source/transform.h

   1 #ifndef MSP_GL_TRANSFORM_H_
   2 #define MSP_GL_TRANSFORM_H_
   3
   4 #include <msp/datafile/objectloader.h>
   5 #include "matrix.h"
   6
   7 namespace Msp {
   8 namespace GL {
   9
  10 /**
  11 Stores a coordinate space transform as individual components.  Primarily
  12 intended for loading data from external sources.  At runtime transforms
  13 should generally be stored as matrices.
  14 */
  15 class Transform
  16 {
  17 public:
  18         class Loader: public DataFile::ObjectLoader<Transform>
  19         {
  20         public:
  21                 Loader(Transform &);
  22
  23         private:
  24                 void position_x(float);
  25                 void position_y(float);
  26                 void position_z(float);
  27                 void position(float, float, float);
  28                 void euler_x(float);
  29                 void euler_y(float);
  30                 void euler_z(float);
  31                 void euler(float, float, float);
  32                 void rotation(float, float, float, float);
  33                 void scale_x(float);
  34                 void scale_y(float);
  35                 void scale_z(float);
  36                 void scale_uniform(float);
  37                 void scale(float, float, float);
  38         };
  39
  40         enum ComponentMask
  41         {
  42                 NONE = 0,
  43                 POSITION_X = 1,
  44                 POSITION_Y = 2,
  45                 POSITION_Z = 4,
  46                 POSITION = POSITION_X|POSITION_Y|POSITION_Z,
  47                 EULER_X = 8,
  48                 EULER_Y = 16,
  49                 EULER_Z = 32,
  50                 EULER = EULER_X|EULER_Y|EULER_Z,
  51                 SCALE_X = 64,
  52                 SCALE_Y = 128,
  53                 SCALE_Z = 256,
  54                 SCALE = SCALE_X|SCALE_Y|SCALE_Z
  55         };
  56
  57         typedef Geometry::Angle<float> Angle;
  58         typedef LinAl::Vector<Angle, 3> AngleVector3;
  59
  60 private:
  61         Vector3 position;
  62         AngleVector3 euler;
  63         Vector3 scale;
  64         ComponentMask mask;
  65
  66 public:
  67         Transform();
  68
  69         static Transform from_matrix(const Matrix &);
  70
  71         void set_position(const Vector3 &);
  72         void set_euler(const AngleVector3 &);
  73         void set_rotation(const Angle &, const Vector3 &);
  74         void set_scale(float);
  75         void set_scale(const Vector3 &);
  76         const Vector3 &get_position() const { return position; }
  77         const AngleVector3 &get_euler() const { return euler; }
  78         const Vector3 &get_scale() const { return scale; }
  79         ComponentMask get_mask() const { return mask; }
  80
  81         Matrix to_matrix() const;
  82 };
  83
  84 inline Transform::ComponentMask operator&(Transform::ComponentMask m1, Transform::ComponentMask m2)
  85 { return static_cast<Transform::ComponentMask>(static_cast<int>(m1)&static_cast<int>(m2)); }
  86
  87 inline Transform::ComponentMask operator|(Transform::ComponentMask m1, Transform::ComponentMask m2)
  88 { return static_cast<Transform::ComponentMask>(static_cast<int>(m1)|static_cast<int>(m2)); }
  89
  90 inline Transform::ComponentMask operator^(Transform::ComponentMask m1, Transform::ComponentMask m2)
  91 { return static_cast<Transform::ComponentMask>(static_cast<int>(m1)^static_cast<int>(m2)); }
  92
  93 inline Transform::ComponentMask operator~(Transform::ComponentMask m)
  94 { return static_cast<Transform::ComponentMask>(~static_cast<int>(m)); }
  95
  96 } // namespace GL
  97 } // namespace Msp
  98
  99 #endif