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mesh->addMeshBuffer(buffer);
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buffer->drop();
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}
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else if ( type == ECMT_6BUF_4VTX_NP )
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{
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for ( int b=0; b<6; ++b )
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{
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SMeshBuffer* buffer = new SMeshBuffer();
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// Create indices
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const u16 u[6] = { 0,2,1,0,3,2};
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buffer->Indices.set_used(6);
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for ( int i=0; i<6; ++i )
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buffer->Indices[i] = u[i];
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// Create vertices
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buffer->Vertices.reallocate(4);
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switch ( b )
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{
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case 0:
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buffer->Vertices.push_back(video::S3DVertex(0,0,0, 0, 0,-1, clr, 0, 1));
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buffer->Vertices.push_back(video::S3DVertex(1,0,0, 0, 0,-1, clr, 1, 1));
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buffer->Vertices.push_back(video::S3DVertex(1,1,0, 0, 0,-1, clr, 1, 0));
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buffer->Vertices.push_back(video::S3DVertex(0,1,0, 0, 0,-1, clr, 0, 0));
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break;
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case 1:
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buffer->Vertices.push_back(video::S3DVertex(1,0,0, 1, 0, 0, clr, 0, 1));
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buffer->Vertices.push_back(video::S3DVertex(1,0,1, 1, 0, 0, clr, 1, 1));
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buffer->Vertices.push_back(video::S3DVertex(1,1,1, 1, 0, 0, clr, 1, 0));
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buffer->Vertices.push_back(video::S3DVertex(1,1,0, 1, 0, 0, clr, 0, 0));
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break;
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case 2:
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buffer->Vertices.push_back(video::S3DVertex(1,0,1, 0, 0, 1, clr, 0, 1));
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buffer->Vertices.push_back(video::S3DVertex(0,0,1, 0, 0, 1, clr, 1, 1));
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buffer->Vertices.push_back(video::S3DVertex(0,1,1, 0, 0, 1, clr, 1, 0));
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buffer->Vertices.push_back(video::S3DVertex(1,1,1, 0, 0, 1, clr, 0, 0));
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break;
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case 3:
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buffer->Vertices.push_back(video::S3DVertex(0,0,1, -1, 0, 0, clr, 0, 1));
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buffer->Vertices.push_back(video::S3DVertex(0,0,0, -1, 0, 0, clr, 1, 1));
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buffer->Vertices.push_back(video::S3DVertex(0,1,0, -1, 0, 0, clr, 1, 0));
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buffer->Vertices.push_back(video::S3DVertex(0,1,1, -1, 0, 0, clr, 0, 0));
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break;
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case 4:
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buffer->Vertices.push_back(video::S3DVertex(0,1,0, 0, 1, 0, clr, 0, 1));
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buffer->Vertices.push_back(video::S3DVertex(1,1,0, 0, 1, 0, clr, 1, 1));
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buffer->Vertices.push_back(video::S3DVertex(1,1,1, 0, 1, 0, clr, 1, 0));
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buffer->Vertices.push_back(video::S3DVertex(0,1,1, 0, 1, 0, clr, 0, 0));
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break;
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case 5:
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buffer->Vertices.push_back(video::S3DVertex(0,0,1, 0, -1, 0, clr, 0, 1));
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buffer->Vertices.push_back(video::S3DVertex(1,0,1, 0, -1, 0, clr, 1, 1));
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buffer->Vertices.push_back(video::S3DVertex(1,0,0, 0, -1, 0, clr, 1, 0));
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buffer->Vertices.push_back(video::S3DVertex(0,0,0, 0, -1, 0, clr, 0, 0));
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break;
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}
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// Recalculate bounding box and set cube size
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for (u32 i=0; i<4; ++i)
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{
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buffer->Vertices[i].Pos -= core::vector3df(0.5f, 0.5f, 0.5f);
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buffer->Vertices[i].Pos *= size;
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if ( i == 0 )
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buffer->BoundingBox.reset(buffer->Vertices[i].Pos);
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else
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buffer->BoundingBox.addInternalPoint(buffer->Vertices[i].Pos);
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}
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mesh->addMeshBuffer(buffer);
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buffer->drop();
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}
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}
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mesh->recalculateBoundingBox();
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return mesh;
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}
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// creates a hill plane
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IMesh* CGeometryCreator::createHillPlaneMesh(
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const core::dimension2d<f32>& tileSize,
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const core::dimension2d<u32>& tc, video::SMaterial* material,
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f32 hillHeight, const core::dimension2d<f32>& ch,
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const core::dimension2d<f32>& textureRepeatCount) const
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{
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core::dimension2d<u32> tileCount = tc;
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core::dimension2d<f32> countHills = ch;
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if (countHills.Width < 0.01f)
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countHills.Width = 1.f;
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if (countHills.Height < 0.01f)
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countHills.Height = 1.f;
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// center
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const core::position2d<f32> center((tileSize.Width * tileCount.Width) * 0.5f, (tileSize.Height * tileCount.Height) * 0.5f);
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// texture coord step
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const core::dimension2d<f32> tx(
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textureRepeatCount.Width / tileCount.Width,
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textureRepeatCount.Height / tileCount.Height);
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// add one more point in each direction for proper tile count
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++tileCount.Height;
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++tileCount.Width;
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SMeshBuffer* buffer = new SMeshBuffer();
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video::S3DVertex vtx;
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vtx.Color.set(255,255,255,255);
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// create vertices from left-front to right-back
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u32 x;
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f32 sx=0.f, tsx=0.f;
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for (x=0; x<tileCount.Width; ++x)
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{
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f32 sy=0.f, tsy=0.f;
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for (u32 y=0; y<tileCount.Height; ++y)
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{
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vtx.Pos.set(sx - center.X, 0, sy - center.Y);
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vtx.TCoords.set(tsx, 1.0f - tsy);
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if (core::isnotzero(hillHeight))
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vtx.Pos.Y = sinf(vtx.Pos.X * countHills.Width * core::PI / center.X) *
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cosf(vtx.Pos.Z * countHills.Height * core::PI / center.Y) *
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hillHeight;
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buffer->Vertices.push_back(vtx);
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sy += tileSize.Height;
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tsy += tx.Height;
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}
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sx += tileSize.Width;
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tsx += tx.Width;
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}
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// create indices
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for (x=0; x<tileCount.Width-1; ++x)
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{
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for (u32 y=0; y<tileCount.Height-1; ++y)
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{
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const s32 current = x*tileCount.Height + y;
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buffer->Indices.push_back(current);
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buffer->Indices.push_back(current + 1);
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buffer->Indices.push_back(current + tileCount.Height);
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buffer->Indices.push_back(current + 1);
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buffer->Indices.push_back(current + 1 + tileCount.Height);
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buffer->Indices.push_back(current + tileCount.Height);
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}
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}
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// recalculate normals
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for (u32 i=0; i<buffer->Indices.size(); i+=3)
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{
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const core::vector3df normal = core::plane3d<f32>(
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buffer->Vertices[buffer->Indices[i+0]].Pos,
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buffer->Vertices[buffer->Indices[i+1]].Pos,
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buffer->Vertices[buffer->Indices[i+2]].Pos).Normal;
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buffer->Vertices[buffer->Indices[i+0]].Normal = normal;
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buffer->Vertices[buffer->Indices[i+1]].Normal = normal;
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buffer->Vertices[buffer->Indices[i+2]].Normal = normal;
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}
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if (material)
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buffer->Material = *material;
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buffer->recalculateBoundingBox();
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buffer->setHardwareMappingHint(EHM_STATIC);
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SMesh* mesh = new SMesh();
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mesh->addMeshBuffer(buffer);
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mesh->recalculateBoundingBox();
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buffer->drop();
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return mesh;
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}
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namespace
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{
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// Return the position on an exponential curve. Input from 0 to 1.
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float geopos(float pos)
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{
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pos = core::clamp<float>(pos, 0, 1);
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pos *= 5;
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const float out = powf(2.5f, pos - 5);
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return out;
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}
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}
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//! Create a geoplane.
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IMesh* CGeometryCreator::createGeoplaneMesh(f32 radius, u32 rows, u32 columns) const
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{
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using namespace core;
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using namespace video;
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rows = clamp<u32>(rows, 3, 2048);
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columns = clamp<u32>(columns, 3, 2048);
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SMeshBuffer * const mb = new SMeshBuffer();
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S3DVertex v(0, 0, 0, 0, 1, 0, SColor(255, 255, 255, 255), 0, 0);
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const float anglestep = (2 * PI) / columns;
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mb->Vertices.reallocate((rows * columns) + 1);
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mb->Indices.reallocate((((rows - 2) * columns * 2) + columns) * 3);
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u32 i, j;
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mb->Vertices.push_back(v);
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for (j = 1; j < rows; j++)
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{
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const float len = radius * geopos((float) j/(rows-1));
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for (i = 0; i < columns; i++)
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{
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const float angle = anglestep * i;
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v.Pos = vector3df(len * sinf(angle), 0, len * cosf(angle));
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mb->Vertices.push_back(v);
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}
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}
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// Indices
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// First the inner fan
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for (i = 0; i < columns; i++)
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{
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mb->Indices.push_back(0);
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mb->Indices.push_back(1 + i);
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if (i == columns - 1)
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mb->Indices.push_back(1);
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else
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mb->Indices.push_back(2 + i);
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}
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// Then the surrounding quads
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for (j = 0; j < rows - 2; j++)
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{
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for (i = 0; i < columns; i++)
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{
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u32 start = ((j * columns) + i) + 1;
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u32 next = start + 1;
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u32 far = (((j + 1) * columns) + i) + 1;
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u32 farnext = far + 1;
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if (i == columns - 1)
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{
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next = ((j * columns)) + 1;
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farnext = (((j + 1) * columns)) + 1;
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}
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mb->Indices.push_back(start);
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mb->Indices.push_back(far);
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mb->Indices.push_back(next);
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mb->Indices.push_back(next);
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mb->Indices.push_back(far);
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mb->Indices.push_back(farnext);
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}
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}
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// Done
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SMesh * const mesh = new SMesh();
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mesh->addMeshBuffer(mb);
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mb->recalculateBoundingBox();
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mb->setHardwareMappingHint(EHM_STATIC);
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mesh->recalculateBoundingBox();
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mb->drop();
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return mesh;
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}
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IMesh* CGeometryCreator::createTerrainMesh(video::IImage* texture,
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video::IImage* heightmap, const core::dimension2d<f32>& stretchSize,
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f32 maxHeight, video::IVideoDriver* driver,
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const core::dimension2d<u32>& maxVtxBlockSize,
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bool debugBorders) const
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{
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if (!texture || !heightmap)
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return 0;
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// debug border
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const s32 borderSkip = debugBorders ? 0 : 1;
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video::S3DVertex vtx;
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vtx.Color.set(255,255,255,255);
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SMesh* mesh = new SMesh();
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const u32 tm = os::Timer::getRealTime()/1000;
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const core::dimension2d<u32> hMapSize= heightmap->getDimension();
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const core::dimension2d<u32> tMapSize= texture->getDimension();
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const core::position2d<f32> thRel(static_cast<f32>(tMapSize.Width) / hMapSize.Width, static_cast<f32>(tMapSize.Height) / hMapSize.Height);
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maxHeight /= 255.0f; // height step per color value
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core::position2d<u32> processed(0,0);
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while (processed.Y<hMapSize.Height)
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{
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while(processed.X<hMapSize.Width)
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{
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core::dimension2d<u32> blockSize = maxVtxBlockSize;
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if (processed.X + blockSize.Width > hMapSize.Width)
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blockSize.Width = hMapSize.Width - processed.X;
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if (processed.Y + blockSize.Height > hMapSize.Height)
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blockSize.Height = hMapSize.Height - processed.Y;
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SMeshBuffer* buffer = new SMeshBuffer();
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buffer->setHardwareMappingHint(scene::EHM_STATIC);
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buffer->Vertices.reallocate(blockSize.getArea());
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// add vertices of vertex block
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u32 y;
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core::vector2df pos(0.f, processed.Y*stretchSize.Height);
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const core::vector2df bs(1.f/blockSize.Width, 1.f/blockSize.Height);
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core::vector2df tc(0.f, 0.5f*bs.Y);
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for (y=0; y<blockSize.Height; ++y)
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{
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pos.X=processed.X*stretchSize.Width;
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tc.X=0.5f*bs.X;
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for (u32 x=0; x<blockSize.Width; ++x)
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{
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const f32 height = heightmap->getPixel(x+processed.X, y+processed.Y).getAverage() * maxHeight;
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vtx.Pos.set(pos.X, height, pos.Y);
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vtx.TCoords.set(tc);
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buffer->Vertices.push_back(vtx);
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pos.X += stretchSize.Width;
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tc.X += bs.X;
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}
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pos.Y += stretchSize.Height;
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tc.Y += bs.Y;
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}
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buffer->Indices.reallocate((blockSize.Height-1)*(blockSize.Width-1)*6);
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// add indices of vertex block
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s32 c1 = 0;
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for (y=0; y<blockSize.Height-1; ++y)
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{
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for (u32 x=0; x<blockSize.Width-1; ++x)
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{
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const s32 c = c1 + x;
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buffer->Indices.push_back(c);
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buffer->Indices.push_back(c + blockSize.Width);
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buffer->Indices.push_back(c + 1);
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buffer->Indices.push_back(c + 1);
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buffer->Indices.push_back(c + blockSize.Width);
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buffer->Indices.push_back(c + 1 + blockSize.Width);
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}
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c1 += blockSize.Width;
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}
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// recalculate normals
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for (u32 i=0; i<buffer->Indices.size(); i+=3)
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{
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const core::vector3df normal = core::plane3d<f32>(
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buffer->Vertices[buffer->Indices[i+0]].Pos,
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buffer->Vertices[buffer->Indices[i+1]].Pos,
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buffer->Vertices[buffer->Indices[i+2]].Pos).Normal;
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buffer->Vertices[buffer->Indices[i+0]].Normal = normal;
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buffer->Vertices[buffer->Indices[i+1]].Normal = normal;
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buffer->Vertices[buffer->Indices[i+2]].Normal = normal;
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}
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|
|
if (buffer->Vertices.size())
|
|
{
|
|
c8 textureName[64];
|
|
// create texture for this block
|
|
video::IImage* img = driver->createImage(texture->getColorFormat(), core::dimension2d<u32>(core::floor32(blockSize.Width*thRel.X), core::floor32(blockSize.Height*thRel.Y)));
|
|
texture->copyTo(img, core::position2di(0,0), core::recti(
|
|
core::position2d<s32>(core::floor32(processed.X*thRel.X), core::floor32(processed.Y*thRel.Y)),
|
|
core::dimension2d<u32>(core::floor32(blockSize.Width*thRel.X), core::floor32(blockSize.Height*thRel.Y))), 0);
|
|
|
|
sprintf(textureName, "terrain%u_%u", tm, mesh->getMeshBufferCount());
|
|
|
|
buffer->Material.setTexture(0, driver->addTexture(textureName, img));
|
|
|
|
if (buffer->Material.getTexture(0))
|
|
{
|
|
c8 tmp[255];
|
|
sprintf(tmp, "Generated terrain texture (%ux%u): %s",
|
|
buffer->Material.getTexture(0)->getSize().Width,
|
|
buffer->Material.getTexture(0)->getSize().Height,
|
|
textureName);
|
|
os::Printer::log(tmp);
|
|
}
|
|
else
|
|
os::Printer::log("Could not create terrain texture.", textureName, ELL_ERROR);
|
|
|
|
img->drop();
|
|
}
|
|
|
|
buffer->recalculateBoundingBox();
|
|
mesh->addMeshBuffer(buffer);
|
|
buffer->drop();
|
|
|
|
// keep on processing
|
|
processed.X += maxVtxBlockSize.Width - borderSkip;
|
|
}
|
|
|
|
// keep on processing
|
|
processed.X = 0;
|
|
processed.Y += maxVtxBlockSize.Height - borderSkip;
|
|
}
|
|
|
|
mesh->recalculateBoundingBox();
|
|
return mesh;
|
|
}
|
|
|
|
|
|
/*
|
|
a cylinder, a cone and a cross
|
|
point up on (0,1.f, 0.f )
|
|
*/
|
|
IMesh* CGeometryCreator::createArrowMesh(const u32 tesselationCylinder,
|
|
const u32 tesselationCone,
|
|
const f32 height,
|
|
const f32 cylinderHeight,
|
|
const f32 width0,
|
|
const f32 width1,
|
|
const video::SColor vtxColor0,
|
|
const video::SColor vtxColor1) const
|
|
{
|
|
SMesh* mesh = (SMesh*)createCylinderMesh(width0, cylinderHeight, tesselationCylinder, vtxColor0, false);
|
|
|
|
IMesh* mesh2 = createConeMesh(width1, height-cylinderHeight, tesselationCone, vtxColor1, vtxColor0);
|
|
for (u32 i=0; i<mesh2->getMeshBufferCount(); ++i)
|
|
{
|
|
scene::IMeshBuffer* buffer = mesh2->getMeshBuffer(i);
|
|
for (u32 j=0; j<buffer->getVertexCount(); ++j)
|
|
buffer->getPosition(j).Y += cylinderHeight;
|
|
buffer->setDirty(EBT_VERTEX);
|
|
buffer->recalculateBoundingBox();
|
|
mesh->addMeshBuffer(buffer);
|
|
}
|
|
mesh2->drop();
|
|
mesh->setHardwareMappingHint(EHM_STATIC);
|
|
|
|
mesh->recalculateBoundingBox();
|
|
return mesh;
|
|
}
|
|
|
|
|
|
/* A sphere with proper normals and texture coords */
|
|
IMesh* CGeometryCreator::createSphereMesh(f32 radius, u32 polyCountX, u32 polyCountY) const
|
|
{
|
|
// thanks to Alfaz93 who made his code available for Irrlicht on which
|
|
// this one is based!
|
|
|
|
// we are creating the sphere mesh here.
|
|
|
|
if (polyCountX < 2)
|
|
polyCountX = 2;
|
|
if (polyCountY < 2)
|
|
polyCountY = 2;
|
|
while (polyCountX * polyCountY > 32767) // prevent u16 overflow
|
|
{
|
|
polyCountX /= 2;
|
|
polyCountY /= 2;
|
|
}
|
|
|
|
const u32 polyCountXPitch = polyCountX+1; // get to same vertex on next level
|
|
|
|
SMeshBuffer* buffer = new SMeshBuffer();
|
|
|
|
buffer->Indices.reallocate((polyCountX * polyCountY) * 6);
|
|
|
|
const video::SColor clr(255, 255,255,255);
|
|
|
|
u32 level = 0;
|
|
|
|
for (u32 p1 = 0; p1 < polyCountY-1; ++p1)
|
|
{
|
|
//main quads, top to bottom
|
|
for (u32 p2 = 0; p2 < polyCountX - 1; ++p2)
|
|
{
|
|
const u32 curr = level + p2;
|
|
buffer->Indices.push_back(curr + polyCountXPitch);
|
|
buffer->Indices.push_back(curr);
|
|
buffer->Indices.push_back(curr + 1);
|
|
buffer->Indices.push_back(curr + polyCountXPitch);
|
|
buffer->Indices.push_back(curr+1);
|
|
buffer->Indices.push_back(curr + 1 + polyCountXPitch);
|
|
}
|
|
|
|
// the connectors from front to end
|
|
buffer->Indices.push_back(level + polyCountX - 1 + polyCountXPitch);
|
|
buffer->Indices.push_back(level + polyCountX - 1);
|
|
buffer->Indices.push_back(level + polyCountX);
|
|
|
|
buffer->Indices.push_back(level + polyCountX - 1 + polyCountXPitch);
|
|
buffer->Indices.push_back(level + polyCountX);
|
|
buffer->Indices.push_back(level + polyCountX + polyCountXPitch);
|
|
level += polyCountXPitch;
|
|
}
|
|
|
|
const u32 polyCountSq = polyCountXPitch * polyCountY; // top point
|
|
const u32 polyCountSq1 = polyCountSq + 1; // bottom point
|
|
const u32 polyCountSqM1 = (polyCountY - 1) * polyCountXPitch; // last row's first vertex
|
|
|
|
for (u32 p2 = 0; p2 < polyCountX - 1; ++p2)
|
|
{
|
|
// create triangles which are at the top of the sphere
|
|
|
|
buffer->Indices.push_back(polyCountSq);
|
|
buffer->Indices.push_back(p2 + 1);
|
|
buffer->Indices.push_back(p2);
|
|
|
|
// create triangles which are at the bottom of the sphere
|
|
|
|
buffer->Indices.push_back(polyCountSqM1 + p2);
|
|
buffer->Indices.push_back(polyCountSqM1 + p2 + 1);
|
|
buffer->Indices.push_back(polyCountSq1);
|
|
}
|
|
|
|
// create final triangle which is at the top of the sphere
|
|
|
|
buffer->Indices.push_back(polyCountSq);
|
|
buffer->Indices.push_back(polyCountX);
|
|
buffer->Indices.push_back(polyCountX-1);
|
|
|
|
// create final triangle which is at the bottom of the sphere
|
|
|
|
buffer->Indices.push_back(polyCountSqM1 + polyCountX - 1);
|
|
buffer->Indices.push_back(polyCountSqM1);
|
|
buffer->Indices.push_back(polyCountSq1);
|
|
|
|
// calculate the angle which separates all points in a circle
|
|
const f64 AngleX = 2 * core::PI / polyCountX;
|
|
const f64 AngleY = core::PI / polyCountY;
|
|
|
|
u32 i=0;
|
|
f64 axz;
|
|
|
|
// we don't start at 0.
|
|
|
|
f64 ay = 0;//AngleY / 2;
|
|
|
|
buffer->Vertices.set_used((polyCountXPitch * polyCountY) + 2);
|
|
for (u32 y = 0; y < polyCountY; ++y)
|
|
{
|
|
ay += AngleY;
|
|
const f64 sinay = sin(ay);
|
|
axz = 0;
|
|
|
|
// calculate the necessary vertices without the doubled one
|
|
for (u32 xz = 0;xz < polyCountX; ++xz)
|
|
{
|
|
// calculate points position
|
|
|
|
const core::vector3df pos(static_cast<f32>(radius * cos(axz) * sinay),
|
|
static_cast<f32>(radius * cos(ay)),
|
|
static_cast<f32>(radius * sin(axz) * sinay));
|
|
// for spheres the normal is the position
|
|
core::vector3df normal(pos);
|
|
normal.normalize();
|
|
|
|
// calculate texture coordinates via sphere mapping
|
|
// tu is the same on each level, so only calculate once
|
|
f32 tu = 0.5f;
|
|
if (y==0)
|
|
{
|
|
if (normal.Y != -1.0f && normal.Y != 1.0f)
|
|
tu = static_cast<f32>(acos(core::clamp(normal.X/sinay, -1.0, 1.0)) * 0.5 *core::RECIPROCAL_PI64);
|
|
if (normal.Z < 0.0f)
|
|
tu=1-tu;
|
|
}
|
|
else
|
|
tu = buffer->Vertices[i-polyCountXPitch].TCoords.X;
|
|
buffer->Vertices[i] = video::S3DVertex(pos.X, pos.Y, pos.Z,
|
|
normal.X, normal.Y, normal.Z,
|
|
clr, tu,
|
|
static_cast<f32>(ay*core::RECIPROCAL_PI64));
|
|
++i;
|
|
axz += AngleX;
|
|
}
|
|
// This is the doubled vertex on the initial position
|
|
buffer->Vertices[i] = video::S3DVertex(buffer->Vertices[i-polyCountX]);
|
|
buffer->Vertices[i].TCoords.X=1.0f;
|
|
++i;
|
|
}
|
|
|
|
// the vertex at the top of the sphere
|
|
buffer->Vertices[i] = video::S3DVertex(0.0f,radius,0.0f, 0.0f,1.0f,0.0f, clr, 0.5f, 0.0f);
|
|
|
|
// the vertex at the bottom of the sphere
|
|
++i;
|
|
buffer->Vertices[i] = video::S3DVertex(0.0f,-radius,0.0f, 0.0f,-1.0f,0.0f, clr, 0.5f, 1.0f);
|
|
|
|
// recalculate bounding box
|
|
|
|
buffer->BoundingBox.reset(buffer->Vertices[i].Pos);
|
|
buffer->BoundingBox.addInternalPoint(buffer->Vertices[i-1].Pos);
|
|
buffer->BoundingBox.addInternalPoint(radius,0.0f,0.0f);
|
|
buffer->BoundingBox.addInternalPoint(-radius,0.0f,0.0f);
|
|
buffer->BoundingBox.addInternalPoint(0.0f,0.0f,radius);
|
|
buffer->BoundingBox.addInternalPoint(0.0f,0.0f,-radius);
|
|
|
|
SMesh* mesh = new SMesh();
|
|
mesh->addMeshBuffer(buffer);
|
|
buffer->drop();
|
|
|
|
mesh->setHardwareMappingHint(EHM_STATIC);
|
|
mesh->recalculateBoundingBox();
|
|
return mesh;
|
|
}
|
|
|
|
|
|
/* A cylinder with proper normals and texture coords */
|
|
IMesh* CGeometryCreator::createCylinderMesh(f32 radius, f32 length,
|
|
u32 tesselation, const video::SColor& color,
|
|
bool closeTop, f32 oblique, u32 normalType) const
|
|
{
|
|
SMeshBuffer* buffer = new SMeshBuffer();
|
|
|
|
const f32 recTesselation = core::reciprocal((f32)tesselation);
|
|
const f32 recTesselationHalf = recTesselation * 0.5f;
|
|
const f32 angleStep = (core::PI * 2.f ) * recTesselation;
|
|
const f32 angleStepHalf = angleStep*0.5f;
|
|
|
|
u32 i;
|
|
video::S3DVertex v;
|
|
v.Color = color;
|
|
buffer->Vertices.reallocate(tesselation*4+4+(closeTop?2:1));
|
|
buffer->Indices.reallocate((tesselation*2+1)*(closeTop?12:9));
|
|
f32 tcx = 0.f;
|
|
for ( i = 0; i <= tesselation; ++i )
|
|
{
|
|
const f32 angle = angleStep * i;
|
|
v.Pos.X = radius * cosf(angle);
|
|
v.Pos.Y = 0.f;
|
|
v.Pos.Z = radius * sinf(angle);
|
|
switch (normalType)
|
|
{
|
|
case 0: v.Normal = v.Pos; break;
|
|
case 1: v.Normal = v.Pos; break;
|
|
}
|
|
v.Normal.normalize();
|
|
v.TCoords.X=tcx;
|
|
v.TCoords.Y=0.f;
|
|
buffer->Vertices.push_back(v);
|
|
|
|
v.Pos.X += oblique;
|
|
v.Pos.Y = length;
|
|
switch (normalType)
|
|
{
|
|
case 0: v.Normal = v.Pos; break;
|
|
case 1: v.Normal = core::vector3df(v.Pos.X-oblique, 0, v.Pos.Z); break;
|
|
}
|
|
v.Normal.normalize();
|
|
v.TCoords.Y=1.f;
|
|
buffer->Vertices.push_back(v);
|
|
|
|
v.Pos.X = radius * cosf(angle + angleStepHalf);
|
|
v.Pos.Y = 0.f;
|
|
v.Pos.Z = radius * sinf(angle + angleStepHalf);
|
|
switch (normalType)
|
|
{
|
|
case 0: v.Normal = v.Pos; break;
|
|
case 1: v.Normal = v.Pos; break;
|
|
}
|
|
v.Normal.normalize();
|
|
v.TCoords.X=tcx+recTesselationHalf;
|
|
v.TCoords.Y=0.f;
|
|
buffer->Vertices.push_back(v);
|
|
|
|
v.Pos.X += oblique;
|
|
v.Pos.Y = length;
|
|
switch (normalType)
|
|
{
|
|
case 0: v.Normal = v.Pos; break;
|
|
case 1: v.Normal = core::vector3df(v.Pos.X-oblique, 0, v.Pos.Z); break;
|
|
}
|
|
v.Normal.normalize();
|
|
v.TCoords.Y=1.f;
|
|
buffer->Vertices.push_back(v);
|
|
tcx += recTesselation;
|
|
}
|
|
|
|
// indices for the main hull part
|
|
const u32 nonWrappedSize = tesselation* 4;
|
|
for (i=0; i != nonWrappedSize; i += 2)
|
|
{
|
|
buffer->Indices.push_back(i + 2);
|
|
buffer->Indices.push_back(i + 0);
|
|
buffer->Indices.push_back(i + 1);
|
|
|
|
buffer->Indices.push_back(i + 2);
|
|
buffer->Indices.push_back(i + 1);
|
|
buffer->Indices.push_back(i + 3);
|
|
}
|
|
|
|
// two closing quads between end and start
|
|
buffer->Indices.push_back(0);
|
|
buffer->Indices.push_back(i + 0);
|
|
buffer->Indices.push_back(i + 1);
|
|
|
|
buffer->Indices.push_back(0);
|
|
buffer->Indices.push_back(i + 1);
|
|
buffer->Indices.push_back(1);
|
|
|
|
// close down
|
|
v.Pos.X = 0.f;
|
|
v.Pos.Y = 0.f;
|
|
v.Pos.Z = 0.f;
|
|
v.Normal.X = 0.f;
|
|
v.Normal.Y = -1.f;
|
|
v.Normal.Z = 0.f;
|
|
v.TCoords.X = 1.f;
|
|
v.TCoords.Y = 1.f;
|
|
buffer->Vertices.push_back(v);
|
|
|
|
u32 index = buffer->Vertices.size() - 1;
|
|
|
|
for ( i = 0; i != nonWrappedSize; i += 2 )
|
|
{
|
|
buffer->Indices.push_back(index);
|
|
buffer->Indices.push_back(i + 0);
|
|
buffer->Indices.push_back(i + 2);
|
|
}
|
|
|
|
buffer->Indices.push_back(index);
|
|
buffer->Indices.push_back(i + 0);
|
|
buffer->Indices.push_back(0);
|
|
|
|
if (closeTop)
|
|
{
|
|
// close top
|
|
v.Pos.X = oblique;
|
|
v.Pos.Y = length;
|
|
v.Pos.Z = 0.f;
|
|
v.Normal.X = 0.f;
|
|
v.Normal.Y = 1.f;
|
|
v.Normal.Z = 0.f;
|
|
v.TCoords.X = 0.f;
|
|
v.TCoords.Y = 0.f;
|
|
buffer->Vertices.push_back(v);
|
|
|
|
index = buffer->Vertices.size() - 1;
|
|
|
|
for ( i = 0; i != nonWrappedSize; i += 2 )
|
|
{
|
|
buffer->Indices.push_back(i + 1);
|
|
buffer->Indices.push_back(index);
|
|
buffer->Indices.push_back(i + 3);
|
|
}
|
|
|
|
buffer->Indices.push_back(i + 1);
|
|
buffer->Indices.push_back(index);
|
|
buffer->Indices.push_back(1);
|
|
}
|
|
|
|
buffer->recalculateBoundingBox();
|
|
SMesh* mesh = new SMesh();
|
|
mesh->addMeshBuffer(buffer);
|
|
mesh->setHardwareMappingHint(EHM_STATIC);
|
|
mesh->recalculateBoundingBox();
|
|
buffer->drop();
|
|
return mesh;
|
|
}
|
|
|
|
|
|
/* A cone with proper normals and texture coords */
|
|
IMesh* CGeometryCreator::createConeMesh(f32 radius, f32 length, u32 tesselation,
|
|
const video::SColor& colorTop,
|
|
const video::SColor& colorBottom,
|
|
f32 oblique) const
|
|
{
|
|
SMeshBuffer* buffer = new SMeshBuffer();
|
|
|
|
const f32 angleStep = (core::PI * 2.f ) / tesselation;
|
|
const f32 angleStepHalf = angleStep*0.5f;
|
|
|
|
video::S3DVertex v;
|
|
u32 i;
|
|
|
|
v.Color = colorTop;
|
|
for ( i = 0; i != tesselation; ++i )
|
|
{
|
|
f32 angle = angleStep * f32(i);
|
|
|
|
v.Pos.X = radius * cosf(angle);
|
|
v.Pos.Y = 0.f;
|
|
v.Pos.Z = radius * sinf(angle);
|
|
v.Normal = v.Pos;
|
|
v.Normal.normalize();
|
|
buffer->Vertices.push_back(v);
|
|
|
|
angle += angleStepHalf;
|
|
v.Pos.X = radius * cosf(angle);
|
|
v.Pos.Y = 0.f;
|
|
v.Pos.Z = radius * sinf(angle);
|
|
v.Normal = v.Pos;
|
|
v.Normal.normalize();
|
|
buffer->Vertices.push_back(v);
|
|
}
|
|
const u32 nonWrappedSize = buffer->Vertices.size() - 1;
|
|
|
|
// close top
|
|
v.Pos.X = oblique;
|
|
v.Pos.Y = length;
|
|
v.Pos.Z = 0.f;
|
|
v.Normal.X = 0.f;
|
|
v.Normal.Y = 1.f;
|
|
v.Normal.Z = 0.f;
|
|
buffer->Vertices.push_back(v);
|
|
|
|
u32 index = buffer->Vertices.size() - 1;
|
|
|
|
for ( i = 0; i != nonWrappedSize; i += 1 )
|
|
{
|
|
buffer->Indices.push_back(i + 0);
|
|
buffer->Indices.push_back(index);
|
|
buffer->Indices.push_back(i + 1);
|
|
}
|
|
|
|
buffer->Indices.push_back(i + 0);
|
|
buffer->Indices.push_back(index);
|
|
buffer->Indices.push_back(0);
|
|
|
|
// close down
|
|
v.Color = colorBottom;
|
|
v.Pos.X = 0.f;
|
|
v.Pos.Y = 0.f;
|
|
v.Pos.Z = 0.f;
|
|
v.Normal.X = 0.f;
|
|
v.Normal.Y = -1.f;
|
|
v.Normal.Z = 0.f;
|
|
buffer->Vertices.push_back(v);
|
|
|
|
index = buffer->Vertices.size() - 1;
|
|
|
|
for ( i = 0; i != nonWrappedSize; i += 1 )
|
|
{
|
|
buffer->Indices.push_back(index);
|
|
buffer->Indices.push_back(i + 0);
|
|
buffer->Indices.push_back(i + 1);
|
|
}
|
|
|
|
buffer->Indices.push_back(index);
|
|
buffer->Indices.push_back(i + 0);
|
|
buffer->Indices.push_back(0);
|
|
|
|
buffer->recalculateBoundingBox();
|
|
SMesh* mesh = new SMesh();
|
|
mesh->addMeshBuffer(buffer);
|
|
buffer->drop();
|
|
|
|
mesh->setHardwareMappingHint(EHM_STATIC);
|
|
mesh->recalculateBoundingBox();
|
|
return mesh;
|
|
}
|
|
|
|
|
|
void CGeometryCreator::addToBuffer(const video::S3DVertex& v, SMeshBuffer* Buffer) const
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{
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const s32 tnidx = Buffer->Vertices.linear_reverse_search(v);
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const bool alreadyIn = (tnidx != -1);
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u16 nidx = (u16)tnidx;
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if (!alreadyIn)
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{
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nidx = (u16)Buffer->Vertices.size();
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Buffer->Indices.push_back(nidx);
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Buffer->Vertices.push_back(v);
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}
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else
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Buffer->Indices.push_back(nidx);
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}
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IMesh* CGeometryCreator::createVolumeLightMesh(
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const u32 subdivideU, const u32 subdivideV,
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const video::SColor footColor, const video::SColor tailColor,
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const f32 lpDistance, const core::vector3df& lightDim) const
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{
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SMeshBuffer* Buffer = new SMeshBuffer();
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Buffer->setHardwareMappingHint(EHM_STATIC);
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const core::vector3df lightPoint(0, -(lpDistance*lightDim.Y), 0);
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const f32 ax = lightDim.X * 0.5f; // X Axis
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const f32 az = lightDim.Z * 0.5f; // Z Axis
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Buffer->Vertices.clear();
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Buffer->Vertices.reallocate(6+12*(subdivideU+subdivideV));
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Buffer->Indices.clear();
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Buffer->Indices.reallocate(6+12*(subdivideU+subdivideV));
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//draw the bottom foot.. the glowing region
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addToBuffer(video::S3DVertex(-ax, 0, az, 0,0,0, footColor, 0, 1),Buffer);
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addToBuffer(video::S3DVertex( ax, 0, az, 0,0,0, footColor, 1, 1),Buffer);
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addToBuffer(video::S3DVertex( ax, 0,-az, 0,0,0, footColor, 1, 0),Buffer);
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addToBuffer(video::S3DVertex( ax, 0,-az, 0,0,0, footColor, 1, 0),Buffer);
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addToBuffer(video::S3DVertex(-ax, 0,-az, 0,0,0, footColor, 0, 0),Buffer);
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addToBuffer(video::S3DVertex(-ax, 0, az, 0,0,0, footColor, 0, 1),Buffer);
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f32 tu = 0.f;
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const f32 tuStep = 1.f/subdivideU;
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f32 bx = -ax;
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const f32 bxStep = lightDim.X * tuStep;
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// Slices in X/U space
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for (u32 i = 0; i <= subdivideU; ++i)
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{
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// These are the two endpoints for a slice at the foot
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core::vector3df end1(bx, 0.0f, -az);
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core::vector3df end2(bx, 0.0f, az);
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end1 -= lightPoint; // get a vector from point to lightsource
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end1.normalize(); // normalize vector
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end1 *= lightDim.Y; // multiply it out by shootlength
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end1.X += bx; // Add the original point location to the vector
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end1.Z -= az;
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// Do it again for the other point.
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end2 -= lightPoint;
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end2.normalize();
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end2 *= lightDim.Y;
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end2.X += bx;
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end2.Z += az;
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addToBuffer(video::S3DVertex(bx , 0, az, 0,0,0, footColor, tu, 1),Buffer);
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addToBuffer(video::S3DVertex(bx , 0, -az, 0,0,0, footColor, tu, 0),Buffer);
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addToBuffer(video::S3DVertex(end2.X , end2.Y, end2.Z, 0,0,0, tailColor, tu, 1),Buffer);
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addToBuffer(video::S3DVertex(bx , 0, -az, 0,0,0, footColor, tu, 0),Buffer);
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addToBuffer(video::S3DVertex(end1.X , end1.Y, end1.Z, 0,0,0, tailColor, tu, 0),Buffer);
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addToBuffer(video::S3DVertex(end2.X , end2.Y, end2.Z, 0,0,0, tailColor, tu, 1),Buffer);
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//back side
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addToBuffer(video::S3DVertex(-end2.X , end2.Y, -end2.Z, 0,0,0, tailColor, tu, 1),Buffer);
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addToBuffer(video::S3DVertex(-bx , 0, -az, 0,0,0, footColor, tu, 1),Buffer);
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addToBuffer(video::S3DVertex(-bx , 0, az, 0,0,0, footColor, tu, 0),Buffer);
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|
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addToBuffer(video::S3DVertex(-bx , 0, az, 0,0,0, footColor, tu, 0),Buffer);
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addToBuffer(video::S3DVertex(-end1.X , end1.Y, -end1.Z, 0,0,0, tailColor, tu, 0),Buffer);
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|
addToBuffer(video::S3DVertex(-end2.X , end2.Y, -end2.Z, 0,0,0, tailColor, tu, 1),Buffer);
|
|
tu += tuStep;
|
|
bx += bxStep;
|
|
}
|
|
|
|
f32 tv = 0.f;
|
|
const f32 tvStep = 1.f/subdivideV;
|
|
f32 bz = -az;
|
|
const f32 bzStep = lightDim.Z * tvStep;
|
|
// Slices in Z/V space
|
|
for(u32 i = 0; i <= subdivideV; ++i)
|
|
{
|
|
// These are the two endpoints for a slice at the foot
|
|
core::vector3df end1(-ax, 0.0f, bz);
|
|
core::vector3df end2(ax, 0.0f, bz);
|
|
|
|
end1 -= lightPoint; // get a vector from point to lightsource
|
|
end1.normalize(); // normalize vector
|
|
end1 *= lightDim.Y; // multiply it out by shootlength
|
|
|
|
end1.X -= ax; // Add the original point location to the vector
|
|
end1.Z += bz;
|
|
|
|
// Do it again for the other point.
|
|
end2 -= lightPoint;
|
|
end2.normalize();
|
|
end2 *= lightDim.Y;
|
|
|
|
end2.X += ax;
|
|
end2.Z += bz;
|
|
|
|
addToBuffer(video::S3DVertex(-ax , 0, bz, 0,0,0, footColor, 0, tv),Buffer);
|
|
addToBuffer(video::S3DVertex(ax , 0, bz, 0,0,0, footColor, 1, tv),Buffer);
|
|
addToBuffer(video::S3DVertex(end2.X , end2.Y, end2.Z, 0,0,0, tailColor, 1, tv),Buffer);
|
|
|
|
addToBuffer(video::S3DVertex(end2.X , end2.Y, end2.Z, 0,0,0, tailColor, 1, tv),Buffer);
|
|
addToBuffer(video::S3DVertex(end1.X , end1.Y, end1.Z, 0,0,0, tailColor, 0, tv),Buffer);
|
|
addToBuffer(video::S3DVertex(-ax , 0, bz, 0,0,0, footColor, 0, tv),Buffer);
|
|
|
|
//back side
|
|
addToBuffer(video::S3DVertex(ax , 0, -bz, 0,0,0, footColor, 0, tv),Buffer);
|
|
addToBuffer(video::S3DVertex(-ax , 0, -bz, 0,0,0, footColor, 1, tv),Buffer);
|
|
addToBuffer(video::S3DVertex(-end2.X , end2.Y, -end2.Z, 0,0,0, tailColor, 1, tv),Buffer);
|
|
|
|
addToBuffer(video::S3DVertex(-end2.X , end2.Y, -end2.Z, 0,0,0, tailColor, 1, tv),Buffer);
|
|
addToBuffer(video::S3DVertex(-end1.X , end1.Y, -end1.Z, 0,0,0, tailColor, 0, tv),Buffer);
|
|
addToBuffer(video::S3DVertex(ax , 0, -bz, 0,0,0, footColor, 0, tv),Buffer);
|
|
tv += tvStep;
|
|
bz += bzStep;
|
|
}
|
|
|
|
Buffer->recalculateBoundingBox();
|
|
|
|
Buffer->Material.MaterialType = video::EMT_ONETEXTURE_BLEND;
|
|
Buffer->Material.MaterialTypeParam = pack_textureBlendFunc( video::EBF_SRC_COLOR, video::EBF_SRC_ALPHA, video::EMFN_MODULATE_1X );
|
|
|
|
Buffer->Material.Lighting = false;
|
|
Buffer->Material.ZWriteEnable = video::EZW_OFF;
|
|
|
|
Buffer->setDirty(EBT_VERTEX_AND_INDEX);
|
|
|
|
Buffer->recalculateBoundingBox();
|
|
SMesh* mesh = new SMesh();
|
|
mesh->addMeshBuffer(Buffer);
|
|
Buffer->drop();
|
|
|
|
mesh->recalculateBoundingBox();
|
|
return mesh;
|
|
}
|
|
|
|
|
|
} // end namespace scene
|
|
} // end namespace irr
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|