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-rw-r--r--tests/glfw/wave.c399
1 files changed, 0 insertions, 399 deletions
diff --git a/tests/glfw/wave.c b/tests/glfw/wave.c
deleted file mode 100644
index 67f516cc..00000000
--- a/tests/glfw/wave.c
+++ /dev/null
@@ -1,399 +0,0 @@
-/*****************************************************************************
- * Wave Simulation in OpenGL
- * (C) 2002 Jakob Thomsen
- * http://home.in.tum.de/~thomsen
- * Modified for GLFW by Sylvain Hellegouarch - sh@programmationworld.com
- * Modified for variable frame rate by Marcus Geelnard
- * 2003-Jan-31: Minor cleanups and speedups / MG
- *****************************************************************************/
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <math.h>
-#include <GL/glfw.h>
-
-#ifndef M_PI
- #define M_PI 3.1415926535897932384626433832795
-#endif
-
-/* Maximum delta T to allow for differential calculations */
-#define MAX_DELTA_T 0.01
-
-/* Animation speed (10.0 looks good) */
-#define ANIMATION_SPEED 10.0
-
-
-GLfloat alpha = 210.0f, beta = -70.0f;
-GLfloat zoom = 2.0f;
-
-int running = 1;
-
-struct Vertex
-{
- GLfloat x,y,z;
- GLfloat r,g,b;
-};
-
-#define GRIDW 50
-#define GRIDH 50
-#define VERTEXNUM (GRIDW*GRIDH)
-
-#define QUADW (GRIDW-1)
-#define QUADH (GRIDH-1)
-#define QUADNUM (QUADW*QUADH)
-
-GLuint quad[4*QUADNUM];
-struct Vertex vertex[VERTEXNUM];
-
-/* The grid will look like this:
- *
- * 3 4 5
- * *---*---*
- * | | |
- * | 0 | 1 |
- * | | |
- * *---*---*
- * 0 1 2
- */
-
-void initVertices( void )
-{
- int x,y,p;
-
- /* place the vertices in a grid */
- for(y=0;y<GRIDH;y++)
- for(x=0;x<GRIDW;x++)
- {
- p = y*GRIDW + x;
-
- //vertex[p].x = (-GRIDW/2)+x+sin(2.0*M_PI*(double)y/(double)GRIDH);
- //vertex[p].y = (-GRIDH/2)+y+cos(2.0*M_PI*(double)x/(double)GRIDW);
- vertex[p].x = (GLfloat)(x-GRIDW/2)/(GLfloat)(GRIDW/2);
- vertex[p].y = (GLfloat)(y-GRIDH/2)/(GLfloat)(GRIDH/2);
- vertex[p].z = 0;//sin(d*M_PI);
- //vertex[p].r = (GLfloat)x/(GLfloat)GRIDW;
- //vertex[p].g = (GLfloat)y/(GLfloat)GRIDH;
- //vertex[p].b = 1.0-((GLfloat)x/(GLfloat)GRIDW+(GLfloat)y/(GLfloat)GRIDH)/2.0;
- if((x%4<2)^(y%4<2))
- {
- vertex[p].r = 0.0;
- }
- else
- {
- vertex[p].r=1.0;
- }
-
- vertex[p].g = (GLfloat)y/(GLfloat)GRIDH;
- vertex[p].b = 1.f-((GLfloat)x/(GLfloat)GRIDW+(GLfloat)y/(GLfloat)GRIDH)/2.f;
- }
-
- for(y=0;y<QUADH;y++)
- for(x=0;x<QUADW;x++)
- {
- p = 4*(y*QUADW + x);
-
- /* first quad */
- quad[p+0] = y *GRIDW+x; /* some point */
- quad[p+1] = y *GRIDW+x+1; /* neighbor at the right side */
- quad[p+2] = (y+1)*GRIDW+x+1; /* upper right neighbor */
- quad[p+3] = (y+1)*GRIDW+x; /* upper neighbor */
- }
-}
-
-double dt;
-double p[GRIDW][GRIDH];
-double vx[GRIDW][GRIDH], vy[GRIDW][GRIDH];
-double ax[GRIDW][GRIDH], ay[GRIDW][GRIDH];
-
-
-
-void initSurface( void )
-{
- int x, y;
- double dx, dy, d;
-
- for(y = 0; y<GRIDH; y++)
- {
- for(x = 0; x<GRIDW; x++)
- {
- dx = (double)(x-GRIDW/2);
- dy = (double)(y-GRIDH/2);
- d = sqrt( dx*dx + dy*dy );
- if(d < 0.1 * (double)(GRIDW/2))
- {
- d = d * 10.0;
- p[x][y] = -cos(d * (M_PI / (double)(GRIDW * 4))) * 100.0;
- }
- else
- {
- p[x][y] = 0.0;
- }
- vx[x][y] = 0.0;
- vy[x][y] = 0.0;
- }
- }
-}
-
-
-/* Draw view */
-void draw_screen( void )
-{
- /* Clear the color and depth buffers. */
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
- /* We don't want to modify the projection matrix. */
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
-
- /* Move back. */
- glTranslatef(0.0, 0.0, -zoom);
- /* Rotate the view */
- glRotatef(beta, 1.0, 0.0, 0.0);
- glRotatef(alpha, 0.0, 0.0, 1.0);
-
- //glDrawArrays(GL_POINTS,0,VERTEXNUM); /* Points only */
- glDrawElements(GL_QUADS, 4*QUADNUM, GL_UNSIGNED_INT, quad);
- //glDrawElements(GL_LINES, QUADNUM, GL_UNSIGNED_INT, quad);
-
- glfwSwapBuffers();
-}
-
-
-/* Initialize OpenGL */
-void setup_opengl( void )
-{
- /* Our shading model--Gouraud (smooth). */
- glShadeModel(GL_SMOOTH);
-
- /* Culling. */
- //glCullFace(GL_BACK);
- //glFrontFace(GL_CCW);
- //glEnable(GL_CULL_FACE);
-
- /* Switch on the z-buffer. */
- glEnable(GL_DEPTH_TEST);
-
- glEnableClientState(GL_VERTEX_ARRAY);
- glEnableClientState(GL_COLOR_ARRAY);
- glVertexPointer(3/*3 components per vertex (x,y,z)*/, GL_FLOAT, sizeof(struct Vertex), vertex);
- glColorPointer(3/*3 components per vertex (r,g,b)*/, GL_FLOAT, sizeof(struct Vertex), &vertex[0].r); //Pointer to the first color
- glPointSize(2.0);
-
- /* Background color is black. */
- glClearColor(0, 0, 0, 0);
-}
-
-
-/* Modify the height of each vertex according to the pressure. */
-void adjustGrid( void )
-{
- int pos;
- int x, y;
-
- for(y = 0; y<GRIDH; y++)
- {
- for(x = 0; x<GRIDW; x++)
- {
- pos = y*GRIDW + x;
- vertex[pos].z = (float) (p[x][y]*(1.0/50.0));
- }
- }
-}
-
-
-/* Calculate wave propagation */
-void calc( void )
-{
- int x, y, x2, y2;
- double time_step = dt * ANIMATION_SPEED;
-
- /* compute accelerations */
- for(x = 0; x < GRIDW; x++)
- {
- x2 = (x + 1) % GRIDW;
- for(y = 0; y < GRIDH; y++)
- {
- ax[x][y] = p[x][y] - p[x2][y];
- }
- }
-
- for(y = 0; y < GRIDH;y++)
- {
- y2 = (y + 1) % GRIDH;
- for(x = 0; x < GRIDW; x++)
- {
- ay[x][y] = p[x][y] - p[x][y2];
- }
- }
-
- /* compute speeds */
- for(x = 0; x < GRIDW; x++)
- {
- for(y = 0; y < GRIDH; y++)
- {
- vx[x][y] = vx[x][y] + ax[x][y] * time_step;
- vy[x][y] = vy[x][y] + ay[x][y] * time_step;
- }
- }
-
- /* compute pressure */
- for(x = 1; x < GRIDW; x++)
- {
- x2 = x - 1;
- for(y = 1; y < GRIDH; y++)
- {
- y2 = y - 1;
- p[x][y] = p[x][y] + (vx[x2][y] - vx[x][y] + vy[x][y2] - vy[x][y]) * time_step;
- }
- }
-}
-
-
-/* Handle key strokes */
-void GLFWCALL handle_key_down(int key, int action)
-{
- if( action != GLFW_PRESS )
- {
- return;
- }
-
- switch(key) {
- case GLFW_KEY_ESC:
- running = 0;
- break;
- case GLFW_KEY_SPACE:
- initSurface();
- break;
- case GLFW_KEY_LEFT:
- alpha+=5;
- break;
- case GLFW_KEY_RIGHT:
- alpha-=5;
- break;
- case GLFW_KEY_UP:
- beta-=5;
- break;
- case GLFW_KEY_DOWN:
- beta+=5;
- break;
- case GLFW_KEY_PAGEUP:
- if(zoom>1) zoom-=1;
- break;
- case GLFW_KEY_PAGEDOWN:
- zoom+=1;
- break;
- default:
- break;
- }
-}
-
-
-/* Callback function for window resize events */
-void GLFWCALL handle_resize( int width, int height )
-{
- float ratio = 1.0f;
-
- if( height > 0 )
- {
- ratio = (float) width / (float) height;
- }
-
- /* Setup viewport (Place where the stuff will appear in the main window). */
- glViewport(0, 0, width, height);
-
- /*
- * Change to the projection matrix and set
- * our viewing volume.
- */
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- gluPerspective(60.0, ratio, 1.0, 1024.0);
-}
-
-
-/* Program entry point */
-int main(int argc, char* argv[])
-{
- /* Dimensions of our window. */
- int width, height;
- /* Style of our window. */
- int mode;
- /* Frame time */
- double t, t_old, dt_total;
-
- /* Initialize GLFW */
- if(glfwInit() == GL_FALSE)
- {
- fprintf(stderr, "GLFW initialization failed\n");
- exit(-1);
- }
-
- /* Desired window properties */
- width = 640;
- height = 480;
- mode = GLFW_WINDOW;
-
- /* Open window */
- if( glfwOpenWindow(width,height,0,0,0,0,16,0,mode) == GL_FALSE )
- {
- fprintf(stderr, "Could not open window\n");
- glfwTerminate();
- exit(-1);
- }
-
- /* Set title */
- glfwSetWindowTitle( "Wave Simulation" );
-
- glfwSwapInterval( 1 );
-
- /* Keyboard handler */
- glfwSetKeyCallback( handle_key_down );
- glfwEnable( GLFW_KEY_REPEAT );
-
- /* Window resize handler */
- glfwSetWindowSizeCallback( handle_resize );
-
- /* Initialize OpenGL */
- setup_opengl();
-
- /* Initialize simulation */
- initVertices();
- initSurface();
- adjustGrid();
-
- /* Initialize timer */
- t_old = glfwGetTime() - 0.01;
-
- /* Main loop */
- while(running)
- {
- /* Timing */
- t = glfwGetTime();
- dt_total = t - t_old;
- t_old = t;
-
- /* Safety - iterate if dt_total is too large */
- while( dt_total > 0.0f )
- {
- /* Select iteration time step */
- dt = dt_total > MAX_DELTA_T ? MAX_DELTA_T : dt_total;
- dt_total -= dt;
-
- /* Calculate wave propagation */
- calc();
- }
-
- /* Compute height of each vertex */
- adjustGrid();
-
- /* Draw wave grid to OpenGL display */
- draw_screen();
-
- /* Still running? */
- running = running && glfwGetWindowParam( GLFW_OPENED );
- }
-
- glfwTerminate();
-
- return 0;
-}
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