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