Add texture UV coordinate calculation to ModelDefinition

This commit is contained in:
UniquePassive
2017-03-24 19:36:31 +01:00
parent 28ff8e3366
commit 2c44b43859

View File

@@ -27,6 +27,8 @@ public class ModelDefinition
public short[] textureTriangleVertexIndices1;
public short[] textureTriangleVertexIndices2;
public short[] textureTriangleVertexIndices3;
public float[][] faceTextureUCoordinates;
public float[][] faceTextureVCoordinates;
public short[] texturePrimaryColors;
public short[] faceTextures;
public byte[] textureCoordinates;
@@ -150,4 +152,118 @@ public class ModelDefinition
}
}
/**
* Computes the UV coordinates for every three-vertex face that has a texture.
*/
public void computeTextureUVCoordinates() {
this.faceTextureUCoordinates = new float[faceCount][];
this.faceTextureVCoordinates = new float[faceCount][];
for (int i = 0; i < faceCount; i++) {
int textureCoordinate;
if (textureCoordinates == null) {
textureCoordinate = -1;
} else {
textureCoordinate = textureCoordinates[i];
}
int textureIdx;
if (faceTextures == null) {
textureIdx = -1;
} else {
textureIdx = faceTextures[i] & 0xFFFF;
}
if (textureIdx != -1) {
float[] u = new float[3];
float[] v = new float[3];
if (textureCoordinate == -1) {
u[0] = 0.0F;
v[0] = 1.0F;
u[1] = 1.0F;
v[1] = 1.0F;
u[2] = 0.0F;
v[2] = 0.0F;
} else {
textureCoordinate &= 0xFF;
byte textureRenderType = 0;
if (textureRenderTypes != null) {
textureRenderType = textureRenderTypes[textureCoordinate];
}
if (textureRenderType == 0) {
int faceVertexIdx1 = faceVertexIndices1[i];
int faceVertexIdx2 = faceVertexIndices2[i];
int faceVertexIdx3 = faceVertexIndices3[i];
short triangleVertexIdx1 = textureTriangleVertexIndices1[textureCoordinate];
short triangleVertexIdx2 = textureTriangleVertexIndices2[textureCoordinate];
short triangleVertexIdx3 = textureTriangleVertexIndices3[textureCoordinate];
float triangleX = (float) vertexPositionsX[triangleVertexIdx1];
float triangleY = (float) vertexPositionsY[triangleVertexIdx1];
float triangleZ = (float) vertexPositionsZ[triangleVertexIdx1];
float f_882_ = (float) vertexPositionsX[triangleVertexIdx2] - triangleX;
float f_883_ = (float) vertexPositionsY[triangleVertexIdx2] - triangleY;
float f_884_ = (float) vertexPositionsZ[triangleVertexIdx2] - triangleZ;
float f_885_ = (float) vertexPositionsX[triangleVertexIdx3] - triangleX;
float f_886_ = (float) vertexPositionsY[triangleVertexIdx3] - triangleY;
float f_887_ = (float) vertexPositionsZ[triangleVertexIdx3] - triangleZ;
float f_888_ = (float) vertexPositionsX[faceVertexIdx1] - triangleX;
float f_889_ = (float) vertexPositionsY[faceVertexIdx1] - triangleY;
float f_890_ = (float) vertexPositionsZ[faceVertexIdx1] - triangleZ;
float f_891_ = (float) vertexPositionsX[faceVertexIdx2] - triangleX;
float f_892_ = (float) vertexPositionsY[faceVertexIdx2] - triangleY;
float f_893_ = (float) vertexPositionsZ[faceVertexIdx2] - triangleZ;
float f_894_ = (float) vertexPositionsX[faceVertexIdx3] - triangleX;
float f_895_ = (float) vertexPositionsY[faceVertexIdx3] - triangleY;
float f_896_ = (float) vertexPositionsZ[faceVertexIdx3] - triangleZ;
float f_897_ = f_883_ * f_887_ - f_884_ * f_886_;
float f_898_ = f_884_ * f_885_ - f_882_ * f_887_;
float f_899_ = f_882_ * f_886_ - f_883_ * f_885_;
float f_900_ = f_886_ * f_899_ - f_887_ * f_898_;
float f_901_ = f_887_ * f_897_ - f_885_ * f_899_;
float f_902_ = f_885_ * f_898_ - f_886_ * f_897_;
float f_903_ = 1.0F / (f_900_ * f_882_ + f_901_
* f_883_ + f_902_ * f_884_);
u[0] = (f_900_ * f_888_ + f_901_ * f_889_ + f_902_
* f_890_)
* f_903_;
u[1] = (f_900_ * f_891_ + f_901_ * f_892_ + f_902_
* f_893_)
* f_903_;
u[2] = (f_900_ * f_894_ + f_901_ * f_895_ + f_902_
* f_896_)
* f_903_;
f_900_ = f_883_ * f_899_ - f_884_ * f_898_;
f_901_ = f_884_ * f_897_ - f_882_ * f_899_;
f_902_ = f_882_ * f_898_ - f_883_ * f_897_;
f_903_ = 1.0F / (f_900_ * f_885_ + f_901_ * f_886_ + f_902_
* f_887_);
v[0] = (f_900_ * f_888_ + f_901_ * f_889_ + f_902_
* f_890_)
* f_903_;
v[1] = (f_900_ * f_891_ + f_901_ * f_892_ + f_902_
* f_893_)
* f_903_;
v[2] = (f_900_ * f_894_ + f_901_ * f_895_ + f_902_
* f_896_)
* f_903_;
}
}
this.faceTextureUCoordinates[i] = u;
this.faceTextureVCoordinates[i] = v;
}
}
}
}