void BoxBuilder::build_face(PrimitiveBuilder &builder, const Vector3 &o, const Vector3 &s1, const Vector3 &s2) const
{
float l1 = 1, l2 = 1;
- if(tangent_attr>=0 || tex_fit!=STRETCH)
- l1 = sqrt(s1.x*s1.x+s1.y*s1.y+s1.z*s1.z);
- if(binormal_attr>=0 || tex_fit!=STRETCH)
- l2 = sqrt(s2.x*s2.x+s2.y*s2.y+s2.z*s2.z);
+ if(generate_tbn || tex_fit!=STRETCH)
+ {
+ l1 = s1.norm();
+ l2 = s2.norm();
+ }
- if(tangent_attr>=0)
- builder.attrib(tangent_attr, s1.x/l1, s1.y/l1, s1.z/l1);
- if(binormal_attr>=0)
- builder.attrib(binormal_attr, s2.x/l2, s2.y/l2, s2.z/l2);
+ if(generate_tbn)
+ {
+ builder.tangent(s1/l1);
+ builder.binormal(s2/l2);
+ }
float u_size = 1;
float v_size = 1;
builder.begin(TRIANGLE_STRIP);
builder.texcoord(0, v_size);
- builder.vertex(o.x+s2.x, o.y+s2.y, o.z+s2.z);
+ builder.vertex(o+s2);
builder.texcoord(0, 0);
- builder.vertex(o.x, o.y, o.z);
+ builder.vertex(o);
builder.texcoord(u_size, v_size);
- builder.vertex(o.x+s1.x+s2.x, o.y+s1.y+s2.y, o.z+s1.z+s2.z);
+ builder.vertex(o+s1+s2);
builder.texcoord(u_size, 0);
- builder.vertex(o.x+s1.x, o.y+s1.y, o.z+s1.z);
+ builder.vertex(o+s1);
builder.end();
}