/*
=======================================================================================================================
=======================================================================================================================
*/
void FaceToBrushPrimitFace(face_t *f) {
idVec3D texX, texY;
idVec3D proj;
// ST of (0,0) (1,0) (0,1)
idVec5 ST[3]; // [ point index ] [ xyz ST ]
//
// ++timo not used as long as brushprimit_texdef and texdef are static
// f->brushprimit_texdef.contents=f->texdef.contents;
// f->brushprimit_texdef.flags=f->texdef.flags;
// f->brushprimit_texdef.value=f->texdef.value;
// strcpy(f->brushprimit_texdef.name,f->texdef.name);
//
#ifdef _DEBUG
if (f->plane[0] == 0.0f && f->plane[1] == 0.0f && f->plane[2] == 0.0f) {
common->Printf("Warning : f->plane.normal is (0,0,0) in FaceToBrushPrimitFace\n");
}
// check d_texture
if (!f->d_texture) {
common->Printf("Warning : f.d_texture is NULL in FaceToBrushPrimitFace\n");
return;
}
#endif
// compute axis base
ComputeAxisBase(f->plane.Normal(), texX, texY);
// compute projection vector
VectorCopy( f->plane, proj );
VectorScale(proj, -f->plane[3], proj);
//
// (0,0) in plane axis base is (0,0,0) in world coordinates + projection on the
// affine plane (1,0) in plane axis base is texX in world coordinates + projection
// on the affine plane (0,1) in plane axis base is texY in world coordinates +
// projection on the affine plane use old texture code to compute the ST coords of
// these points
//
VectorCopy(proj, ST[0]);
EmitTextureCoordinates(ST[0], f->d_texture, f);
VectorCopy(texX, ST[1]);
VectorAdd(ST[1], proj, ST[1]);
EmitTextureCoordinates(ST[1], f->d_texture, f);
VectorCopy(texY, ST[2]);
VectorAdd(ST[2], proj, ST[2]);
EmitTextureCoordinates(ST[2], f->d_texture, f);
// compute texture matrix
f->brushprimit_texdef.coords[0][2] = ST[0][3];
f->brushprimit_texdef.coords[1][2] = ST[0][4];
f->brushprimit_texdef.coords[0][0] = ST[1][3] - f->brushprimit_texdef.coords[0][2];
f->brushprimit_texdef.coords[1][0] = ST[1][4] - f->brushprimit_texdef.coords[1][2];
f->brushprimit_texdef.coords[0][1] = ST[2][3] - f->brushprimit_texdef.coords[0][2];
f->brushprimit_texdef.coords[1][1] = ST[2][4] - f->brushprimit_texdef.coords[1][2];
}
void Brush_BuildWindings( brush_t *b )
{
winding_t *w;
face_t *face;
vec_t v;
Brush_SnapPlanepts( b );
// clear the mins/maxs bounds
b->mins[0] = b->mins[1] = b->mins[2] = 99999;
b->maxs[0] = b->maxs[1] = b->maxs[2] = -99999;
Brush_MakeFacePlanes (b);
face = b->brush_faces;
for ( ; face ; face=face->next)
{
int i, j;
w = face->face_winding = MakeFaceWinding (b, face);
face->d_texture = Texture_ForName( face->texdef.name );
if (!w)
{
continue;
}
for (i=0 ; i<w->numpoints ; i++)
{
// add to bounding box
for (j=0 ; j<3 ; j++)
{
v = w->points[i][j];
if (v > b->maxs[j])
b->maxs[j] = v;
if (v < b->mins[j])
b->mins[j] = v;
}
}
// setup s and t vectors, and set color
BeginTexturingFace( b, face, face->d_texture);
for(i = 0; i < w->numpoints; i++)
EmitTextureCoordinates(w->points[i],face->d_texture,face);
}
}
