1 | // |
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2 | // "$Id: cube.cxx 8033 2010-12-15 12:11:16Z AlbrechtS $" |
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3 | // |
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4 | // Another forms test program for the Fast Light Tool Kit (FLTK). |
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5 | // |
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6 | // Modified to have 2 cubes to test multiple OpenGL contexts |
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7 | // |
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8 | // Copyright 1998-2010 by Bill Spitzak and others. |
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9 | // |
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10 | // This library is free software; you can redistribute it and/or |
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11 | // modify it under the terms of the GNU Library General Public |
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12 | // License as published by the Free Software Foundation; either |
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13 | // version 2 of the License, or (at your option) any later version. |
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14 | // |
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15 | // This library is distributed in the hope that it will be useful, |
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16 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
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17 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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18 | // Library General Public License for more details. |
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19 | // |
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20 | // You should have received a copy of the GNU Library General Public |
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21 | // License along with this library; if not, write to the Free Software |
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22 | // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
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23 | // USA. |
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24 | // |
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25 | // Please report all bugs and problems on the following page: |
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26 | // |
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27 | // http://www.fltk.org/str.php |
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28 | // |
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29 | |
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30 | #include <config.h> |
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31 | #include <FL/Fl.H> |
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32 | #include <FL/Fl_Window.H> |
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33 | #include <FL/Fl_Box.H> |
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34 | #include <FL/Fl_Button.H> |
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35 | #include <FL/Fl_Radio_Light_Button.H> |
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36 | #include <FL/Fl_Slider.H> |
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37 | #include <stdlib.h> |
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38 | |
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39 | #if !HAVE_GL |
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40 | class cube_box : public Fl_Box { |
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41 | public: |
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42 | double lasttime; |
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43 | int wire; |
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44 | double size; |
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45 | double speed; |
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46 | cube_box(int x,int y,int w,int h,const char *l=0) |
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47 | :Fl_Box(FL_DOWN_BOX,x,y,w,h,l){ |
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48 | label("This demo does\nnot work without GL"); |
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49 | } |
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50 | }; |
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51 | #else |
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52 | #include <FL/Fl_Gl_Window.H> |
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53 | #include <FL/gl.h> |
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54 | |
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55 | class cube_box : public Fl_Gl_Window { |
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56 | void draw(); |
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57 | int handle(int); |
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58 | public: |
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59 | double lasttime; |
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60 | int wire; |
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61 | double size; |
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62 | double speed; |
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63 | cube_box(int x,int y,int w,int h,const char *l=0) |
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64 | : Fl_Gl_Window(x,y,w,h,l) {lasttime = 0.0;} |
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65 | }; |
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66 | |
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67 | /* The cube definition */ |
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68 | float v0[3] = {0.0, 0.0, 0.0}; |
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69 | float v1[3] = {1.0, 0.0, 0.0}; |
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70 | float v2[3] = {1.0, 1.0, 0.0}; |
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71 | float v3[3] = {0.0, 1.0, 0.0}; |
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72 | float v4[3] = {0.0, 0.0, 1.0}; |
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73 | float v5[3] = {1.0, 0.0, 1.0}; |
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74 | float v6[3] = {1.0, 1.0, 1.0}; |
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75 | float v7[3] = {0.0, 1.0, 1.0}; |
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76 | |
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77 | #define v3f(x) glVertex3fv(x) |
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78 | |
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79 | void drawcube(int wire) { |
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80 | /* Draw a colored cube */ |
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81 | glBegin(wire ? GL_LINE_LOOP : GL_POLYGON); |
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82 | glColor3ub(0,0,255); |
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83 | v3f(v0); v3f(v1); v3f(v2); v3f(v3); |
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84 | glEnd(); |
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85 | glBegin(wire ? GL_LINE_LOOP : GL_POLYGON); |
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86 | glColor3ub(0,255,255); v3f(v4); v3f(v5); v3f(v6); v3f(v7); |
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87 | glEnd(); |
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88 | glBegin(wire ? GL_LINE_LOOP : GL_POLYGON); |
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89 | glColor3ub(255,0,255); v3f(v0); v3f(v1); v3f(v5); v3f(v4); |
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90 | glEnd(); |
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91 | glBegin(wire ? GL_LINE_LOOP : GL_POLYGON); |
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92 | glColor3ub(255,255,0); v3f(v2); v3f(v3); v3f(v7); v3f(v6); |
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93 | glEnd(); |
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94 | glBegin(wire ? GL_LINE_LOOP : GL_POLYGON); |
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95 | glColor3ub(0,255,0); v3f(v0); v3f(v4); v3f(v7); v3f(v3); |
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96 | glEnd(); |
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97 | glBegin(wire ? GL_LINE_LOOP : GL_POLYGON); |
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98 | glColor3ub(255,0,0); v3f(v1); v3f(v2); v3f(v6); v3f(v5); |
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99 | glEnd(); |
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100 | } |
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101 | |
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102 | void cube_box::draw() { |
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103 | lasttime = lasttime+speed; |
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104 | if (!valid()) { |
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105 | glLoadIdentity(); |
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106 | glViewport(0,0,w(),h()); |
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107 | glEnable(GL_DEPTH_TEST); |
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108 | glFrustum(-1,1,-1,1,2,10000); |
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109 | glTranslatef(0,0,-10); |
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110 | gl_font(FL_HELVETICA_BOLD, 16 ); |
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111 | } |
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112 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
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113 | glPushMatrix(); |
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114 | glRotatef(float(lasttime*1.6),0,0,1); |
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115 | glRotatef(float(lasttime*4.2),1,0,0); |
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116 | glRotatef(float(lasttime*2.3),0,1,0); |
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117 | glTranslatef(-1.0, 1.2f, -1.5); |
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118 | glScalef(float(size),float(size),float(size)); |
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119 | drawcube(wire); |
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120 | glPopMatrix(); |
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121 | gl_color(FL_GRAY); |
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122 | glDisable(GL_DEPTH_TEST); |
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123 | gl_draw(wire ? "Cube: wire" : "Cube: flat", -4.5f, -4.5f ); |
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124 | glEnable(GL_DEPTH_TEST); |
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125 | } |
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126 | |
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127 | int cube_box::handle(int e) { |
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128 | switch (e) { |
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129 | case FL_ENTER: cursor(FL_CURSOR_CROSS); break; |
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130 | case FL_LEAVE: cursor(FL_CURSOR_DEFAULT); break; |
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131 | } |
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132 | return Fl_Gl_Window::handle(e); |
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133 | } |
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134 | |
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135 | #endif |
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136 | |
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137 | Fl_Window *form; |
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138 | Fl_Slider *speed, *size; |
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139 | Fl_Button *button, *wire, *flat; |
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140 | cube_box *cube, *cube2; |
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141 | |
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142 | void makeform(const char *name) { |
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143 | form = new Fl_Window(510+390,390,name); |
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144 | new Fl_Box(FL_DOWN_FRAME,20,20,350,350,""); |
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145 | new Fl_Box(FL_DOWN_FRAME,510,20,350,350,""); |
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146 | speed = new Fl_Slider(FL_VERT_SLIDER,390,90,40,220,"Speed"); |
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147 | size = new Fl_Slider(FL_VERT_SLIDER,450,90,40,220,"Size"); |
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148 | wire = new Fl_Radio_Light_Button(390,20,100,30,"Wire"); |
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149 | flat = new Fl_Radio_Light_Button(390,50,100,30,"Flat"); |
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150 | button = new Fl_Button(390,340,100,30,"Exit"); |
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151 | cube = new cube_box(23,23,344,344, 0); |
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152 | cube2 = new cube_box(513,23,344,344, 0); |
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153 | Fl_Box *b = new Fl_Box(FL_NO_BOX,cube->x(),size->y(), |
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154 | cube->w(),size->h(),0); |
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155 | form->resizable(b); |
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156 | b->hide(); |
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157 | form->end(); |
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158 | } |
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159 | |
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160 | // added to demo printing |
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161 | #include <FL/Fl_Sys_Menu_Bar.H> |
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162 | #include <FL/Fl_Printer.H> |
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163 | |
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164 | void print_cb(Fl_Widget *w, void *data) |
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165 | { |
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166 | Fl_Printer printer; |
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167 | Fl_Window *win = Fl::first_window(); |
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168 | if(!win) return; |
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169 | if( printer.start_job(1) ) return; |
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170 | if( printer.start_page() ) return; |
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171 | printer.scale(0.5,0.5); |
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172 | printer.print_widget( win ); |
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173 | printer.end_page(); |
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174 | printer.end_job(); |
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175 | } |
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176 | // end of printing demo |
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177 | |
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178 | int main(int argc, char **argv) { |
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179 | makeform(argv[0]); |
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180 | // added to demo printing |
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181 | form->begin(); |
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182 | static Fl_Menu_Item items[] = { |
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183 | { "Print", 0, 0, 0, FL_SUBMENU }, |
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184 | { "Print window", 0, print_cb, 0, 0 }, |
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185 | { 0 }, |
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186 | { 0 } |
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187 | }; |
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188 | Fl_Sys_Menu_Bar *menubar_; |
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189 | menubar_ = new Fl_Sys_Menu_Bar(0, 0, 60, 20); |
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190 | menubar_->box(FL_FLAT_BOX); |
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191 | menubar_->menu(items); |
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192 | form->end(); |
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193 | // end of printing demo |
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194 | speed->bounds(4,0); |
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195 | speed->value(cube->speed = cube2->speed = 1.0); |
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196 | size->bounds(4,0.01); |
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197 | size->value(cube->size = cube2->size = 1.0); |
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198 | flat->value(1); cube->wire = 0; cube2->wire = 1; |
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199 | form->label("cube"); |
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200 | form->show(argc,argv); |
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201 | cube->show(); |
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202 | cube2->show(); |
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203 | #if 0 |
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204 | // This demonstrates how to manipulate OpenGL contexts. |
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205 | // In this case the same context is used by multiple windows (I'm not |
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206 | // sure if this is allowed on Win32, can somebody check?). |
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207 | // This fixes a bug on the XFree86 3.0 OpenGL where only one context |
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208 | // per program seems to work, but there are probably better uses for |
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209 | // this! |
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210 | cube->make_current(); // causes context to be created |
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211 | cube2->context(cube->context()); // share the contexts |
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212 | #endif |
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213 | for (;;) { |
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214 | if (form->visible() && speed->value()) |
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215 | {if (!Fl::check()) break;} // returns immediately |
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216 | else |
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217 | {if (!Fl::wait()) break;} // waits until something happens |
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218 | cube->wire = wire->value(); |
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219 | cube2->wire = !wire->value(); |
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220 | cube->size = cube2->size = size->value(); |
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221 | cube->speed = cube2->speed = speed->value(); |
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222 | cube->redraw(); |
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223 | cube2->redraw(); |
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224 | if (Fl::readqueue() == button) break; |
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225 | } |
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226 | return 0; |
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227 | } |
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228 | |
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229 | // |
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230 | // End of "$Id: cube.cxx 8033 2010-12-15 12:11:16Z AlbrechtS $". |
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231 | // |
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