#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <GL/glut.h>
GLenum rgb, doubleBuffer, windType;
int windX, windY;
int cursor;
#include "tkmap.c"
static void Init(void)
{
cursor = 0;
glutSetCursor(cursor);
glClearColor(0.0, 0.0, 0.0, 0.0);
glClearIndex(0.0);
}
static void Reshape(int width, int height)
{
windX = width;
windY = height;
glViewport(0, 0, windX, windY);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluOrtho2D(0, windX, 0, windY);
glMatrixMode(GL_MODELVIEW);
}
static void Key(unsigned char key, int x, int y)
{
switch (key) {
case 27:
exit(1);
case 32:
cursor++;
if (cursor > 19) {
cursor = 0;
}
glutSetCursor(cursor);
}
}
static void Draw(void)
{
glClear(GL_COLOR_BUFFER_BIT);
glBegin(GL_POLYGON);
SetColor(COLOR_BLACK);
glVertex2i(0, 0);
SetColor(COLOR_RED);
glVertex2i(windX, 0);
SetColor(COLOR_GREEN);
glVertex2i(windX, windY);
SetColor(COLOR_BLUE);
glVertex2i(0, windY);
glEnd();
glFlush();
if (doubleBuffer) {
glutSwapBuffers();
}
}
static GLenum Args(int argc, char **argv)
{
GLint i;
rgb = GL_TRUE;
doubleBuffer = GL_FALSE;
for (i = 1; i < argc; i++) {
if (strcmp(argv[i], "-ci") == 0) {
rgb = GL_FALSE;
} else if (strcmp(argv[i], "-rgb") == 0) {
rgb = GL_TRUE;
} else if (strcmp(argv[i], "-sb") == 0) {
doubleBuffer = GL_FALSE;
} else if (strcmp(argv[i], "-db") == 0) {
doubleBuffer = GL_TRUE;
} else {
printf("%s (Bad option).\n", argv[i]);
return GL_FALSE;
}
}
return GL_TRUE;
}
int main(int argc, char **argv)
{
glutInit(&argc, argv);
if (Args(argc, argv) == GL_FALSE) {
exit(1);
}
windX = 300;
windY = 300;
glutInitWindowPosition(0, 0); glutInitWindowSize( windX, windY);
windType = (rgb) ? GLUT_RGB : GLUT_INDEX;
windType |= (doubleBuffer) ? GLUT_DOUBLE : GLUT_SINGLE;
glutInitDisplayMode(windType);
if (glutCreateWindow("Cursor Test") == GL_FALSE) {
exit(1);
}
InitMap();
Init();
glutReshapeFunc(Reshape);
glutKeyboardFunc(Key);
glutDisplayFunc(Draw);
glutMainLoop();
return 0;
}