geant4/source/analysis/g4tools/include/tools/sg/render_action

// Copyright (C) 2010, Guy Barrand. All rights reserved.
// See the file tools.license for terms.

#ifndef tools_sg_render_action
#define tools_sg_render_action

#include "matrix_action"

#include "../glprims"
#include "../vdata"
#include "../colorf"

namespace tools {
namespace sg {
  class gl_manager;
}}


namespace tools {
namespace sg {

typedef size_t bufpos;

class render_action : public matrix_action {
public:
  typedef unsigned int gstoid;
public:
  virtual void load_proj_matrix(const mat4f&) = 0;
  virtual void load_model_matrix(const mat4f&) = 0;
public:
  virtual void draw_vertex_array(gl::mode_t,size_t,const float*) = 0;
  virtual void draw_vertex_array_xy(gl::mode_t,size_t,const float*) = 0;
  virtual void draw_vertex_color_array(gl::mode_t,size_t,const float*,const float*) = 0;
  virtual void draw_vertex_normal_array(gl::mode_t,size_t,const float*,const float*) = 0;
  virtual void draw_vertex_color_normal_array(gl::mode_t,size_t,const float*,const float*,const float*) = 0;

  /////////////////////////////////////////////////////////////////
  /// texture /////////////////////////////////////////////////////
  /////////////////////////////////////////////////////////////////
  virtual void draw_vertex_array_texture(gl::mode_t,size_t,const float*,gstoid,const float*) = 0;
  virtual void draw_vertex_normal_array_texture(gl::mode_t,size_t,const float*,const float*,gstoid,const float*) = 0;

  /////////////////////////////////////////////////////////////////
  /// VBO /////////////////////////////////////////////////////////
  /////////////////////////////////////////////////////////////////
  virtual void begin_gsto(gstoid) = 0;
  virtual void draw_gsto_v(gl::mode_t,size_t,bufpos) = 0;
  virtual void draw_gsto_vc(gl::mode_t,size_t,bufpos,bufpos) = 0;
  virtual void draw_gsto_vn(gl::mode_t,size_t,bufpos,bufpos) = 0;
  virtual void draw_gsto_vcn(gl::mode_t,size_t,bufpos,bufpos,bufpos) = 0;
  virtual void end_gsto() = 0;
  /////////////////////////////////////////////////////////////////
  /////////////////////////////////////////////////////////////////
  /////////////////////////////////////////////////////////////////

  virtual void clear_color(float,float,float,float) = 0;
  virtual void color4f(float,float,float,float) = 0;
  virtual void line_width(float) = 0;
  virtual void point_size(float) = 0;
  virtual void set_polygon_offset(bool) = 0;
  virtual void set_winding(winding_type) = 0;
  virtual void set_cull_face(bool) = 0;
  virtual void set_point_smooth(bool) = 0;
  virtual void set_line_smooth(bool) = 0;
  virtual void normal(float,float,float) = 0;
  virtual void set_depth_test(bool) = 0;
  virtual unsigned int max_lights() = 0;
  virtual void enable_light(unsigned int,
                            float,float,float, //directrion
                            float,float,float,float) = 0; //RGBA
  virtual void set_lighting(bool) = 0;
  virtual void restore_state(unsigned int) = 0;

  virtual sg::gl_manager& gl_manager() = 0; //sg:: is needed.
public:
  render_action(std::ostream& a_out,unsigned int a_ww,unsigned int a_wh)
  :matrix_action(a_out,a_ww,a_wh){}
  virtual ~render_action(){}
public:
  render_action(const render_action& a_from)
  :matrix_action(a_from)
  {}
  render_action& operator=(const render_action& a_from){
    matrix_action::operator=(a_from);
    return *this;
  }
public:
  void load_matrices_to_identity() {
    load_proj_matrix(m_identity);
    load_model_matrix(m_identity);
  }
  void load_matrices_from_state() {
    load_proj_matrix(m_state.m_proj);
    load_model_matrix(m_state.m_model);
  }

  void clear_color(const colorf& a_color){
    clear_color(a_color[0],a_color[1],a_color[2],a_color[3]);
  }
  void color4f(const colorf& a_color){
    color4f(a_color[0],a_color[1],a_color[2],a_color[3]);
  }

  void enable_light(unsigned int a_light,
                    const vec3f& a_dir,
                    const colorf& a_col) {
    enable_light(a_light,
                 a_dir[0],a_dir[1],a_dir[2],
                 a_col[0],a_col[1],a_col[2],1);
  }

  void draw_vertex_array(gl::mode_t a_mode,const std::vector<float>& a_xyzs){
    const float* _xyzs = vec_data<float>(a_xyzs);
    draw_vertex_array(a_mode,a_xyzs.size(),_xyzs);    
  }

  void draw_vertex_array_xy(gl::mode_t a_mode,const std::vector<float>& a_xys){
    const float* _xys = vec_data<float>(a_xys);
    draw_vertex_array_xy(a_mode,a_xys.size(),_xys);    
  }

  void draw_vertex_color_array(gl::mode_t a_mode,
                               const std::vector<float>& a_xyzs,
                               const std::vector<float>& a_rgbas){
    const float* _xyzs = vec_data<float>(a_xyzs);
    const float* _rgbas = vec_data<float>(a_rgbas);
    draw_vertex_color_array(a_mode,a_xyzs.size(),_xyzs,_rgbas);    
  }

  void draw_vertex_normal_array(gl::mode_t a_mode,
                                const std::vector<float>& a_xyzs,
                                const std::vector<float>& a_nms){
    const float* _xyzs = vec_data<float>(a_xyzs);
    const float* _nms = vec_data<float>(a_nms);
    draw_vertex_normal_array(a_mode,a_xyzs.size(),_xyzs,_nms);    
  }

  void draw_vertex_color_normal_array(gl::mode_t a_mode,
                                      const std::vector<float>& a_xyzs,
                                      const std::vector<float>& a_rgbas,
                                      const std::vector<float>& a_nms){
    const float* _xyzs = vec_data<float>(a_xyzs);
    const float* _rgbas = vec_data<float>(a_rgbas);
    const float* _nms = vec_data<float>(a_nms);
    draw_vertex_color_normal_array(a_mode,a_xyzs.size(),_xyzs,_rgbas,_nms);    
  }

  void normal(const vec3f& a_vec) {normal(a_vec[0],a_vec[1],a_vec[2]);}

public:
  // for sphere::visit template.
  bool add_triangle_fan(size_t a_floatn,const float* a_xyzs,const float* a_nms) {
    draw_vertex_normal_array(gl::triangle_fan(),a_floatn,a_xyzs,a_nms);
    return true;
  }
  bool add_triangle_fan(size_t a_floatn,const float* a_xyzs,float* a_rgbas,const float* a_nms) {
    draw_vertex_color_normal_array(gl::triangle_fan(),a_floatn,a_xyzs,a_rgbas,a_nms);
    return true;
  }
  bool add_triangle_strip(size_t a_floatn,const float* a_xyzs,const float* a_nms) {
    draw_vertex_normal_array(gl::triangle_strip(),a_floatn,a_xyzs,a_nms);
    return true;
  }
  bool add_triangle_strip(size_t a_floatn,const float* a_xyzs,const float* a_rgbas,const float* a_nms) {
    draw_vertex_color_normal_array(gl::triangle_strip(),a_floatn,a_xyzs,a_rgbas,a_nms);
    return true;
  }
  bool add_line_loop(size_t a_floatn,const float* a_xyzs) {
    draw_vertex_array(gl::line_loop(),a_floatn,a_xyzs);
    return true;
  }
  bool add_line_strip(size_t a_floatn,const float* a_xyzs) {
    draw_vertex_array(gl::line_strip(),a_floatn,a_xyzs);
    return true;
  }
  bool add_points(size_t a_floatn,const float* a_xyzs) {
    draw_vertex_array(gl::points(),a_floatn,a_xyzs);
    return true;
  }

/*
  bool add_triangles_texture(size_t a_floatn,const float* a_xyzs,gstoid a_tex,const float* a_texs){
    draw_vertex_array_texture(gl::triangles(),a_floatn,a_xyzs,a_tex,a_texs);
    return true;
  }
  bool add_triangle_fan_texture(size_t a_floatn,const float* a_xyzs,gstoid a_tex,const float* a_texs){
    draw_vertex_array_texture(gl::triangle_fan(),a_floatn,a_xyzs,a_tex,a_texs);
    return true;
  }
  bool add_triangle_strip_texture(size_t a_floatn,const float* a_xyzs,gstoid a_tex,const float* a_texs){
    draw_vertex_array_texture(gl::triangle_strip(),a_floatn,a_xyzs,a_tex,a_texs);
    return true;
  }
*/
  bool add_triangle_fan_texture(size_t a_floatn,const float* a_xyzs,const float* a_nms,
                                gstoid a_tex,const float* a_texs){
    draw_vertex_normal_array_texture(gl::triangle_fan(),a_floatn,a_xyzs,a_nms,a_tex,a_texs);
    return true;
  }
  bool add_triangle_strip_texture(size_t a_floatn,const float* a_xyzs,const float* a_nms,
                                  gstoid a_tex,const float* a_texs){
    draw_vertex_normal_array_texture(gl::triangle_strip(),a_floatn,a_xyzs,a_nms,a_tex,a_texs);
    return true;
  }

  bool add_line_loop(const std::vector<float>& a_xyzs){
    const float* _xyzs = vec_data<float>(a_xyzs);
    draw_vertex_array(gl::line_loop(),a_xyzs.size(),_xyzs);
    return true;
  }

  void dump_vertex_array_xy(std::ostream& a_out,gl::mode_t /*a_mode*/,size_t a_floatn,const float* a_xys) {
    size_t num = a_floatn/2;
    if(!num) return;
    a_out << "dump_vertex_array_xy : begin : " << num << std::endl;
    for(size_t index=0;index<num;index++) {
      a_out << "xy : " << index
            << " " << a_xys[2*index]
            << " " << a_xys[2*index+1]
            << std::endl; 
    }
    a_out << "dump_vertex_array_xy : end." << std::endl;
  }
};

}}

#endif