source/geometrybuilder.cpp

   1 /* $Id$
   2
   3 This file is part of libmspgl
   4 Copyright © 2011  Mikko Rasa, Mikkosoft Productions
   5 Distributed under the LGPL
   6 */
   7
   8 #include "geometrybuilder.h"
   9 #include "meshbuilder.h"
  10
  11 namespace Msp {
  12 namespace GL {
  13
  14 GeometryBuilder::GeometryBuilder():
  15         tangent_attr(-1),
  16         binormal_attr(-1),
  17         tex_fit(STRETCH)
  18 { }
  19
  20 GeometryBuilder &GeometryBuilder::tangent(unsigned t)
  21 {
  22         tangent_attr = t;
  23         return *this;
  24 }
  25
  26 GeometryBuilder &GeometryBuilder::binormal(unsigned b)
  27 {
  28         binormal_attr = b;
  29         return *this;
  30 }
  31
  32 GeometryBuilder &GeometryBuilder::texture_fit(TextureFit tf)
  33 {
  34         tex_fit = tf;
  35         return *this;
  36 }
  37
  38 void GeometryBuilder::adjust_texture_scale(float &u_scale, float &v_scale, float width, float height) const
  39 {
  40         if(tex_fit!=STRETCH)
  41         {
  42                 if((width<height)==(tex_fit==CROP))
  43                         u_scale *= width/height;
  44                 else
  45                         v_scale *= height/width;
  46         }
  47 }
  48
  49 void GeometryBuilder::build(Mesh &mesh) const
  50 {
  51         MeshBuilder builder(mesh);
  52         builder.auto_offset();
  53         build(builder);
  54 }
  55
  56 } // namespace GL
  57 } // namespace Msp