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Added 1st (ugly) version of viewer window
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Tony Gonçalves
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Jan 31, 2011
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| #include <GL/gl.h> | ||
| #include <GL/glu.h> | ||
| #include <GL/glut.h> | ||
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| #include "viewer.h" | ||
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| int window; // GLUT window id | ||
| int width; | ||
| int height; | ||
| GLuint tex_id; | ||
| int buf_size; | ||
| GLubyte *buf; | ||
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| /* The main drawing function. */ | ||
| void draw() { | ||
| const XnDepthPixel *data = depthMD.Data(); | ||
| GLubyte tmp; | ||
| for (int i = 0; i < width*height; i++) { | ||
| tmp = (10000 - data[i]) / 80; | ||
| //printf("tmp = %d\n", tmp); | ||
| buf[i*3] = tmp; | ||
| buf[i*3+1] = tmp; | ||
| buf[i*3+2] = tmp; | ||
| } | ||
| glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, buf); | ||
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| // glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); | ||
| // glLoadIdentity(); | ||
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| // glTranslatef(0.0f,0.0f,-3.0f); | ||
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| // 2d texture, level of detail 0 (normal), 3 components (red, green, blue), x size from image, y size from image, | ||
| // border 0 (normal), rgb color data, unsigned byte data, and finally the data itself. | ||
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| glBindTexture(GL_TEXTURE_2D, tex_id); | ||
| glColor4f(1.0, 1.0, 1.0, 1.0); | ||
| // draw a square (quadrilateral) | ||
| glBegin(GL_QUADS); // start drawing a polygon (4 sided) | ||
| glTexCoord2f(0.0f, 0.0f); glVertex2i(0, 0); // Top Left | ||
| glTexCoord2f(1.0f, 0.0f); glVertex2i(width, 0); // Top Right | ||
| glTexCoord2f(1.0f, 1.0f); glVertex2i(width, height); // Bottom Right | ||
| glTexCoord2f(0.0f, 1.0f); glVertex2i(0, height); // Bottom Left | ||
| glEnd(); // done with the polygon | ||
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| // swap buffers to display, since we're double buffered. | ||
| glutSwapBuffers(); | ||
| } | ||
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| void init_tex() { | ||
| // Create Texture | ||
| glGenTextures(1, &tex_id); | ||
| glBindTexture(GL_TEXTURE_2D, tex_id); | ||
| glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR); | ||
| glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR); | ||
| } | ||
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| void init_window(int argc, char **argv, int w, int h, void main_loop(void)) { | ||
| width = w; | ||
| height = h; | ||
| buf_size = 3*width*height*sizeof(GLubyte); | ||
| buf = (GLubyte*)malloc(buf_size); | ||
| glutInit(&argc, argv); | ||
| glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE | GLUT_ALPHA | GLUT_DEPTH); | ||
| glutInitWindowSize(width, height); | ||
| glutInitWindowPosition(0, 0); | ||
| window = glutCreateWindow("OSCeleton"); | ||
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| /* Register the function to do all our OpenGL drawing. */ | ||
| glutDisplayFunc(main_loop); | ||
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| /* Go fullscreen. This is the soonest we could possibly go fullscreen. */ | ||
| //glutFullScreen(); | ||
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| /* Even if there are no events, redraw our gl scene. */ | ||
| glutIdleFunc(main_loop); | ||
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| /* Register the function called when our window is resized. */ | ||
| //glutReshapeFunc(&ReSizeGLScene); | ||
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| /* Register the function called when the keyboard is pressed. */ | ||
| //glutKeyboardFunc(&keyPressed); | ||
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| gluOrtho2D(0.0, width, height, 0.0); | ||
| glEnable(GL_TEXTURE_2D); | ||
| glEnable(GL_BLEND); | ||
| glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); | ||
| init_tex(); | ||
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| //glClearColor(0.0f, 0.0f, 0.0f, 0.0f); | ||
| //glClearDepth(1.0); | ||
| //glDepthFunc(GL_LESS); | ||
| //glEnable(GL_DEPTH_TEST); | ||
| //glShadeModel(GL_SMOOTH); | ||
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| //glMatrixMode(GL_PROJECTION); | ||
| //glLoadIdentity(); | ||
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| //gluPerspective(45.0f,(GLfloat)width/(GLfloat)height,0.1f,100.0f); // Calculate The Aspect Ratio Of The Window | ||
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| //glMatrixMode(GL_MODELVIEW); | ||
| } |
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