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Fix getScale()

Browse Source 
* Fix getScale()

* Create blender_cube_scaled.gltf

* Add scaling unit test

* Remove comment

* Undo github's silent reversion of 1,1,1
This commit is contained in:
jordan4ibanez 2023-12-01 20:48:05 -05:00 committed by Josiah VanderZee
parent f33b8a612d
commit 777ec9d130
4 changed files with 139 additions and 11 deletions
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20
source/Irrlicht/CGLTFMeshFileLoader.cpp
View File

@ -238,12 +238,12 @@ core::vector2df CGLTFMeshFileLoader::MeshExtractor::readVec2DF(
*/
core::vector3df CGLTFMeshFileLoader::MeshExtractor::readVec3DF(
const BufferOffset& readFrom,
const float scale = 1.0f)
const core::vector3df scale = {1.0f,1.0f,1.0f})
{
return core::vector3df(
scale * readPrimitive<float>(readFrom),
scale * readPrimitive<float>(BufferOffset(readFrom, sizeof(float))),
-scale * readPrimitive<float>(BufferOffset(readFrom, 2 *
scale.X * readPrimitive<float>(readFrom),
scale.Y * readPrimitive<float>(BufferOffset(readFrom, sizeof(float))),
-scale.Z * readPrimitive<float>(BufferOffset(readFrom, 2 *
sizeof(float))));
}
@ -311,13 +311,15 @@ void CGLTFMeshFileLoader::MeshExtractor::copyTCoords(
* Required: NO
* @returns: core::vector2df
*/
float CGLTFMeshFileLoader::MeshExtractor::getScale() const
core::vector3df CGLTFMeshFileLoader::MeshExtractor::getScale() const
{
if (m_model.nodes[0].scale.size() > 0) {
return static_cast<float>(m_model.nodes[0].scale[0]);
core::vector3df buffer{1.0f,1.0f,1.0f};
if (m_model.nodes[0].scale.size() == 3) {
buffer.X = static_cast<float>(m_model.nodes[0].scale[0]);
buffer.Y = static_cast<float>(m_model.nodes[0].scale[1]);
buffer.Z = static_cast<float>(m_model.nodes[0].scale[2]);
}
return 1.0f;
return buffer;
}
/**

4
source/Irrlicht/CGLTFMeshFileLoader.h
View File

@ -85,7 +85,7 @@ private:
*/
static core::vector3df readVec3DF(
const BufferOffset& readFrom,
const float scale);
const core::vector3df scale);
void copyPositions(const std::size_t accessorIdx,
std::vector<vertex_t>& vertices) const;
@ -100,7 +100,7 @@ private:
*
* Returns vec3(1.0, 1.0, 1.0) if no scale factor is present.
*/
float getScale() const;
core::vector3df getScale() const;
std::size_t getElemCount(const std::size_t accessorIdx) const;

105
source/Irrlicht/tests/assets/blender_cube_scaled.gltf Normal file
View File

@ -0,0 +1,105 @@
{
"asset" : {
"generator" : "Khronos glTF Blender I/O v1.7.33",
"version" : "2.0"
},
"scene" : 0,
"scenes" : [
{
"name" : "Scene",
"nodes" : [
0
]
}
],
"nodes" : [
{
"mesh" : 0,
"name" : "Cube",
"scale" : [
150,
1,
21.5
]
}
],
"meshes" : [
{
"name" : "Cube.004",
"primitives" : [
{
"attributes" : {
"POSITION" : 0,
"NORMAL" : 1,
"TEXCOORD_0" : 2
},
"indices" : 3
}
]
}
],
"accessors" : [
{
"bufferView" : 0,
"componentType" : 5126,
"count" : 24,
"max" : [
1,
1,
1
],
"min" : [
-1,
-1,
-1
],
"type" : "VEC3"
},
{
"bufferView" : 1,
"componentType" : 5126,
"count" : 24,
"type" : "VEC3"
},
{
"bufferView" : 2,
"componentType" : 5126,
"count" : 24,
"type" : "VEC2"
},
{
"bufferView" : 3,
"componentType" : 5123,
"count" : 36,
"type" : "SCALAR"
}
],
"bufferViews" : [
{
"buffer" : 0,
"byteLength" : 288,
"byteOffset" : 0
},
{
"buffer" : 0,
"byteLength" : 288,
"byteOffset" : 288
},
{
"buffer" : 0,
"byteLength" : 192,
"byteOffset" : 576
},
{
"buffer" : 0,
"byteLength" : 72,
"byteOffset" : 768
}
],
"buffers" : [
{
"byteLength" : 840,
"uri" : "data:application/octet-stream;base64,AACAvwAAgL8AAIA/AACAvwAAgL8AAIA/AACAvwAAgL8AAIA/AACAvwAAgD8AAIA/AACAvwAAgD8AAIA/AACAvwAAgD8AAIA/AACAvwAAgL8AAIC/AACAvwAAgL8AAIC/AACAvwAAgL8AAIC/AACAvwAAgD8AAIC/AACAvwAAgD8AAIC/AACAvwAAgD8AAIC/AACAPwAAgL8AAIA/AACAPwAAgL8AAIA/AACAPwAAgL8AAIA/AACAPwAAgD8AAIA/AACAPwAAgD8AAIA/AACAPwAAgD8AAIA/AACAPwAAgL8AAIC/AACAPwAAgL8AAIC/AACAPwAAgL8AAIC/AACAPwAAgD8AAIC/AACAPwAAgD8AAIC/AACAPwAAgD8AAIC/AACAvwAAAAAAAACAAAAAAAAAgL8AAACAAAAAAAAAAAAAAIA/AACAvwAAAAAAAACAAAAAAAAAAAAAAIA/AAAAAAAAgD8AAACAAACAvwAAAAAAAACAAAAAAAAAgL8AAACAAAAAAAAAAAAAAIC/AACAvwAAAAAAAACAAAAAAAAAAAAAAIC/AAAAAAAAgD8AAACAAAAAAAAAgL8AAACAAAAAAAAAAAAAAIA/AACAPwAAAAAAAACAAAAAAAAAAAAAAIA/AAAAAAAAgD8AAACAAACAPwAAAAAAAACAAAAAAAAAgL8AAACAAAAAAAAAAAAAAIC/AACAPwAAAAAAAACAAAAAAAAAAAAAAIC/AAAAAAAAgD8AAACAAACAPwAAAAAAAACAAADAPgAAgD8AAAA+AACAPgAAwD4AAAAAAAAgPwAAgD8AACA/AAAAAAAAYD8AAIA+AADAPgAAQD8AAAA+AAAAPwAAwD4AAEA/AAAgPwAAQD8AACA/AABAPwAAYD8AAAA/AADAPgAAgD4AAMA+AACAPgAAwD4AAIA+AAAgPwAAgD4AACA/AACAPgAAID8AAIA+AADAPgAAAD8AAMA+AAAAPwAAwD4AAAA/AAAgPwAAAD8AACA/AAAAPwAAID8AAAA/AAADAAkAAAAJAAYACAAKABUACAAVABMAFAAXABEAFAARAA4ADQAPAAQADQAEAAIABwASAAwABwAMAAEAFgALAAUAFgAFABAA"
}
]
}

21
source/Irrlicht/tests/testCGLTFMeshFileLoader.cpp
View File

@ -143,6 +143,27 @@ TEST_CASE("invalid JSON returns nullptr") {
CHECK(sm.getMesh() == nullptr);
}
TEST_CASE("blender cube scaled") {
ScopedMesh sm("source/Irrlicht/tests/assets/blender_cube_scaled.gltf");
REQUIRE(sm.getMesh() != nullptr);
REQUIRE(sm.getMesh()->getMeshBufferCount() == 1);
SECTION("Scaling is correct") {
REQUIRE(sm.getMesh()->getMeshBuffer(0)->getVertexCount() == 24);
const auto* vertices = reinterpret_cast<irr::video::S3DVertex*>(
sm.getMesh()->getMeshBuffer(0)->getVertices());
CHECK(vertices[0].Pos == irr::core::vector3df{-150.0f, -1.0f, -21.5f});
CHECK(vertices[3].Pos == irr::core::vector3df{-150.0f, 1.0f, -21.5f});
CHECK(vertices[6].Pos == irr::core::vector3df{-150.0f, -1.0f, 21.5f});
CHECK(vertices[9].Pos == irr::core::vector3df{-150.0f, 1.0f, 21.5f});
CHECK(vertices[12].Pos == irr::core::vector3df{150.0f, -1.0f, -21.5f});
CHECK(vertices[15].Pos == irr::core::vector3df{150.0f, 1.0f, -21.5f});
CHECK(vertices[18].Pos == irr::core::vector3df{150.0f, -1.0f, 21.5f});
CHECK(vertices[21].Pos == irr::core::vector3df{150.0f, 1.0f, 21.5f});
}
}
TEST_CASE("snow man") {
ScopedMesh sm("source/Irrlicht/tests/assets/snow_man.gltf");
REQUIRE(sm.getMesh() != nullptr);