forked from bartvdbraak/blender
520 lines
16 KiB
C
520 lines
16 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
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* All rights reserved.
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*/
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/**
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* Copyright (C) 2001 NaN Technologies B.V.
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*
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* Simple test file for the GHOST library.
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* The OpenGL gear code is taken from the Qt sample code which,
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* in turn, is probably taken from somewhere as well.
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*/
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#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define FALSE 0
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#include "GHOST_C-api.h"
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#if defined(WIN32) || defined(__APPLE__)
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# ifdef WIN32
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# include <GL/gl.h>
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# include <windows.h>
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# else /* WIN32 */
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/* __APPLE__ is defined */
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# include <AGL/gl.h>
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# endif /* WIN32 */
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#else /* defined(WIN32) || defined(__APPLE__) */
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# include <GL/gl.h>
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#endif /* defined(WIN32) || defined(__APPLE__) */
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static void gearsTimerProc(GHOST_TimerTaskHandle task, GHOST_TUns64 time);
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int processEvent(GHOST_EventHandle hEvent, GHOST_TUserDataPtr userData);
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static GLfloat view_rotx = 20.0, view_roty = 30.0, view_rotz = 0.0;
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static GLfloat fAngle = 0.0;
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static int sExitRequested = 0;
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static GHOST_SystemHandle shSystem = NULL;
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static GHOST_WindowHandle sMainWindow = NULL;
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static GHOST_WindowHandle sSecondaryWindow = NULL;
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static GHOST_TStandardCursor sCursor = GHOST_kStandardCursorFirstCursor;
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static GHOST_WindowHandle sFullScreenWindow = NULL;
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static GHOST_TimerTaskHandle sTestTimer;
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static GHOST_TimerTaskHandle sGearsTimer;
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static void testTimerProc(GHOST_TimerTaskHandle task, GHOST_TUns64 time)
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{
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printf("timer1, time=%d\n", (int)time);
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}
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static void gearGL(
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GLfloat inner_radius, GLfloat outer_radius, GLfloat width, GLint teeth, GLfloat tooth_depth)
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{
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GLint i;
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GLfloat r0, r1, r2;
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GLfloat angle, da;
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GLfloat u, v, len;
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const double pi = 3.14159264;
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r0 = inner_radius;
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r1 = (float)(outer_radius - tooth_depth / 2.0);
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r2 = (float)(outer_radius + tooth_depth / 2.0);
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da = (float)(2.0 * pi / teeth / 4.0);
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glShadeModel(GL_FLAT);
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glNormal3f(0.0, 0.0, 1.0);
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/* draw front face */
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glBegin(GL_QUAD_STRIP);
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for (i = 0; i <= teeth; i++) {
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angle = (float)(i * 2.0 * pi / teeth);
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glVertex3f((float)(r0 * cos(angle)), (float)(r0 * sin(angle)), (float)(width * 0.5));
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glVertex3f((float)(r1 * cos(angle)), (float)(r1 * sin(angle)), (float)(width * 0.5));
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glVertex3f((float)(r0 * cos(angle)), (float)(r0 * sin(angle)), (float)(width * 0.5));
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glVertex3f((float)(r1 * cos(angle + 3 * da)),
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(float)(r1 * sin(angle + 3 * da)),
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(float)(width * 0.5));
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}
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glEnd();
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/* draw front sides of teeth */
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glBegin(GL_QUADS);
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da = (float)(2.0 * pi / teeth / 4.0);
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for (i = 0; i < teeth; i++) {
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angle = (float)(i * 2.0 * pi / teeth);
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glVertex3f((float)(r1 * cos(angle)), (float)(r1 * sin(angle)), (float)(width * 0.5));
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glVertex3f((float)(r2 * cos(angle + da)), (float)(r2 * sin(angle + da)), (float)(width * 0.5));
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glVertex3f((float)(r2 * cos(angle + 2 * da)),
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(float)(r2 * sin(angle + 2 * da)),
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(float)(width * 0.5));
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glVertex3f((float)(r1 * cos(angle + 3 * da)),
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(float)(r1 * sin(angle + 3 * da)),
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(float)(width * 0.5));
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}
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glEnd();
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glNormal3f(0.0, 0.0, -1.0);
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/* draw back face */
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glBegin(GL_QUAD_STRIP);
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for (i = 0; i <= teeth; i++) {
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angle = (float)(i * 2.0 * pi / teeth);
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glVertex3f((float)(r1 * cos(angle)), (float)(r1 * sin(angle)), (float)(-width * 0.5));
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glVertex3f((float)(r0 * cos(angle)), (float)(r0 * sin(angle)), (float)(-width * 0.5));
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glVertex3f((float)(r1 * cos(angle + 3 * da)),
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(float)(r1 * sin(angle + 3 * da)),
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(float)(-width * 0.5));
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glVertex3f((float)(r0 * cos(angle)), (float)(r0 * sin(angle)), (float)(-width * 0.5));
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}
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glEnd();
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/* draw back sides of teeth */
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glBegin(GL_QUADS);
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da = (float)(2.0 * pi / teeth / 4.0);
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for (i = 0; i < teeth; i++) {
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angle = (float)(i * 2.0 * pi / teeth);
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glVertex3f((float)(r1 * cos(angle + 3 * da)),
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(float)(r1 * sin(angle + 3 * da)),
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(float)(-width * 0.5));
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glVertex3f((float)(r2 * cos(angle + 2 * da)),
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(float)(r2 * sin(angle + 2 * da)),
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(float)(-width * 0.5));
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glVertex3f(
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(float)(r2 * cos(angle + da)), (float)(r2 * sin(angle + da)), (float)(-width * 0.5));
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glVertex3f((float)(r1 * cos(angle)), (float)(r1 * sin(angle)), (float)(-width * 0.5));
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}
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glEnd();
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/* draw outward faces of teeth */
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glBegin(GL_QUAD_STRIP);
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for (i = 0; i < teeth; i++) {
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angle = (float)(i * 2.0 * pi / teeth);
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glVertex3f((float)(r1 * cos(angle)), (float)(r1 * sin(angle)), (float)(width * 0.5));
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glVertex3f((float)(r1 * cos(angle)), (float)(r1 * sin(angle)), (float)(-width * 0.5));
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u = (float)(r2 * cos(angle + da) - r1 * cos(angle));
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v = (float)(r2 * sin(angle + da) - r1 * sin(angle));
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len = (float)(sqrt(u * u + v * v));
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u /= len;
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v /= len;
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glNormal3f(v, -u, 0.0);
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glVertex3f((float)(r2 * cos(angle + da)), (float)(r2 * sin(angle + da)), (float)(width * 0.5));
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glVertex3f(
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(float)(r2 * cos(angle + da)), (float)(r2 * sin(angle + da)), (float)(-width * 0.5));
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glNormal3f((float)(cos(angle)), (float)(sin(angle)), 0.0);
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glVertex3f((float)(r2 * cos(angle + 2 * da)),
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(float)(r2 * sin(angle + 2 * da)),
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(float)(width * 0.5));
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glVertex3f((float)(r2 * cos(angle + 2 * da)),
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(float)(r2 * sin(angle + 2 * da)),
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(float)(-width * 0.5));
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u = (float)(r1 * cos(angle + 3 * da) - r2 * cos(angle + 2 * da));
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v = (float)(r1 * sin(angle + 3 * da) - r2 * sin(angle + 2 * da));
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glNormal3f(v, -u, 0.0);
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glVertex3f((float)(r1 * cos(angle + 3 * da)),
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(float)(r1 * sin(angle + 3 * da)),
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(float)(width * 0.5));
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glVertex3f((float)(r1 * cos(angle + 3 * da)),
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(float)(r1 * sin(angle + 3 * da)),
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(float)(-width * 0.5));
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glNormal3f((float)(cos(angle)), (float)(sin(angle)), 0.0);
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}
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glVertex3f((float)(r1 * cos(0.0)), (float)(r1 * sin(0.0)), (float)(width * 0.5));
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glVertex3f((float)(r1 * cos(0.0)), (float)(r1 * sin(0.0)), (float)(-width * 0.5));
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glEnd();
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glShadeModel(GL_SMOOTH);
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/* draw inside radius cylinder */
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glBegin(GL_QUAD_STRIP);
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for (i = 0; i <= teeth; i++) {
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angle = (float)(i * 2.0 * pi / teeth);
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glNormal3f((float)(-cos(angle)), (float)(-sin(angle)), 0.0);
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glVertex3f((float)(r0 * cos(angle)), (float)(r0 * sin(angle)), (float)(-width * 0.5));
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glVertex3f((float)(r0 * cos(angle)), (float)(r0 * sin(angle)), (float)(width * 0.5));
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}
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glEnd();
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}
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static void drawGearGL(int id)
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{
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static GLfloat pos[4] = {5.0f, 5.0f, 10.0f, 1.0f};
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static GLfloat ared[4] = {0.8f, 0.1f, 0.0f, 1.0f};
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static GLfloat agreen[4] = {0.0f, 0.8f, 0.2f, 1.0f};
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static GLfloat ablue[4] = {0.2f, 0.2f, 1.0f, 1.0f};
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glLightfv(GL_LIGHT0, GL_POSITION, pos);
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glEnable(GL_CULL_FACE);
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glEnable(GL_LIGHTING);
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glEnable(GL_LIGHT0);
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glEnable(GL_DEPTH_TEST);
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switch (id) {
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case 1:
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glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, ared);
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gearGL(1.0f, 4.0f, 1.0f, 20, 0.7f);
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break;
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case 2:
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glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, agreen);
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gearGL(0.5f, 2.0f, 2.0f, 10, 0.7f);
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break;
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case 3:
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glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, ablue);
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gearGL(1.3f, 2.0f, 0.5f, 10, 0.7f);
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break;
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default:
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break;
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}
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glEnable(GL_NORMALIZE);
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}
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static void drawGL(void)
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{
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glPushMatrix();
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glRotatef(view_rotx, 1.0, 0.0, 0.0);
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glRotatef(view_roty, 0.0, 1.0, 0.0);
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glRotatef(view_rotz, 0.0, 0.0, 1.0);
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glPushMatrix();
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glTranslatef(-3.0, -2.0, 0.0);
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glRotatef(fAngle, 0.0, 0.0, 1.0);
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drawGearGL(1);
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glPopMatrix();
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glPushMatrix();
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glTranslatef(3.1f, -2.0f, 0.0f);
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glRotatef((float)(-2.0 * fAngle - 9.0), 0.0, 0.0, 1.0);
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drawGearGL(2);
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glPopMatrix();
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glPushMatrix();
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glTranslatef(-3.1f, 2.2f, -1.8f);
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glRotatef(90.0f, 1.0f, 0.0f, 0.0f);
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glRotatef((float)(2.0 * fAngle - 2.0), 0.0, 0.0, 1.0);
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drawGearGL(3);
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glPopMatrix();
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glPopMatrix();
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}
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static void setViewPortGL(GHOST_WindowHandle hWindow)
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{
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GHOST_RectangleHandle hRect = NULL;
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GLfloat w, h;
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GHOST_ActivateWindowDrawingContext(hWindow);
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hRect = GHOST_GetClientBounds(hWindow);
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w = (float)GHOST_GetWidthRectangle(hRect) / (float)GHOST_GetHeightRectangle(hRect);
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h = 1.0;
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glViewport(0, 0, GHOST_GetWidthRectangle(hRect), GHOST_GetHeightRectangle(hRect));
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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glFrustum(-w, w, -h, h, 5.0, 60.0);
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/* glOrtho(0, bnds.getWidth(), 0, bnds.getHeight(), -10, 10); */
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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glTranslatef(0.0, 0.0, -40.0);
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glClearColor(.2f, 0.0f, 0.0f, 0.0f);
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glClear(GL_COLOR_BUFFER_BIT);
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GHOST_DisposeRectangle(hRect);
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}
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int processEvent(GHOST_EventHandle hEvent, GHOST_TUserDataPtr userData)
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{
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int handled = 1;
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int cursor;
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int visibility;
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GHOST_TEventKeyData *keyData = NULL;
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GHOST_TEventWheelData *wheelData = NULL;
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GHOST_DisplaySetting setting;
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GHOST_WindowHandle window = GHOST_GetEventWindow(hEvent);
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switch (GHOST_GetEventType(hEvent)) {
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#if 0
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case GHOST_kEventUnknown:
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break;
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case GHOST_kEventCursorButton:
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break;
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case GHOST_kEventCursorMove:
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break;
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#endif
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case GHOST_kEventWheel: {
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wheelData = (GHOST_TEventWheelData *)GHOST_GetEventData(hEvent);
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if (wheelData->z > 0) {
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view_rotz += 5.f;
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}
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else {
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view_rotz -= 5.f;
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}
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} break;
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case GHOST_kEventKeyUp:
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break;
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case GHOST_kEventKeyDown: {
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keyData = (GHOST_TEventKeyData *)GHOST_GetEventData(hEvent);
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switch (keyData->key) {
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case GHOST_kKeyC: {
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cursor = sCursor;
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cursor++;
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if (cursor >= GHOST_kStandardCursorNumCursors) {
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cursor = GHOST_kStandardCursorFirstCursor;
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}
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sCursor = (GHOST_TStandardCursor)cursor;
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GHOST_SetCursorShape(window, sCursor);
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} break;
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case GHOST_kKeyF:
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if (!GHOST_GetFullScreen(shSystem)) {
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/* Begin fullscreen mode */
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setting.bpp = 24;
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setting.frequency = 85;
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setting.xPixels = 640;
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setting.yPixels = 480;
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/*
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* setting.bpp = 16;
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* setting.frequency = 75;
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* setting.xPixels = 640;
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* setting.yPixels = 480;
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*/
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sFullScreenWindow = GHOST_BeginFullScreen(shSystem,
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&setting,
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FALSE /* stereo flag */);
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}
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else {
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GHOST_EndFullScreen(shSystem);
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sFullScreenWindow = 0;
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}
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break;
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case GHOST_kKeyH: {
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visibility = GHOST_GetCursorVisibility(window);
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GHOST_SetCursorVisibility(window, !visibility);
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} break;
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case GHOST_kKeyQ:
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if (GHOST_GetFullScreen(shSystem)) {
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GHOST_EndFullScreen(shSystem);
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sFullScreenWindow = 0;
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}
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sExitRequested = 1;
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case GHOST_kKeyT:
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if (!sTestTimer) {
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sTestTimer = GHOST_InstallTimer(shSystem, 0, 1000, testTimerProc, NULL);
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}
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else {
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GHOST_RemoveTimer(shSystem, sTestTimer);
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sTestTimer = 0;
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}
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break;
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case GHOST_kKeyW: {
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if (sMainWindow) {
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char *title = GHOST_GetTitle(sMainWindow);
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char *ntitle = malloc(strlen(title) + 2);
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sprintf(ntitle, "%s-", title);
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GHOST_SetTitle(sMainWindow, ntitle);
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free(ntitle);
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free(title);
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}
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} break;
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default:
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break;
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}
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} break;
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case GHOST_kEventWindowClose: {
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GHOST_WindowHandle window2 = GHOST_GetEventWindow(hEvent);
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if (window2 == sMainWindow) {
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sExitRequested = 1;
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}
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else {
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if (sGearsTimer) {
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GHOST_RemoveTimer(shSystem, sGearsTimer);
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sGearsTimer = 0;
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}
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GHOST_DisposeWindow(shSystem, window2);
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}
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} break;
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case GHOST_kEventWindowActivate:
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handled = 0;
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break;
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case GHOST_kEventWindowDeactivate:
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handled = 0;
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break;
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case GHOST_kEventWindowUpdate: {
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GHOST_WindowHandle window2 = GHOST_GetEventWindow(hEvent);
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if (!GHOST_ValidWindow(shSystem, window2))
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break;
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setViewPortGL(window2);
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drawGL();
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GHOST_SwapWindowBuffers(window2);
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} break;
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default:
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handled = 0;
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break;
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}
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return handled;
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}
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int main(int argc, char **argv)
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{
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GHOST_GLSettings glSettings = {0};
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char *title1 = "gears - main window";
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char *title2 = "gears - secondary window";
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GHOST_EventConsumerHandle consumer = GHOST_CreateEventConsumer(processEvent, NULL);
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/* Create the system */
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shSystem = GHOST_CreateSystem();
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GHOST_AddEventConsumer(shSystem, consumer);
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if (shSystem) {
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/* Create the main window */
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sMainWindow = GHOST_CreateWindow(shSystem,
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NULL,
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title1,
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10,
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64,
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320,
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200,
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GHOST_kWindowStateNormal,
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false,
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GHOST_kDrawingContextTypeOpenGL,
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glSettings);
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if (!sMainWindow) {
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printf("could not create main window\n");
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exit(-1);
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}
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/* Create a secondary window */
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sSecondaryWindow = GHOST_CreateWindow(shSystem,
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NULL,
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title2,
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340,
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64,
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320,
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200,
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GHOST_kWindowStateNormal,
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false,
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GHOST_kDrawingContextTypeOpenGL,
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glSettings);
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if (!sSecondaryWindow) {
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printf("could not create secondary window\n");
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exit(-1);
|
|
}
|
|
|
|
/* Install a timer to have the gears running */
|
|
sGearsTimer = GHOST_InstallTimer(shSystem, 0, 10, gearsTimerProc, sMainWindow);
|
|
|
|
/* Enter main loop */
|
|
while (!sExitRequested) {
|
|
if (!GHOST_ProcessEvents(shSystem, false)) {
|
|
#ifdef WIN32
|
|
/* If there were no events, be nice to other applications */
|
|
Sleep(10);
|
|
#endif
|
|
}
|
|
GHOST_DispatchEvents(shSystem);
|
|
}
|
|
}
|
|
|
|
/* Dispose windows */
|
|
if (GHOST_ValidWindow(shSystem, sMainWindow)) {
|
|
GHOST_DisposeWindow(shSystem, sMainWindow);
|
|
}
|
|
if (GHOST_ValidWindow(shSystem, sSecondaryWindow)) {
|
|
GHOST_DisposeWindow(shSystem, sSecondaryWindow);
|
|
}
|
|
|
|
/* Dispose the system */
|
|
GHOST_DisposeSystem(shSystem);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void gearsTimerProc(GHOST_TimerTaskHandle hTask, GHOST_TUns64 time)
|
|
{
|
|
GHOST_WindowHandle hWindow = NULL;
|
|
fAngle += 2.0;
|
|
view_roty += 1.0;
|
|
hWindow = (GHOST_WindowHandle)GHOST_GetTimerTaskUserData(hTask);
|
|
if (GHOST_GetFullScreen(shSystem)) {
|
|
/* Running full screen */
|
|
GHOST_InvalidateWindow(sFullScreenWindow);
|
|
}
|
|
else {
|
|
if (GHOST_ValidWindow(shSystem, hWindow)) {
|
|
GHOST_InvalidateWindow(hWindow);
|
|
}
|
|
}
|
|
}
|