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added the timer demo

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git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@1100 7f0cb862-5218-0410-a997-914c9d46530a
This commit is contained in:
jtsiomb 2012-03-10 14:55:50 +00:00
parent 0c5025cc85
commit cf7613066d
3 changed files with 55 additions and 2 deletions
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1
.gitattributes vendored
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@ -126,6 +126,7 @@ freeglut/freeglut/progs/demos/subwin/Makefile.am -text
freeglut/freeglut/progs/demos/subwin/subwin.c -text
freeglut/freeglut/progs/demos/subwin/subwin.dsp -text
freeglut/freeglut/progs/demos/subwin/subwinStatic.dsp -text
freeglut/freeglut/progs/demos/timer/timer.c -text
freeglut/freeglut/src/Common/freeglut_callbacks.c svn_keywords=Author+Date+Id+Revision
freeglut/freeglut/src/Common/freeglut_cursor.c svn_keywords=Author+Date+Id+Revision
freeglut/freeglut/src/Common/freeglut_display.c svn_keywords=Author+Date+Id+Revision

3
freeglut/freeglut/CMakeLists.txt
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@ -219,5 +219,4 @@ ADD_DEMO(spaceball progs/demos/spaceball/spaceball.c
progs/demos/spaceball/vmath.c
progs/demos/spaceball/vmath.h)
ADD_DEMO(subwin progs/demos/subwin/subwin.c)
ADD_DEMO(timer progs/demos/timer/timer.c)

53
freeglut/freeglut/progs/demos/timer/timer.c Normal file
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@ -0,0 +1,53 @@
/* Timer demo
*
* Written by John Tsiombikas <nuclear@member.fsf.org>
*
* Demonstrate the use of glutTimerFunc, by changing the color of the
* framebuffer every (approximately) 1 sec.
*/
#include <stdio.h>
#include <GL/glut.h>
void disp(void);
void timer_func(int unused);
/* color index will be advanced every time the timer expires */
int cidx;
float color[][3] = {
{1, 0, 0},
{0, 1, 0},
{0, 0, 1},
{1, 1, 0},
{0, 1, 1},
{1, 0, 1}
};
int main(int argc, char **argv)
{
glutInit(&argc, argv);
glutInitWindowSize(128, 128);
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
glutCreateWindow("timer test");
glutDisplayFunc(disp);
glutMainLoop();
return 0;
}
void disp(void)
{
glClearColor(color[cidx][0], color[cidx][1], color[cidx][2], 1);
glClear(GL_COLOR_BUFFER_BIT);
/* set the timer callback and ask glut to call it in 1 second */
glutTimerFunc(1000, timer_func, 0);
glutSwapBuffers();
}
void timer_func(int unused)
{
/* advance the color index and trigger a redisplay */
cidx = (cidx + 1) % (sizeof color / sizeof *color);
glutPostRedisplay();
}