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118 lines
3.8 KiB
C++
118 lines
3.8 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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#pragma once
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#include "IBillboardSceneNode.h"
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#include "SMeshBuffer.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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//! Scene node which is a billboard. A billboard is like a 3d sprite: A 2d element,
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//! which always looks to the camera.
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class CBillboardSceneNode : virtual public IBillboardSceneNode
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{
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public:
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//! constructor
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CBillboardSceneNode(ISceneNode* parent, ISceneManager* mgr, s32 id,
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const core::vector3df& position, const core::dimension2d<f32>& size,
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video::SColor colorTop=video::SColor(0xFFFFFFFF),
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video::SColor colorBottom=video::SColor(0xFFFFFFFF));
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virtual ~CBillboardSceneNode();
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//! pre render event
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void OnRegisterSceneNode() override;
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//! render
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void render() override;
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//! returns the axis aligned bounding box of this node
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const core::aabbox3d<f32>& getBoundingBox() const override;
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//! sets the size of the billboard
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void setSize(const core::dimension2d<f32>& size) override;
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//! Sets the widths of the top and bottom edges of the billboard independently.
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void setSize(f32 height, f32 bottomEdgeWidth, f32 topEdgeWidth) override;
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//! gets the size of the billboard
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const core::dimension2d<f32>& getSize() const override;
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//! Gets the widths of the top and bottom edges of the billboard.
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void getSize(f32& height, f32& bottomEdgeWidth, f32& topEdgeWidth) const override;
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video::SMaterial& getMaterial(u32 i) override;
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//! returns amount of materials used by this scene node.
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u32 getMaterialCount() const override;
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//! Set the color of all vertices of the billboard
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//! \param overallColor: the color to set
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void setColor(const video::SColor& overallColor) override;
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//! Set the color of the top and bottom vertices of the billboard
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//! \param topColor: the color to set the top vertices
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//! \param bottomColor: the color to set the bottom vertices
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virtual void setColor(const video::SColor& topColor,
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const video::SColor& bottomColor) override;
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//! Gets the color of the top and bottom vertices of the billboard
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//! \param[out] topColor: stores the color of the top vertices
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//! \param[out] bottomColor: stores the color of the bottom vertices
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virtual void getColor(video::SColor& topColor,
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video::SColor& bottomColor) const override;
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//! Get the real boundingbox used by the billboard (which depends on the active camera)
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const core::aabbox3d<f32>& getTransformedBillboardBoundingBox(const irr::scene::ICameraSceneNode* camera) override;
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//! Get the amount of mesh buffers.
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u32 getMeshBufferCount() const override
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{
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return Buffer ? 1 : 0;
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}
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//! Get pointer to the mesh buffer.
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IMeshBuffer* getMeshBuffer(u32 nr) const override
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{
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if ( nr == 0 )
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return Buffer;
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return 0;
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}
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//! Returns type of the scene node
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ESCENE_NODE_TYPE getType() const override { return ESNT_BILLBOARD; }
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//! Creates a clone of this scene node and its children.
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ISceneNode* clone(ISceneNode* newParent=0, ISceneManager* newManager=0) override;
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protected:
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void updateMesh(const irr::scene::ICameraSceneNode* camera);
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private:
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//! Size.Width is the bottom edge width
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core::dimension2d<f32> Size;
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f32 TopEdgeWidth;
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//! BoundingBox which is large enough to contain the billboard independent of the camera
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// TODO: BUG - still can be wrong with scaling < 1. Billboards should calculate relative coordinates for their mesh
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// and then use the node-scaling. But needs some work...
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/** Note that we can't use the real boundingbox for culling because at that point
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the camera which is used to calculate the billboard is not yet updated. So we only
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know the real boundingbox after rendering - which is too late for culling. */
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core::aabbox3d<f32> BBoxSafe;
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scene::SMeshBuffer* Buffer;
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};
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} // end namespace scene
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} // end namespace irr
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