progs/egl: Port ES1 gears to eglut.

As gears in the last demo under "screen" subdirectory, this also removes
the directory.

1 files changed, 0 insertions, 374 deletions

diff --git a/progs/egl/opengles1/screen/gears.c b/progs/egl/opengles1/screen/gears.c
deleted file mode 100644
index c7625826b97..00000000000
--- a/progs/egl/opengles1/screen/gears.c
+++ /dev/null
@@ -1,374 +0,0 @@
-/*
- * Copyright (C) 2009 Chia-I Wu <[email protected]>
- *
- * Based on eglgears by
- * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <math.h>
-#include <assert.h>
-
-#include <GLES/gl.h>
-#include "winsys.h"
-
-#ifndef M_PI
-#define M_PI 3.14159265
-#endif
-
-
-struct gear {
-   GLuint vbo;
-   GLfloat *vertices;
-   GLsizei stride;
-
-   GLint num_teeth;
-};
-
-static GLfloat view_rotx = 20.0, view_roty = 30.0, view_rotz = 0.0;
-static struct gear gears[3];
-static GLfloat angle = 0.0;
-
-/*
- *  Initialize a gear wheel.
- *
- *  Input:  gear - gear to initialize
- *          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
-init_gear(struct gear *gear, GLfloat inner_radius, GLfloat outer_radius,
-          GLfloat width, GLint teeth, GLfloat tooth_depth)
-{
-   GLfloat r0, r1, r2;
-   GLfloat a0, da;
-   GLint verts_per_tooth, total_verts, total_size;
-   GLint count, i;
-   GLfloat *verts;
-
-   r0 = inner_radius;
-   r1 = outer_radius - tooth_depth / 2.0;
-   r2 = outer_radius + tooth_depth / 2.0;
-
-   a0 = 2.0 * M_PI / teeth;
-   da = a0 / 4.0;
-
-   gear->vbo = 0;
-   gear->vertices = NULL;
-   gear->stride = sizeof(GLfloat) * 6; /* XYZ + normal */
-   gear->num_teeth = teeth;
-
-   verts_per_tooth = 10 + 4;
-   total_verts = teeth * verts_per_tooth;
-   total_size = total_verts * gear->stride;
-
-   verts = malloc(total_size);
-   if (!verts) {
-      printf("failed to allocate vertices\n");
-      return;
-   }
-
-#define GEAR_VERT(r, n, sign)                      \
-   do {                                            \
-      verts[count * 6 + 0] = (r) * vx[n];          \
-      verts[count * 6 + 1] = (r) * vy[n];          \
-      verts[count * 6 + 2] = (sign) * width * 0.5; \
-      verts[count * 6 + 3] = normal[0];            \
-      verts[count * 6 + 4] = normal[1];            \
-      verts[count * 6 + 5] = normal[2];            \
-      count++;                                     \
-   } while (0)
-
-   count = 0;
-   for (i = 0; i < teeth; i++) {
-      GLfloat normal[3];
-      GLfloat vx[5], vy[5];
-      GLfloat u, v;
-
-      normal[0] = 0.0;
-      normal[1] = 0.0;
-      normal[2] = 0.0;
-
-      vx[0] = cos(i * a0 + 0 * da);
-      vy[0] = sin(i * a0 + 0 * da);
-      vx[1] = cos(i * a0 + 1 * da);
-      vy[1] = sin(i * a0 + 1 * da);
-      vx[2] = cos(i * a0 + 2 * da);
-      vy[2] = sin(i * a0 + 2 * da);
-      vx[3] = cos(i * a0 + 3 * da);
-      vy[3] = sin(i * a0 + 3 * da);
-      vx[4] = cos(i * a0 + 4 * da);
-      vy[4] = sin(i * a0 + 4 * da);
-
-      /* outward faces of a tooth, 10 verts */
-      normal[0] = vx[0];
-      normal[1] = vy[0];
-      GEAR_VERT(r1, 0,  1);
-      GEAR_VERT(r1, 0, -1);
-
-      u = r2 * vx[1] - r1 * vx[0];
-      v = r2 * vy[1] - r1 * vy[0];
-      normal[0] = v;
-      normal[1] = -u;
-      GEAR_VERT(r2, 1,  1);
-      GEAR_VERT(r2, 1, -1);
-
-      normal[0] = vx[0];
-      normal[1] = vy[0];
-      GEAR_VERT(r2, 2,  1);
-      GEAR_VERT(r2, 2, -1);
-
-      u = r1 * vx[3] - r2 * vx[2];
-      v = r1 * vy[3] - r2 * vy[2];
-      normal[0] = v;
-      normal[1] = -u;
-      GEAR_VERT(r1, 3,  1);
-      GEAR_VERT(r1, 3, -1);
-
-      normal[0] = vx[0];
-      normal[1] = vy[0];
-      GEAR_VERT(r1, 4,  1);
-      GEAR_VERT(r1, 4, -1);
-
-      /* inside radius cylinder, 4 verts */
-      normal[0] = -vx[4];
-      normal[1] = -vy[4];
-      GEAR_VERT(r0, 4,  1);
-      GEAR_VERT(r0, 4, -1);
-
-      normal[0] = -vx[0];
-      normal[1] = -vy[0];
-      GEAR_VERT(r0, 0,  1);
-      GEAR_VERT(r0, 0, -1);
-
-      assert(count % verts_per_tooth == 0);
-   }
-   assert(count == total_verts);
-#undef GEAR_VERT
-
-   gear->vertices = verts;
-
-   /* setup VBO */
-   glGenBuffers(1, &gear->vbo);
-   if (gear->vbo) {
-      glBindBuffer(GL_ARRAY_BUFFER, gear->vbo);
-      glBufferData(GL_ARRAY_BUFFER, total_size, verts, GL_STATIC_DRAW);
-   }
-}
-
-
-static void
-draw_gear(const struct gear *gear)
-{
-   GLint i;
-
-   if (!gear->vbo && !gear->vertices) {
-      printf("nothing to be drawn\n");
-      return;
-   }
-
-   if (gear->vbo) {
-      glBindBuffer(GL_ARRAY_BUFFER, gear->vbo);
-      glVertexPointer(3, GL_FLOAT, gear->stride, (const GLvoid *) 0);
-      glNormalPointer(GL_FLOAT, gear->stride, (const GLvoid *) (sizeof(GLfloat) * 3));
-   } else {
-      glBindBuffer(GL_ARRAY_BUFFER, 0);
-      glVertexPointer(3, GL_FLOAT, gear->stride, gear->vertices);
-      glNormalPointer(GL_FLOAT, gear->stride, gear->vertices + 3);
-   }
-
-   glEnableClientState(GL_VERTEX_ARRAY);
-
-   for (i = 0; i < gear->num_teeth; i++) {
-      const GLint base = (10 + 4) * i;
-      GLushort indices[7];
-
-      glShadeModel(GL_FLAT);
-
-      /* front face */
-      indices[0] = base + 12;
-      indices[1] = base +  0;
-      indices[2] = base +  2;
-      indices[3] = base +  4;
-      indices[4] = base +  6;
-      indices[5] = base +  8;
-      indices[6] = base + 10;
-
-      glNormal3f(0.0, 0.0, 1.0);
-      glDrawElements(GL_TRIANGLE_FAN, 7, GL_UNSIGNED_SHORT, indices);
-
-      /* back face */
-      indices[0] = base + 13;
-      indices[1] = base + 11;
-      indices[2] = base +  9;
-      indices[3] = base +  7;
-      indices[4] = base +  5;
-      indices[5] = base +  3;
-      indices[6] = base +  1;
-
-      glNormal3f(0.0, 0.0, -1.0);
-      glDrawElements(GL_TRIANGLE_FAN, 7, GL_UNSIGNED_SHORT, indices);
-
-      glEnableClientState(GL_NORMAL_ARRAY);
-
-      /* outward face of a tooth */
-      glDrawArrays(GL_TRIANGLE_STRIP, base, 10);
-
-      /* inside radius cylinder */
-      glShadeModel(GL_SMOOTH);
-      glDrawArrays(GL_TRIANGLE_STRIP, base + 10, 4);
-
-      glDisableClientState(GL_NORMAL_ARRAY);
-   }
-
-   glDisableClientState(GL_VERTEX_ARRAY);
-}
-
-
-static void
-gears_draw(void *data)
-{
-   static const GLfloat red[4] = { 0.8, 0.1, 0.0, 1.0 };
-   static const GLfloat green[4] = { 0.0, 0.8, 0.2, 1.0 };
-   static const GLfloat blue[4] = { 0.2, 0.2, 1.0, 1.0 };
-
-   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);
-
-   glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, red);
-   draw_gear(&gears[0]);
-
-   glPopMatrix();
-
-   glPushMatrix();
-   glTranslatef(3.1, -2.0, 0.0);
-   glRotatef(-2.0 * angle - 9.0, 0.0, 0.0, 1.0);
-
-   glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, green);
-   draw_gear(&gears[1]);
-
-   glPopMatrix();
-
-   glPushMatrix();
-   glTranslatef(-3.1, 4.2, 0.0);
-   glRotatef(-2.0 * angle - 25.0, 0.0, 0.0, 1.0);
-
-   glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, blue);
-   draw_gear(&gears[2]);
-
-   glPopMatrix();
-
-   glPopMatrix();
-
-   /* advance rotation for next frame */
-   angle += 0.5; /* 0.5 degree per frame */
-   if (angle > 3600.0)
-      angle -= 3600.0;
-}
-
-
-static void gears_fini(void)
-{
-   GLint i;
-   for (i = 0; i < 3; i++) {
-      struct gear *gear = &gears[i];
-      if (gear->vbo) {
-         glDeleteBuffers(1, &gear->vbo);
-         gear->vbo = 0;
-      }
-      if (gear->vertices) {
-         free(gear->vertices);
-         gear->vertices = NULL;
-      }
-   }
-}
-
-
-static void gears_init(void)
-{
-   static const GLfloat pos[4] = { 5.0, 5.0, 10.0, 0.0 };
-
-   glLightfv(GL_LIGHT0, GL_POSITION, pos);
-   glEnable(GL_CULL_FACE);
-   glEnable(GL_LIGHTING);
-   glEnable(GL_LIGHT0);
-   glEnable(GL_DEPTH_TEST);
-   glEnable(GL_NORMALIZE);
-
-   init_gear(&gears[0], 1.0, 4.0, 1.0, 20, 0.7);
-   init_gear(&gears[1], 0.5, 2.0, 2.0, 10, 0.7);
-   init_gear(&gears[2], 1.3, 2.0, 0.5, 10, 0.7);
-}
-
-
-/* new window size or exposure */
-static void
-gears_reshape(int width, int height)
-{
-   GLfloat h = (GLfloat) height / (GLfloat) width;
-
-   glViewport(0, 0, (GLint) width, (GLint) height);
-
-   glMatrixMode(GL_PROJECTION);
-   glLoadIdentity();
-   glFrustumf(-1.0, 1.0, -h, h, 5.0, 60.0);
-
-   glMatrixMode(GL_MODELVIEW);
-   glLoadIdentity();
-   glTranslatef(0.0, 0.0, -40.0);
-}
-
-
-static void gears_run(void)
-{
-   winsysRun(5.0, gears_draw, NULL);
-}
-
-
-int
-main(int argc, char *argv[])
-{
-   EGLint width, height;
-
-   if (!winsysInitScreen())
-      exit(1);
-   winsysQueryScreenSize(&width, &height);
-
-   gears_init();
-   gears_reshape(width, height);
-   gears_run();
-   gears_fini();
-
-   winsysFiniScreen();
-
-   return 0;
-}