/* ** $VER: select.c 1.1 (12.03.1998) ** ** This is an example program for CyberGL ** ** Written by Frank Gerberding ** ** Copyright © 1996-1998 by phase5 digital products ** All Rights reserved. ** */ #include #include #include #include #define CYBERGLNAME "cybergl.library" #define CYBERGLVERSION 39L #define SHARED /* we use the cyberglshared library */ #define GL_APICOMPATIBLE /* we use stubs from cybergl.lib */ #include #include #ifdef SHARED LONG __oslibversion = 39L; LONG __CGLlibversion = CYBERGLVERSION; #endif #define WIDTH 600 #define HEIGHT 450 #define BUFSIZE 1000 #define RED 1 #define GREEN 2 #define BLUE 3 #define WHITE 4 void pointLight (GLdouble x, GLdouble y, GLdouble z, GLdouble r, GLdouble g, GLdouble b, GLdouble att0, GLdouble att1, GLdouble att2, GLenum light) { GLfloat pos [4]; GLfloat color [4]; pos [0] = (GLfloat) x; pos [1] = (GLfloat) y; pos [2] = (GLfloat) z; pos [3] = (GLfloat) 1.0; color [0] = (GLfloat) r; color [1] = (GLfloat) g; color [2] = (GLfloat) b; color [3] = (GLfloat) 0.0; glEnable (GL_LIGHTING); glEnable (light); glLightfv (light, GL_POSITION, pos); glLightfv (light, GL_DIFFUSE, color); glLightfv (light, GL_SPECULAR, color); glLightf (light, GL_CONSTANT_ATTENUATION, (GLfloat) att0); glLightf (light, GL_LINEAR_ATTENUATION, (GLfloat) att1); glLightf (light, GL_QUADRATIC_ATTENUATION, (GLfloat) att2); } void drawCube (void) { glBegin (GL_QUADS); glNormal3d ( 0.0, 0.0, 1.0); glEdgeFlag (GL_TRUE); glVertex3d (-0.5, -0.5, 0.5); glVertex3d ( 0.5, -0.5, 0.5); glVertex3d ( 0.5, 0.5, 0.5); glVertex3d (-0.5, 0.5, 0.5); glNormal3d ( 1.0, 0.0, 0.0); glEdgeFlag (GL_TRUE); glVertex3d ( 0.5, -0.5, 0.5); glEdgeFlag (GL_FALSE); glVertex3d ( 0.5, -0.5, -0.5); glEdgeFlag (GL_TRUE); glVertex3d ( 0.5, 0.5, -0.5); glEdgeFlag (GL_FALSE); glVertex3d ( 0.5, 0.5, 0.5); glNormal3d ( 0.0, 0.0, -1.0); glEdgeFlag (GL_TRUE); glVertex3d ( 0.5, -0.5, -0.5); glVertex3d (-0.5, -0.5, -0.5); glVertex3d (-0.5, 0.5, -0.5); glVertex3d ( 0.5, 0.5, -0.5); glNormal3d (-1.0, 0.0, 0.0); glEdgeFlag (GL_TRUE); glVertex3d (-0.5, -0.5, -0.5); glEdgeFlag (GL_FALSE); glVertex3d (-0.5, -0.5, 0.5); glEdgeFlag (GL_TRUE); glVertex3d (-0.5, 0.5, 0.5); glEdgeFlag (GL_FALSE); glVertex3d (-0.5, 0.5, -0.5); glNormal3d ( 0.0, 1.0, 0.0); glVertex3d (-0.5, 0.5, 0.5); glVertex3d ( 0.5, 0.5, 0.5); glVertex3d ( 0.5, 0.5, -0.5); glVertex3d (-0.5, 0.5, -0.5); glNormal3d ( 0.0, -1.0, 0.0); glVertex3d (-0.5, -0.5, -0.5); glVertex3d ( 0.5, -0.5, -0.5); glVertex3d ( 0.5, -0.5, 0.5); glVertex3d (-0.5, -0.5, 0.5); glEnd (); } void drawCubes (void) { glMatrixMode (GL_MODELVIEW); glInitNames (); glPushName (RED); glPushMatrix (); glTranslated (-1.0, -1.0, 0.0); glColor3d (1.0, 0.0, 0.0); drawCube (); glPopMatrix (); glLoadName (GREEN); glPushMatrix (); glTranslated (-1.0, 1.0, 0.0); glColor3d (0.0, 1.0, 0.0); drawCube (); glPopMatrix (); glLoadName (BLUE); glPushMatrix (); glTranslated ( 1.0, 1.0, 0.0); glColor3d (0.0, 0.0, 1.0); drawCube (); glPopMatrix (); glLoadName (WHITE); glPushMatrix (); glTranslated ( 1.0, -1.0, 0.0); glColor3d (1.0, 1.0, 1.0); drawCube (); glPopMatrix (); glPopName (); } void printBuffer (GLint num, GLuint buffer[]) { GLint count; GLint index; GLint remain; index = 0; for (count = 0; count < num; count++) { for (remain = buffer [index]; remain > 0; remain--) { switch (buffer [index + 2 + remain]) { case RED: printf ("Roter Würfel\n"); break; case GREEN: printf ("Grüner Würfel\n"); break; case BLUE: printf ("Blauer Würfel\n"); break; case WHITE: printf ("Weißer Würfel\n"); break; } } index += 3 + buffer [index]; } } void handle_window_events (struct Window *window, GLuint *buffer) { struct IntuiMessage *msg; int done = 0; while (!done) { Wait (1L << window->UserPort->mp_SigBit); while ((!done) && (msg = (struct IntuiMessage *) GetMsg (window->UserPort))) { switch (msg->Class) { case IDCMP_CLOSEWINDOW: done = 1; break; case IDCMP_MOUSEBUTTONS: if (msg->Code == SELECTDOWN) { glRenderMode (GL_SELECT); glMatrixMode (GL_PROJECTION); glLoadIdentity (); glPickMatrix ((double) msg->MouseX - window->BorderLeft, (double) HEIGHT - (msg->MouseY - window->BorderTop - 1), 4.0, 4.0); glPerspective (40.0, 1.333, 0.5, 50.5); drawCubes (); printBuffer (glRenderMode (GL_RENDER), buffer); } break; } ReplyMsg ((struct Message *) msg); } } } void main (int argc, char *argv[]) { void *window; GLuint buffer [BUFSIZE]; window = openGLWindowTags (WIDTH, HEIGHT, GLWA_Title, "Selection Mode", GLWA_IDCMP, IDCMP_CLOSEWINDOW | IDCMP_MOUSEBUTTONS, GLWA_CloseGadget, TRUE, GLWA_DepthGadget, TRUE, GLWA_DragBar, TRUE, GLWA_Activate, TRUE, GLWA_RGBAMode, GL_TRUE, TAG_DONE); if (window) { glEnable (GL_DITHER); glEnable (GL_CULL_FACE); glColorMaterial (GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE); glEnable (GL_COLOR_MATERIAL); glShadeModel (GL_SMOOTH); glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glSelectBuffer (BUFSIZE, buffer); glMatrixMode (GL_PROJECTION); glPerspective (40.0, 1.333, 0.5, 50.5); glMatrixMode (GL_MODELVIEW); #ifndef GL_APICOMPATIBLE { GLlookAt lookat; lookat.eyex = 2.0; lookat.eyey = 2.0; lookat.eyez = 5.0; lookat.centerx = 0.0; lookat.centery = 0.0; lookat.centerz = 0.0; lookat.upx = 0.0; lookat.upy = 1.0; lookat.upz = 0.0; glLookAt (&lookat); } #else glLookAt (2.0, 2.0, 5.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0); #endif pointLight (5.0, 6.0, 10.0, 1.0, 1.0, 1.0, 1.0, 0.0, 0.0, GL_LIGHT0); drawCubes (); handle_window_events (getWindow (window), buffer); closeGLWindow (window); } }