+/*
+ * FreeGLUT Shapes Demo
+ *
+ * Written by Nigel Stewart November 2003
+ *
+ * This program is test harness for the sphere, cone
+ * and torus shapes in FreeGLUT.
+ *
+ * Spinning wireframe and smooth shaded shapes are
+ * displayed until the ESC or q key is pressed. The
+ * number of geometry stacks and slices can be adjusted
+ * using the + and - keys.
+ */
+
#include <GL/freeglut.h>
-#include <stdio.h>
#include <stdlib.h>
-#include <math.h>
static int slices = 16;
static int stacks = 16;
+/* GLUT callback Handlers */
+
static void
-reshape(int width, int height)
+resize(int width, int height)
{
- float ar;
-
- glViewport( 0, 0, width, height);
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- ar = (float) width / (float) height;
- glFrustum ( -ar, ar, -1.0, 1.0, 2.0, 100.0);
-
- glMatrixMode(GL_MODELVIEW) ;
- glLoadIdentity() ;
+ const float ar = (float) width / (float) height;
+
+ glViewport(0, 0, width, height);
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ glFrustum(-ar, ar, -1.0, 1.0, 2.0, 100.0);
+
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity() ;
}
static void
display(void)
{
- float t = glutGet(GLUT_ELAPSED_TIME) / 1000.0;
- float a = t*90.0;
-
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
- glPushMatrix();
- glTranslatef(-2.4,1.2,-6);
- glRotatef(60,1,0,0);
- glRotatef(a,0,0,1);
- glColor3f(1,0,0);
- glutSolidSphere(1,slices,stacks);
- glPopMatrix();
-
- glPushMatrix();
- glTranslatef(0,1.2,-6);
- glRotatef(60,1,0,0);
- glRotatef(a,0,0,1);
- glColor3f(1,0,0);
- glutSolidCone(1,1,slices,stacks);
- glPopMatrix();
-
- glPushMatrix();
- glTranslatef(2.4,1.2,-6);
- glRotatef(60,1,0,0);
- glRotatef(a,0,0,1);
- glColor3f(1,0,0);
- glutSolidTorus(0.2,0.8,slices,stacks);
- glPopMatrix();
-
- glPushMatrix();
- glTranslatef(-2.4,-1.2,-6);
- glRotatef(60,1,0,0);
- glRotatef(a,0,0,1);
- glColor3f(1,0,0);
- glutWireSphere(1,slices,stacks);
- glPopMatrix();
-
- glPushMatrix();
- glTranslatef(0,-1.2,-6);
- glRotatef(60,1,0,0);
- glRotatef(a,0,0,1);
- glColor3f(1,0,0);
- glutWireCone(1,1,slices,stacks);
- glPopMatrix();
-
- glPushMatrix();
- glTranslatef(2.4,-1.2,-6);
- glRotatef(60,1,0,0);
- glRotatef(a,0,0,1);
- glColor3f(1,0,0);
- glutWireTorus(0.2,0.8,slices,stacks);
- glPopMatrix();
-
- glutSwapBuffers();
+ const double t = glutGet(GLUT_ELAPSED_TIME) / 1000.0;
+ const double a = t*90.0;
+
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+ glColor3d(1,0,0);
+
+ glPushMatrix();
+ glTranslated(-2.4,1.2,-6);
+ glRotated(60,1,0,0);
+ glRotated(a,0,0,1);
+ glutSolidSphere(1,slices,stacks);
+ glPopMatrix();
+
+ glPushMatrix();
+ glTranslated(0,1.2,-6);
+ glRotated(60,1,0,0);
+ glRotated(a,0,0,1);
+ glutSolidCone(1,1,slices,stacks);
+ glPopMatrix();
+
+ glPushMatrix();
+ glTranslated(2.4,1.2,-6);
+ glRotated(60,1,0,0);
+ glRotated(a,0,0,1);
+ glutSolidTorus(0.2,0.8,slices,stacks);
+ glPopMatrix();
+
+ glPushMatrix();
+ glTranslated(-2.4,-1.2,-6);
+ glRotated(60,1,0,0);
+ glRotated(a,0,0,1);
+ glutWireSphere(1,slices,stacks);
+ glPopMatrix();
+
+ glPushMatrix();
+ glTranslated(0,-1.2,-6);
+ glRotated(60,1,0,0);
+ glRotated(a,0,0,1);
+ glutWireCone(1,1,slices,stacks);
+ glPopMatrix();
+
+ glPushMatrix();
+ glTranslated(2.4,-1.2,-6);
+ glRotated(60,1,0,0);
+ glRotated(a,0,0,1);
+ glutWireTorus(0.2,0.8,slices,stacks);
+ glPopMatrix();
+
+ glutSwapBuffers();
}
static void
key(unsigned char key, int x, int y)
{
- switch (key) {
- case 27 :
- case 'q':
- exit(0);
- break;
-
- case '+':
- slices++;
- stacks++;
- break;
-
- case '-':
- slices--;
- stacks--;
- break;
- }
-
- glutPostRedisplay();
+ switch (key)
+ {
+ case 27 :
+ case 'q':
+ exit(0);
+ break;
+
+ case '+':
+ slices++;
+ stacks++;
+ break;
+
+ case '-':
+ if (slices>3 && stacks>3)
+ {
+ slices--;
+ stacks--;
+ }
+ break;
+ }
+
+ glutPostRedisplay();
}
-void
-idle()
+static void
+idle(void)
{
- glutPostRedisplay();
+ glutPostRedisplay();
}
-GLfloat light_ambient[] = { 0.0, 0.0, 0.0, 1.0 };
-GLfloat light_diffuse[] = { 1.0, 1.0, 1.0, 1.0 };
-GLfloat light_specular[] = { 1.0, 1.0, 1.0, 1.0 };
-GLfloat light_position[] = { 2.0, 5.0, 5.0, 0.0 };
+const GLfloat light_ambient[] = { 0.0f, 0.0f, 0.0f, 1.0f };
+const GLfloat light_diffuse[] = { 1.0f, 1.0f, 1.0f, 1.0f };
+const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
+const GLfloat light_position[] = { 2.0f, 5.0f, 5.0f, 0.0f };
-GLfloat mat_ambient[] = { 0.7, 0.7, 0.7, 1.0 };
-GLfloat mat_diffuse[] = { 0.8, 0.8, 0.8, 1.0 };
-GLfloat mat_specular[] = { 1.0, 1.0, 1.0, 1.0 };
-GLfloat high_shininess[] = { 100.0 };
+const GLfloat mat_ambient[] = { 0.7f, 0.7f, 0.7f, 1.0f };
+const GLfloat mat_diffuse[] = { 0.8f, 0.8f, 0.8f, 1.0f };
+const GLfloat mat_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
+const GLfloat high_shininess[] = { 100.0f };
+
+/* Program entry point */
int
main(int argc, char *argv[])
{
- glutInit(&argc, argv);
- glutInitWindowSize(640,480);
- glutInitWindowPosition (40,40);
- glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
+ glutInit(&argc, argv);
+ glutInitWindowSize(640,480);
+ glutInitWindowPosition (40,40);
+ glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
- glutCreateWindow("FreeGLUT Shapes");
+ glutCreateWindow("FreeGLUT Shapes");
- glutReshapeFunc(reshape);
- glutDisplayFunc(display);
- glutKeyboardFunc(key);
- glutIdleFunc(idle);
+ glutReshapeFunc(resize);
+ glutDisplayFunc(display);
+ glutKeyboardFunc(key);
+ glutIdleFunc(idle);
- glClearColor(1,1,1,1);
- glEnable(GL_CULL_FACE);
+ glClearColor(1,1,1,1);
+ glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
glEnable(GL_DEPTH_TEST);
glEnable(GL_LIGHT0);
glEnable(GL_NORMALIZE);
glEnable(GL_COLOR_MATERIAL);
- glEnable(GL_LIGHTING);
+ glEnable(GL_LIGHTING);
glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);
- glutMainLoop();
+ glutMainLoop();
- return EXIT_SUCCESS;
+ return EXIT_SUCCESS;
}
+
projects / freeglut / blobdiff