- forward[0] = rsurface_modelorg[0] - center[0];
- forward[1] = rsurface_modelorg[1] - center[1];
- forward[2] = 0;
- VectorNormalize(forward);
- right[0] = forward[1];
- right[1] = -forward[0];
- right[2] = 0;
- VectorSet(up, 0, 0, 1);
+ VectorClear(center);
+ for (i = 0;i < 4;i++)
+ VectorAdd(center, (rsurface_vertex3f + 3 * surface->num_firstvertex) + (j+i) * 3, center);
+ VectorScale(center, 0.25f, center);
+ if (rsurface_texture->textureflags & Q3TEXTUREFLAG_AUTOSPRITE2)
+ {
+ forward[0] = rsurface_modelorg[0] - center[0];
+ forward[1] = rsurface_modelorg[1] - center[1];
+ forward[2] = 0;
+ VectorNormalize(forward);
+ right[0] = forward[1];
+ right[1] = -forward[0];
+ right[2] = 0;
+ VectorSet(up, 0, 0, 1);
+ }
+ // FIXME: calculate vectors from triangle edges instead of using texture vectors as an easy way out?
+ Matrix4x4_FromVectors(&matrix1, (rsurface_normal3f + 3 * surface->num_firstvertex) + j*3, (rsurface_svector3f + 3 * surface->num_firstvertex) + j*3, (rsurface_tvector3f + 3 * surface->num_firstvertex) + j*3, center);
+ Matrix4x4_Invert_Simple(&imatrix1, &matrix1);
+ for (i = 0;i < 4;i++)
+ Matrix4x4_Transform(&imatrix1, (rsurface_vertex3f + 3 * surface->num_firstvertex) + (j+i)*3, v[i]);
+ for (i = 0;i < 4;i++)
+ VectorMAMAMAM(1, center, v[i][0], forward, v[i][1], right, v[i][2], up, rsurface_array_modelvertex3f + (surface->num_firstvertex+i+j) * 3);