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-rw-r--r--tests/glfw/gears.c383
1 files changed, 0 insertions, 383 deletions
diff --git a/tests/glfw/gears.c b/tests/glfw/gears.c
deleted file mode 100644
index 01288414..00000000
--- a/tests/glfw/gears.c
+++ /dev/null
@@ -1,383 +0,0 @@
-/*
- * 3-D gear wheels. This program is in the public domain.
- *
- * Command line options:
- * -info print GL implementation information
- * -exit automatically exit after 30 seconds
- *
- *
- * Brian Paul
- *
- *
- * Marcus Geelnard:
- * - Conversion to GLFW
- * - Time based rendering (frame rate independent)
- * - Slightly modified camera that should work better for stereo viewing
- *
- *
- * Camilla Berglund:
- * - Removed FPS counter (this is not a benchmark)
- * - Added a few comments
- * - Enabled vsync
- */
-
-
-#include <math.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <GL/glfw.h>
-
-#ifndef M_PI
-#define M_PI 3.141592654
-#endif
-
-#ifdef EMSCRIPTEN
-#include <emscripten/emscripten.h>
-#endif
-
-/* The program exits when this is zero.
- */
-static int running = 1;
-
-/* If non-zero, the program exits after that many seconds
- */
-static int autoexit = 0;
-
-/**
-
- Draw a gear wheel. You'll probably want to call this function when
- building a display list since we do a lot of trig here.
-
- Input: inner_radius - radius of hole at center
- outer_radius - radius at center of teeth
- width - width of gear teeth - number of teeth
- tooth_depth - depth of tooth
-
- **/
-
-static void
-gear(GLfloat inner_radius, GLfloat outer_radius, GLfloat width,
- GLint teeth, GLfloat tooth_depth)
-{
- GLint i;
- GLfloat r0, r1, r2;
- GLfloat angle, da;
- GLfloat u, v, len;
-
- r0 = inner_radius;
- r1 = outer_radius - tooth_depth / 2.f;
- r2 = outer_radius + tooth_depth / 2.f;
-
- da = 2.f * (float) M_PI / teeth / 4.f;
-
- glShadeModel(GL_FLAT);
-
- glNormal3f(0.f, 0.f, 1.f);
-
- /* draw front face */
- glBegin(GL_QUAD_STRIP);
- for (i = 0; i <= teeth; i++) {
- angle = i * 2.f * (float) M_PI / teeth;
- glVertex3f(r0 * (float) cos(angle), r0 * (float) sin(angle), width * 0.5f);
- glVertex3f(r1 * (float) cos(angle), r1 * (float) sin(angle), width * 0.5f);
- if (i < teeth) {
- glVertex3f(r0 * (float) cos(angle), r0 * (float) sin(angle), width * 0.5f);
- glVertex3f(r1 * (float) cos(angle + 3 * da), r1 * (float) sin(angle + 3 * da), width * 0.5f);
- }
- }
- glEnd();
-
- /* draw front sides of teeth */
- glBegin(GL_QUADS);
- da = 2.f * (float) M_PI / teeth / 4.f;
- for (i = 0; i < teeth; i++) {
- angle = i * 2.f * (float) M_PI / teeth;
-
- glVertex3f(r1 * (float) cos(angle), r1 * (float) sin(angle), width * 0.5f);
- glVertex3f(r2 * (float) cos(angle + da), r2 * (float) sin(angle + da), width * 0.5f);
- glVertex3f(r2 * (float) cos(angle + 2 * da), r2 * (float) sin(angle + 2 * da), width * 0.5f);
- glVertex3f(r1 * (float) cos(angle + 3 * da), r1 * (float) sin(angle + 3 * da), width * 0.5f);
- }
- glEnd();
-
- glNormal3f(0.0, 0.0, -1.0);
-
- /* draw back face */
- glBegin(GL_QUAD_STRIP);
- for (i = 0; i <= teeth; i++) {
- angle = i * 2.f * (float) M_PI / teeth;
- glVertex3f(r1 * (float) cos(angle), r1 * (float) sin(angle), -width * 0.5f);
- glVertex3f(r0 * (float) cos(angle), r0 * (float) sin(angle), -width * 0.5f);
- if (i < teeth) {
- glVertex3f(r1 * (float) cos(angle + 3 * da), r1 * (float) sin(angle + 3 * da), -width * 0.5f);
- glVertex3f(r0 * (float) cos(angle), r0 * (float) sin(angle), -width * 0.5f);
- }
- }
- glEnd();
-
- /* draw back sides of teeth */
- glBegin(GL_QUADS);
- da = 2.f * (float) M_PI / teeth / 4.f;
- for (i = 0; i < teeth; i++) {
- angle = i * 2.f * (float) M_PI / teeth;
-
- glVertex3f(r1 * (float) cos(angle + 3 * da), r1 * (float) sin(angle + 3 * da), -width * 0.5f);
- glVertex3f(r2 * (float) cos(angle + 2 * da), r2 * (float) sin(angle + 2 * da), -width * 0.5f);
- glVertex3f(r2 * (float) cos(angle + da), r2 * (float) sin(angle + da), -width * 0.5f);
- glVertex3f(r1 * (float) cos(angle), r1 * (float) sin(angle), -width * 0.5f);
- }
- glEnd();
-
- /* draw outward faces of teeth */
- glBegin(GL_QUAD_STRIP);
- for (i = 0; i < teeth; i++) {
- angle = i * 2.f * (float) M_PI / teeth;
-
- glVertex3f(r1 * (float) cos(angle), r1 * (float) sin(angle), width * 0.5f);
- glVertex3f(r1 * (float) cos(angle), r1 * (float) sin(angle), -width * 0.5f);
- u = r2 * (float) cos(angle + da) - r1 * (float) cos(angle);
- v = r2 * (float) sin(angle + da) - r1 * (float) sin(angle);
- len = (float) sqrt(u * u + v * v);
- u /= len;
- v /= len;
- glNormal3f(v, -u, 0.0);
- glVertex3f(r2 * (float) cos(angle + da), r2 * (float) sin(angle + da), width * 0.5f);
- glVertex3f(r2 * (float) cos(angle + da), r2 * (float) sin(angle + da), -width * 0.5f);
- glNormal3f((float) cos(angle), (float) sin(angle), 0.f);
- glVertex3f(r2 * (float) cos(angle + 2 * da), r2 * (float) sin(angle + 2 * da), width * 0.5f);
- glVertex3f(r2 * (float) cos(angle + 2 * da), r2 * (float) sin(angle + 2 * da), -width * 0.5f);
- u = r1 * (float) cos(angle + 3 * da) - r2 * (float) cos(angle + 2 * da);
- v = r1 * (float) sin(angle + 3 * da) - r2 * (float) sin(angle + 2 * da);
- glNormal3f(v, -u, 0.f);
- glVertex3f(r1 * (float) cos(angle + 3 * da), r1 * (float) sin(angle + 3 * da), width * 0.5f);
- glVertex3f(r1 * (float) cos(angle + 3 * da), r1 * (float) sin(angle + 3 * da), -width * 0.5f);
- glNormal3f((float) cos(angle), (float) sin(angle), 0.f);
- }
-
- glVertex3f(r1 * (float) cos(0), r1 * (float) sin(0), width * 0.5f);
- glVertex3f(r1 * (float) cos(0), r1 * (float) sin(0), -width * 0.5f);
-
- glEnd();
-
- glShadeModel(GL_SMOOTH);
-
- /* draw inside radius cylinder */
- glBegin(GL_QUAD_STRIP);
- for (i = 0; i <= teeth; i++) {
- angle = i * 2.f * (float) M_PI / teeth;
- glNormal3f(-(float) cos(angle), -(float) sin(angle), 0.f);
- glVertex3f(r0 * (float) cos(angle), r0 * (float) sin(angle), -width * 0.5f);
- glVertex3f(r0 * (float) cos(angle), r0 * (float) sin(angle), width * 0.5f);
- }
- glEnd();
-
-}
-
-
-static GLfloat view_rotx = 20.f, view_roty = 30.f, view_rotz = 0.f;
-static GLint gear1, gear2, gear3;
-static GLfloat angle = 0.f;
-
-/* OpenGL draw function & timing */
-static void draw(void)
-{
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
- glPushMatrix();
- glRotatef(view_rotx, 1.0, 0.0, 0.0);
- glRotatef(view_roty, 0.0, 1.0, 0.0);
- glRotatef(view_rotz, 0.0, 0.0, 1.0);
-
- glPushMatrix();
- glTranslatef(-3.0, -2.0, 0.0);
- glRotatef(angle, 0.0, 0.0, 1.0);
- glCallList(gear1);
- glPopMatrix();
-
- glPushMatrix();
- glTranslatef(3.1f, -2.f, 0.f);
- glRotatef(-2.f * angle - 9.f, 0.f, 0.f, 1.f);
- glCallList(gear2);
- glPopMatrix();
-
- glPushMatrix();
- glTranslatef(-3.1f, 4.2f, 0.f);
- glRotatef(-2.f * angle - 25.f, 0.f, 0.f, 1.f);
- glCallList(gear3);
- glPopMatrix();
-
- glPopMatrix();
-}
-
-
-/* update animation parameters */
-static void animate(void)
-{
- angle = 100.f * (float) glfwGetTime();
-}
-
-
-/* change view angle, exit upon ESC */
-void GLFWCALL key( int k, int action )
-{
- if( action != GLFW_PRESS ) return;
-
- switch (k) {
- case 'Z':
- if( glfwGetKey( GLFW_KEY_LSHIFT ) )
- view_rotz -= 5.0;
- else
- view_rotz += 5.0;
- break;
- case GLFW_KEY_ESC:
- running = 0;
- break;
- case GLFW_KEY_UP:
- view_rotx += 5.0;
- break;
- case GLFW_KEY_DOWN:
- view_rotx -= 5.0;
- break;
- case GLFW_KEY_LEFT:
- view_roty += 5.0;
- break;
- case GLFW_KEY_RIGHT:
- view_roty -= 5.0;
- break;
- default:
- return;
- }
-}
-
-
-/* new window size */
-void GLFWCALL reshape( int width, int height )
-{
- GLfloat h = (GLfloat) height / (GLfloat) width;
- GLfloat xmax, znear, zfar;
-
- znear = 5.0f;
- zfar = 30.0f;
- xmax = znear * 0.5f;
-
- glViewport( 0, 0, (GLint) width, (GLint) height );
- glMatrixMode( GL_PROJECTION );
- glLoadIdentity();
- glFrustum( -xmax, xmax, -xmax*h, xmax*h, znear, zfar );
- glMatrixMode( GL_MODELVIEW );
- glLoadIdentity();
- glTranslatef( 0.0, 0.0, -20.0 );
-}
-
-
-/* program & OpenGL initialization */
-static void init(int argc, char *argv[])
-{
- static GLfloat pos[4] = {5.f, 5.f, 10.f, 0.f};
- static GLfloat red[4] = {0.8f, 0.1f, 0.f, 1.f};
- static GLfloat green[4] = {0.f, 0.8f, 0.2f, 1.f};
- static GLfloat blue[4] = {0.2f, 0.2f, 1.f, 1.f};
- GLint i;
-
- glLightfv(GL_LIGHT0, GL_POSITION, pos);
- glEnable(GL_CULL_FACE);
- glEnable(GL_LIGHTING);
- glEnable(GL_LIGHT0);
- glEnable(GL_DEPTH_TEST);
-
- /* make the gears */
- gear1 = glGenLists(1);
- glNewList(gear1, GL_COMPILE);
- glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, red);
- gear(1.f, 4.f, 1.f, 20, 0.7f);
- glEndList();
-
- gear2 = glGenLists(1);
- glNewList(gear2, GL_COMPILE);
- glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, green);
- gear(0.5f, 2.f, 2.f, 10, 0.7f);
- glEndList();
-
- gear3 = glGenLists(1);
- glNewList(gear3, GL_COMPILE);
- glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, blue);
- gear(1.3f, 2.f, 0.5f, 10, 0.7f);
- glEndList();
-
- glEnable(GL_NORMALIZE);
-
- for ( i=1; i<argc; i++ ) {
- if (strcmp(argv[i], "-info")==0) {
- printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
- printf("GL_VERSION = %s\n", (char *) glGetString(GL_VERSION));
- printf("GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR));
- printf("GL_EXTENSIONS = %s\n", (char *) glGetString(GL_EXTENSIONS));
- }
- else if ( strcmp(argv[i], "-exit")==0) {
- autoexit = 30;
- printf("Auto Exit after %i seconds.\n", autoexit );
- }
- }
-}
-
-void iteration(){
- // Draw gears
- draw();
-
- // Update animation
- animate();
-
- // Swap buffers
- glfwSwapBuffers();
-
- // Was the window closed?
- if( !glfwGetWindowParam( GLFW_OPENED ) )
- {
- running = 0;
- }
-}
-
-/* program entry */
-int main(int argc, char *argv[])
-{
- if( !glfwInit() )
- {
- fprintf( stderr, "Failed to initialize GLFW\n" );
- exit( EXIT_FAILURE );
- }
-
- if( !glfwOpenWindow( 300,300, 0,0,0,0, 16,0, GLFW_WINDOW ) )
- {
- fprintf( stderr, "Failed to open GLFW window\n" );
- glfwTerminate();
- exit( EXIT_FAILURE );
- }
-
- glfwSetWindowTitle( "Gears" );
- glfwEnable( GLFW_KEY_REPEAT );
- glfwSwapInterval( 1 );
-
- // Parse command-line options
- init(argc, argv);
-
- // Set callback functions
- glfwSetWindowSizeCallback( reshape );
- glfwSetKeyCallback( key );
-
-#ifdef EMSCRIPTEN
- emscripten_set_main_loop (iteration, 0, 1);
-#else
- // Main loop
- while( running )
- {
- iteration();
- }
-#endif
- // Terminate GLFW
- glfwTerminate();
-
- // Exit program
- exit( EXIT_SUCCESS );
-}
-
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