/// <summary>
/// 为材料平铺和采样矩形和UV平铺分配初始值
/// </summary>
/// <param name="allTexturesUseSameMatTiling"></param>
/// <param name="matTiling"></param>
public void AssignInitialValuesForMaterialTilingAndSamplingRectMatAndUVTiling(bool allTexturesUseSameMatTiling, DRect matTiling)
{
if (allTexturesUseSameMatTiling)
{
materialTiling = matTiling;
}
else
{
materialTiling = new DRect(0f, 0f, 1f, 1f);
}
DRect tmpMatTiling = materialTiling;
DRect obUVrect = obUVRectIfTilingSame;
samplingRectMatAndUVTiling = UVRectUtility.CombineTransforms(ref obUVrect, ref tmpMatTiling);
}
public static Rect BuildTransformMeshUV2AtlasRect(
bool considerMeshUVs,
Rect _atlasRect,
Rect _obUVRect,
Rect _sourceMaterialTiling,
Rect _encapsulatingRect)
{
DRect atlasRect = new DRect(_atlasRect);
DRect obUVRect;
if (considerMeshUVs)
{
obUVRect = new DRect(_obUVRect); //this is the uvRect in src mesh
}
else
{
obUVRect = new DRect(0.0, 0.0, 1.0, 1.0);
}
DRect sourceMaterialTiling = new DRect(_sourceMaterialTiling);
//封装材质， UV 参数
DRect encapsulatingRectMatAndUVTiling = new DRect(_encapsulatingRect);
DRect encapsulatingRectMatAndUVTilingInverse = UVRectUtility.InverseTransform(ref encapsulatingRectMatAndUVTiling);
DRect toNormalizedUVs = UVRectUtility.InverseTransform(ref obUVRect);
DRect meshFullSamplingRect = UVRectUtility.CombineTransforms(ref obUVRect, ref sourceMaterialTiling);
DRect shiftToFitInEncapsulating = UVRectUtility.GetShiftTransformToFitBinA(ref encapsulatingRectMatAndUVTiling, ref meshFullSamplingRect);
meshFullSamplingRect = UVRectUtility.CombineTransforms(ref meshFullSamplingRect, ref shiftToFitInEncapsulating);
//transform between full sample rect and encapsulating rect
DRect relativeTrans = UVRectUtility.CombineTransforms(ref meshFullSamplingRect, ref encapsulatingRectMatAndUVTilingInverse);
DRect trans = UVRectUtility.CombineTransforms(ref toNormalizedUVs, ref relativeTrans);
trans = UVRectUtility.CombineTransforms(ref trans, ref atlasRect);
Rect rr = trans.GetRect();
return(rr);
}
//assumes all materials use the same obUVrects.
//假设所有材料都使用相同的obUVrects。
internal void CalcInitialFullSamplingRects(bool fixOutOfBoundsUVs)
{
DRect validFullSamplingRect = new DRect(0, 0, 1, 1);
if (fixOutOfBoundsUVs)
{
validFullSamplingRect = obUVrect;
}
for (int propIdx = 0; propIdx < ts.Length; propIdx++)
{
if (!ts[propIdx].isNull)
{
DRect matTiling = ts[propIdx].matTilingRect;
DRect ruv;
if (fixOutOfBoundsUVs)
{
ruv = obUVrect;
}
else
{
ruv = new DRect(0.0, 0.0, 1.0, 1.0);
}
ts[propIdx].SetEncapsulatingSamplingRect(this, UVRectUtility.CombineTransforms(ref ruv, ref matTiling));
validFullSamplingRect = ts[propIdx].GetEncapsulatingSamplingRect();
}
}
//if some of the textures were null make them match the sampling of one of the other textures
for (int propIdx = 0; propIdx < ts.Length; propIdx++)
{
if (ts[propIdx].isNull)
{
ts[propIdx].SetEncapsulatingSamplingRect(this, validFullSamplingRect);
}
}
}