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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 204 | chris | 1 | /* |
| 2 | ** draw_object function for AR tracking sample code |
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| 3 | ** uses glut functions to draw simple objects |
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| 4 | ** |
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| 5 | */ |
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| 6 | #include <stdio.h> |
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| 7 | #include <string.h> |
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| 8 | #include <math.h> |
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| 9 | #if defined(_WIN32) |
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| 10 | #include <windows.h> |
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| 11 | #else |
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| 12 | #include <strings.h> |
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| 13 | #endif |
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| 14 | #ifndef __APPLE__ |
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| 15 | #include <GL/gl.h> |
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| 16 | #include <GL/glut.h> |
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| 17 | #else |
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| 18 | #include <OpenGL/gl.h> |
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| 19 | #include <GLUT/glut.h> |
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| 20 | #endif |
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| 21 | #include <AR/gsub.h> |
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| 22 | #include <AR/ar.h> |
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| 23 | #include "draw_object.h" |
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| 24 | #include "object.h" |
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| 25 | |||
| 26 | /* material properties */ |
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| 27 | GLfloat mat_specular1[] = {0.2, 0.0, 0.0, 1.0}; |
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| 28 | GLfloat mat_shininess1[] = {50.0}; |
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| 29 | GLfloat mat_specular2[] = {0.0, 0.0, 0.2, 1.0}; |
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| 30 | GLfloat mat_shininess2[] = {25.0}; |
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| 31 | |||
| 32 | GLfloat mat_ambient1[] = {1.0, 0.0, 0.0, 1.0}; |
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| 33 | GLfloat mat_ambient2[] = {0.0, 0.0, 1.0, 1.0}; |
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| 34 | GLfloat mat_flash_ambient1[] = {0.0, 1.0, 0.0, 1.0}; |
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| 35 | |||
| 36 | GLfloat mat_flash1[] = {1.0, 0.0, 0.0, 1.0}; |
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| 37 | GLfloat mat_flash_shiny1[] = {25.0}; |
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| 38 | GLfloat mat_flash2[] = {0.0, 0.0, 1.0, 1.0}; |
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| 39 | GLfloat mat_flash_shiny2[] = {50.0}; |
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| 40 | |||
| 41 | static int draw_object( char *name, double gl_para[16], int dispmode); |
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| 42 | |||
| 43 | /* draw the the AR objects */ |
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| 44 | int draw( ObjectData_T *object, int objectnum, int dispmode ) |
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| 45 | { |
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| 46 | int i; |
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| 47 | double gl_para[16]; |
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| 48 | |||
| 49 | /* calculate the viewing parameters - gl_para */ |
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| 50 | for( i = 0; i < objectnum; i++ ) { |
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| 51 | if( object[i].visible == 0 ) continue; |
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| 52 | |||
| 53 | argConvGlpara(object[i].trans, gl_para); |
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| 54 | |||
| 55 | /* draw the object */ |
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| 56 | draw_object( object[i].name, gl_para, dispmode); |
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| 57 | } |
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| 58 | |||
| 59 | return(0); |
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| 60 | } |
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| 61 | |||
| 62 | /* draw the user object */ |
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| 63 | static int draw_object( char *name, double gl_para[16], int dispmode) |
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| 64 | { |
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| 65 | int i; |
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| 66 | |||
| 67 | argDrawMode3D(); |
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| 68 | glDepthFunc(GL_LEQUAL); |
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| 69 | glEnable(GL_DEPTH_TEST); |
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| 70 | |||
| 71 | /* if in 3D display mode render views |
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| 72 | from both eye - otherwise from one eye */ |
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| 73 | for( i = 0; i < 3; i++ ) { |
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| 74 | if( dispmode == 1 ) { |
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| 75 | switch(i) { |
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| 76 | case 0: argDraw3dLeft(); break; |
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| 77 | case 1: argDraw3dRight(); break; |
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| 78 | case 2: argDraw3dCamera( 1, 1 ); break; |
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| 79 | } |
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| 80 | } |
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| 81 | else argDraw3dCamera( 0, 0 ); |
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| 82 | |||
| 83 | /* load the camera transformation matrix */ |
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| 84 | glMatrixMode(GL_MODELVIEW); |
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| 85 | glLoadMatrixd( gl_para ); |
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| 86 | init_lights(); |
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| 87 | |||
| 88 | |||
| 89 | /* draw the user object here |
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| 90 | - using the object name to select the object */ |
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| 91 | if( strcmp(name, "torus") == 0 ) { |
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| 92 | /* set object color */ |
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| 93 | glEnable(GL_LIGHTING); |
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| 94 | glEnable(GL_LIGHT0); |
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| 95 | glMaterialfv(GL_FRONT, GL_SPECULAR, mat_flash1); |
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| 96 | glMaterialfv(GL_FRONT, GL_SHININESS, mat_flash_shiny1); |
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| 97 | glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient1); |
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| 98 | |||
| 99 | /* draw a simple torus */ |
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| 100 | glMatrixMode(GL_MODELVIEW); |
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| 101 | glTranslatef( 0.0, 0.0, 10.0 ); |
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| 102 | glutSolidTorus(10.0, 40.0, 24, 24); |
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| 103 | glDisable( GL_LIGHTING ); |
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| 104 | } |
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| 105 | else if( strcmp(name, "sphere") == 0 ) { |
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| 106 | glEnable(GL_LIGHTING); |
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| 107 | glEnable(GL_LIGHT0); |
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| 108 | glMaterialfv(GL_FRONT, GL_SPECULAR, mat_flash1); |
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| 109 | glMaterialfv(GL_FRONT, GL_SHININESS, mat_flash_shiny1); |
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| 110 | glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient1); |
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| 111 | |||
| 112 | /* draw a sphere */ |
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| 113 | glMatrixMode(GL_MODELVIEW); |
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| 114 | glTranslatef( 0.0, 0.0, 40.0 ); |
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| 115 | glutSolidSphere(40.0, 24, 24); |
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| 116 | glDisable( GL_LIGHTING ); |
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| 117 | } |
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| 118 | else if( strcmp(name, "cube") == 0 ) { |
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| 119 | glEnable(GL_LIGHTING); |
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| 120 | glEnable(GL_LIGHT0); |
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| 121 | glMaterialfv(GL_FRONT, GL_SPECULAR, mat_flash2); |
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| 122 | glMaterialfv(GL_FRONT, GL_SHININESS, mat_flash_shiny2); |
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| 123 | glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient2); |
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| 124 | |||
| 125 | glMatrixMode(GL_MODELVIEW); |
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| 126 | glTranslatef( 0.0, 0.0, 25.0 ); |
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| 127 | glutSolidCube(50.0); |
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| 128 | glDisable( GL_LIGHTING ); |
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| 129 | } |
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| 130 | else if( strcmp(name, "cone") == 0 ) { |
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| 131 | glEnable(GL_LIGHTING); |
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| 132 | glEnable(GL_LIGHT0); |
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| 133 | glMaterialfv(GL_FRONT, GL_SPECULAR, mat_flash1); |
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| 134 | glMaterialfv(GL_FRONT, GL_SHININESS, mat_flash_shiny1); |
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| 135 | glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient1); |
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| 136 | |||
| 137 | glMatrixMode(GL_MODELVIEW); |
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| 138 | glutSolidCone(25.0, 100.0, 20, 24); |
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| 139 | glDisable( GL_LIGHTING ); |
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| 140 | } |
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| 141 | else { |
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| 142 | printf("unknown object type!!\n"); |
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| 143 | } |
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| 144 | |||
| 145 | if( dispmode == 0 ) break; |
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| 146 | if( arDebug == 0 && i == 1 ) break; |
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| 147 | } |
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| 148 | |||
| 149 | glDisable( GL_DEPTH_TEST ); |
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| 150 | argDrawMode2D(); |
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| 151 | |||
| 152 | return 0; |
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| 153 | } |
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| 154 | |||
| 155 | /* initialize the lights in the scene */ |
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| 156 | void init_lights() |
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| 157 | { |
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| 158 | GLfloat light_position[] = {0.0,-200.0,0.0,0.0}; |
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| 159 | GLfloat ambi[] = {0.1, 0.1, 0.1, 0.1}; |
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| 160 | GLfloat lightZeroColor[] = {0.9, 0.9, 0.9, 0.1}; |
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| 161 | |||
| 162 | glLightfv(GL_LIGHT0, GL_POSITION, light_position); |
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| 163 | glLightfv(GL_LIGHT0, GL_AMBIENT, ambi); |
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| 164 | glLightfv(GL_LIGHT0, GL_DIFFUSE, lightZeroColor); |
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| 165 | } |