/* handle OpenGL-window-callbacks ===================================================== List_functions_start: gl_init__ gl_init_trackball gl_move gl_button gl_key gl_draw gl_config List_functions_end: ===================================================== */ #ifdef _MSC_VER #define _CRT_SECURE_NO_DEPRECATE #include #endif #include #include #include #include "../ut/ut_umem.h" #include "../gui/gui__.h" // GUI_* #include "../gui/gui_ut.h" #include "tst_gui_gl2.h" #include "tst_geo.h" // Pointf #include "tst_trackball.h" int gl_stat = 0; // true if initgl not yet called float beginx,beginy; // position of mouse float quat[4]; // orientation of object float zoom; // field of view in degrees Pointf cenPt; // view-center in user-coords // Modelsize; box from 2 points; all coords must be inside this box. Pointf mdlMax = {30.0, 30.0, 30.0}; Pointf mdlMin = {-30.0, -30.0, -30.0}; int actBut = 0; static int wSizX=200, wSizY=200; //================================================================ void gl_init_trackball (int mode) { //================================================================ /// init trackball printf("gl_init_trackball %d\n",mode); // set up trackball beginx = 0; beginy = 0; if(mode != 0) return; zoom = 1.; cenPt.x = 0.; cenPt.y = 0.; cenPt.z = 0.; trackball (quat, 0.0, 0.0, 0.0, 0.0); return; } //==================================================================== void gl_init__ (void) { //==================================================================== /// init OpenGL GLfloat light0_pos[4] = { -50.0, 50.0, 0.0, 0.0 }; GLfloat light0_color[4] = { .6, .6, .6, 1.0 }; /* white light */ GLfloat light1_pos[4] = { 50.0, 50.0, 0.0, 0.0 }; GLfloat light1_color[4] = { .4, .4, 1, 1.0 }; /* cold blue light */ printf("gl_init__\n"); /* remove back faces */ glDisable(GL_CULL_FACE); glEnable(GL_DEPTH_TEST); // glDepthFunc(GL_LESS); /* light */ glLightfv(GL_LIGHT0, GL_POSITION, light0_pos); glLightfv(GL_LIGHT0, GL_DIFFUSE, light0_color); glLightfv(GL_LIGHT1, GL_POSITION, light1_pos); glLightfv(GL_LIGHT1, GL_DIFFUSE, light1_color); glEnable(GL_LIGHT0); // glEnable(GL_LIGHT1); glEnable(GL_LIGHTING); glColorMaterial(GL_FRONT_AND_BACK,GL_AMBIENT_AND_DIFFUSE); glEnable(GL_COLOR_MATERIAL); glViewport (0, 0, wSizX, wSizY); } //================================================================ int gl_move (MemObj *mo, void **data) { //================================================================ /// callback from mouse-move. if mousbuttons down: rotate|zoom|pan. int x, y; // printf("gl_move %d %d %d\n",x,y,actBut); // printf("gl_move event=%d device=%d x=%d y=%d\n", // GUI_DATA_EVENT, // TYP_EventMove // GUI_DATA_DEVICE, // TYP_DeviceMouse // GUI_DATA_I1, // x-val mousepos // GUI_DATA_I2); // y-val mousepos // printf(" modif=%d\n",GUI_keys_mod()); x = GUI_DATA_I1; // *(int*)data[2]; y = GUI_DATA_I2; if (actBut == 1) { // rotate trackball_rot (quat, beginx, beginy, x, y, wSizX, wSizY, &cenPt); gl_draw (mo, NULL); } if (actBut == 2) { // zoom trackball_zoom (&zoom, beginx, beginy, x, y, wSizX, wSizY); gl_draw (mo, NULL); } if (actBut == 3) { // pan trackball_pan (&cenPt, beginx, beginy, x, y, wSizX, wSizY); gl_draw (mo, NULL); } beginx = x; beginy = y; return 0; } //================================================================ int gl_button (MemObj *mo, void **data) { //================================================================ /// mousebuttons changed: save state. double fs; Obj_gui2 *go; // printf("gl_button %d %d\n",iButt,iStat); printf("gl_button event=%d key=%d\n", GUI_DATA_EVENT, // TYP_EventPress|TYP_EventRelease GUI_DATA_I2); // 1=left MB; 2=middle MB; 3=right MB; 4=wheel // mousewheel/scroll: do zoom if(GUI_DATA_I2 == GUI_MouseScUp) { fs = 1.2; goto L_zoom; } if(GUI_DATA_I2 == GUI_MouseScDown) { fs = 1. / 1.2; goto L_zoom; } // button-release if(GUI_DATA_EVENT == TYP_EventRelease) { actBut = 0; return 0; } // button down actBut = GUI_DATA_I2; return 0; //---------------------------------------------------------------- L_zoom: zoom *= fs; printf(">>>>>>>>>>>>>>>>>>>>>> zoom=%f\n",zoom); gl_draw (mo, NULL); return 0; } //================================================================ int gl_key (MemObj *mo, void **data) { //================================================================ /// keyboard-event. Key 'B': block input. int iKey, iMod; printf("gl_key event=%d key=%d modif=%d\n", GUI_DATA_EVENT, // event: TYP_EventPress|TYP_EventRelease GUI_DATA_I2, // key: ascii-value of key GUI_DATA_I3); // modifier: &1=shift; &4=ctrl; &8=alt. if(GUI_DATA_EVENT == TYP_EventRelease) return 0; // skip keyRelease iMod = GUI_DATA_I3; if(iMod & 256) printf(" mousebutton 1 = ON\n"); if(iMod & 512) printf(" mousebutton 2 = ON\n"); if(iMod & 1024) printf(" mousebutton 3 = ON\n"); iKey = GUI_DATA_I2; // key b: block all input if(iKey == 'b') { GUI_gl_block (mo, 1); // block GUI_cursor__ (mo, 1); // cursor wait } if(iKey == 'd') { gl_draw (mo, NULL); } if(iKey == 'r') { // reset zoom zoom = 1.; gl_draw (mo, NULL); } return 0; } /* //================================================================ int gl_idle (void *data) { //================================================================ // printf("."); // if(gl_stat == 0) { // gl_draw (UI_win_gl, NULL); // return 1; // } // if(GLB_pending()) return 1; // if(GUI_gl_pending()) return 1; // if(gtk_events_pending()) return 1; if(gl_stat == 1) { printf("gl_idle 1 -> 2\n"); // gtk_widget_map (UI_win_glArea); gl_stat = 2; // GUI_update__ (); // gl_draw (UI_win_gl, NULL); // g_signal_emit_by_name (UI_win_gl, "draw", 0,NULL); // gdk_window_end_paint (gtk_widget_get_window(UI_win_gl)); // gl_draw (UI_win_gl, NULL); // gtk_widget_map (UI_win_glArea); gl_draw (UI_win_gl, NULL); // gtk_widget_queue_resize (UI_win_gl); } return 1; // 0=remove, 1=keep } */ //================================================================ int gl_draw (MemObj *mo, void **data) { //================================================================ /// Redraw necessary. Redraw whole scene. /// GUI_DATA_EVENT =*(int*)data[0]=TYP_EventConfig|TYP_EventDraw /// GUI_DATA_DEVICE=*(int*)data[1]=TYP_DeviceScreen0 /// GUI_DATA_I1 =*(int*)data[2]=window-width (for event=TYP_EventConfig) /// GUI_DATA_I2 =*(int*)data[3]=window-height (for event=TYP_EventConfig) // int i1; GLfloat m[4][4]; printf("gl_draw stat=%d actBut=%d\n",gl_stat,actBut); if(data) { // internal draws: data=NULL if(GUI_DATA_EVENT == TYP_EventEnter) { printf(" enter gl-win, shift/ctrl/alt=%d\n",GUI_DATA_I1); } else if(GUI_DATA_EVENT == TYP_EventConfig) { wSizX = GUI_DATA_I1; wSizY = GUI_DATA_I2; if(gl_stat > 2) gl_stat = 2; // do not overwrite gl_stat=0 printf(" new siz %d %d\n",wSizX,wSizY); } } // activate GL GUI_gl_set_active (1, mo); if(gl_stat == 2) { // after config after reEnter gl_init_trackball (1); // set up trackball gl_init__ (); } // basic initialization if (gl_stat == 0) { gl_init_trackball (0); // set up trackball gl_init__ (); } // set backgrnd L_draw: glClearColor(.3,.4,.6,1); // hellblau glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); // set view trackball_persp (&cenPt, &zoom, quat, &mdlMax, &mdlMin); // draw all tst_surf2_draw (); // execute GL GUI_gl_set_active (0, mo); gl_stat = 3; return 0; } // EOF