-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2011 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
#include <cmath>
#include "box.h"
#include "primitivebuilder.h"
void BoxBuilder::build_face(PrimitiveBuilder &builder, const Vector3 &o, const Vector3 &s1, const Vector3 &s2) const
{
- if(tangent_attr>=0)
+ float l1 = 1, l2 = 1;
+ if(generate_tbn || tex_fit!=STRETCH)
{
- builder.attrib(tangent_attr, s1.x, s1.y, s1.z);
- builder.attrib(binormal_attr, s2.x, s2.y, s2.z);
+ l1 = s1.norm();
+ l2 = s2.norm();
}
- float u_size = 1;
- float v_size = 1;
- if(tex_fit!=STRETCH)
+
+ if(generate_tbn)
{
- float l1 = sqrt(s1.x*s1.x+s1.y*s1.y+s1.z*s1.z);
- float l2 = sqrt(s2.x*s2.x+s2.y*s2.y+s2.z*s2.z);
- if((l1<l2)==(tex_fit==CUT))
- u_size = l1/l2;
- else
- v_size = l2/l1;
+ builder.tangent(s1/l1);
+ builder.binormal(s2/l2);
}
+
+ float u_size = 1;
+ float v_size = 1;
+ adjust_texture_scale(u_size, v_size, l1, l2);
+
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();
}