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authorEric Anholt <eric@anholt.net>2010-05-21 09:32:38 -0700
committerEric Anholt <eric@anholt.net>2010-05-21 12:20:39 -0700
commit68fc4b415e322f6744299e39864fbc377c6eff74 (patch)
tree4bafffd8b0105174f3c5c0ae327a005be9145990 /progs/samples/stretch.c
parente4f4489e3fc0b36d72821b55794fb843b2b7fa5f (diff)
Remove demos that have moved to git+ssh://git.freedesktop.org/git/mesa/demos.
The remaining programs are ones I've had difficulty finding a build environment for to make the build system or are unit tests that should probably live next to their code instead. Hopefully people can bring over the build for remaining pieces they care about.
Diffstat (limited to 'progs/samples/stretch.c')
-rw-r--r--progs/samples/stretch.c390
1 files changed, 0 insertions, 390 deletions
diff --git a/progs/samples/stretch.c b/progs/samples/stretch.c
deleted file mode 100644
index 11201dca23..0000000000
--- a/progs/samples/stretch.c
+++ /dev/null
@@ -1,390 +0,0 @@
-/*
- * Copyright (c) 1991, 1992, 1993 Silicon Graphics, Inc.
- *
- * Permission to use, copy, modify, distribute, and sell this software and
- * its documentation for any purpose is hereby granted without fee, provided
- * that (i) the above copyright notices and this permission notice appear in
- * all copies of the software and related documentation, and (ii) the name of
- * Silicon Graphics may not be used in any advertising or
- * publicity relating to the software without the specific, prior written
- * permission of Silicon Graphics.
- *
- * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF
- * ANY KIND,
- * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
- * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
- *
- * IN NO EVENT SHALL SILICON GRAPHICS BE LIABLE FOR
- * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
- * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
- * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
- * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
- * OF THIS SOFTWARE.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <math.h>
-#include <GL/glut.h>
-
-
-#define STEPCOUNT 40
-#define FALSE 0
-#define TRUE 1
-#define MAX(a, b) (((a) > (b)) ? (a) : (b))
-#define MIN(a, b) (((a) < (b)) ? (a) : (b))
-
-
-enum {
- OP_NOOP = 0,
- OP_STRETCH,
- OP_DRAWPOINT,
- OP_DRAWIMAGE
-};
-
-
-typedef struct _cRec {
- float x, y;
-} cRec;
-
-typedef struct _vertexRec {
- float x, y;
- float dX, dY;
- float tX, tY;
-} vertexRec;
-
-
-#include "loadppm.c"
-
-GLenum doubleBuffer;
-int imageSizeX, imageSizeY;
-char *fileName = 0;
-PPMImage *image;
-cRec cList[50];
-vertexRec vList[5];
-int cCount, cIndex[2], cStep;
-GLenum op = OP_NOOP;
-
-
-static void DrawImage(void)
-{
-
- glRasterPos2i(0, 0);
- glDrawPixels(image->sizeX, image->sizeY, GL_RGB, GL_UNSIGNED_BYTE,
- image->data);
-
- glFlush();
- if (doubleBuffer) {
- glutSwapBuffers();
- }
-
- glRasterPos2i(0, 0);
- glDrawPixels(image->sizeX, image->sizeY, GL_RGB, GL_UNSIGNED_BYTE,
- image->data);
-}
-
-static void DrawPoint(void)
-{
- int i;
-
- glColor3f(1.0, 0.0, 1.0);
- glPointSize(3.0);
- glBegin(GL_POINTS);
- for (i = 0; i < cCount; i++) {
- glVertex2f(cList[i].x, cList[i].y);
- }
- glEnd();
-
- glFlush();
- if (doubleBuffer) {
- glutSwapBuffers();
- }
-}
-
-static void InitVList(void)
-{
-
- vList[0].x = 0.0;
- vList[0].y = 0.0;
- vList[0].dX = 0.0;
- vList[0].dY = 0.0;
- vList[0].tX = 0.0;
- vList[0].tY = 0.0;
-
- vList[1].x = (float)imageSizeX;
- vList[1].y = 0.0;
- vList[1].dX = 0.0;
- vList[1].dY = 0.0;
- vList[1].tX = 1.0;
- vList[1].tY = 0.0;
-
- vList[2].x = (float)imageSizeX;
- vList[2].y = (float)imageSizeY;
- vList[2].dX = 0.0;
- vList[2].dY = 0.0;
- vList[2].tX = 1.0;
- vList[2].tY = 1.0;
-
- vList[3].x = 0.0;
- vList[3].y = (float)imageSizeY;
- vList[3].dX = 0.0;
- vList[3].dY = 0.0;
- vList[3].tX = 0.0;
- vList[3].tY = 1.0;
-
- vList[4].x = cList[0].x;
- vList[4].y = cList[0].y;
- vList[4].dX = (cList[1].x - cList[0].x) / STEPCOUNT;
- vList[4].dY = (cList[1].y - cList[0].y) / STEPCOUNT;
- vList[4].tX = cList[0].x / (float)imageSizeX;
- vList[4].tY = cList[0].y / (float)imageSizeY;
-}
-
-static void ScaleImage(int sizeX, int sizeY)
-{
- GLubyte *buf;
-
- buf = (GLubyte *)malloc(3*sizeX*sizeY);
- gluScaleImage(GL_RGB, image->sizeX, image->sizeY, GL_UNSIGNED_BYTE,
- image->data, sizeX, sizeY, GL_UNSIGNED_BYTE, buf);
- free(image->data);
- image->data = buf;
- image->sizeX = sizeX;
- image->sizeY = sizeY;
-}
-
-static void SetPoint(int x, int y)
-{
-
- cList[cCount].x = (float)x;
- cList[cCount].y = (float)y;
- cCount++;
-}
-
-static void Stretch(void)
-{
-
- glBegin(GL_TRIANGLES);
- glTexCoord2f(vList[0].tX, vList[0].tY);
- glVertex2f(vList[0].x, vList[0].y);
- glTexCoord2f(vList[1].tX, vList[1].tY);
- glVertex2f(vList[1].x, vList[1].y);
- glTexCoord2f(vList[4].tX, vList[4].tY);
- glVertex2f(vList[4].x, vList[4].y);
- glEnd();
-
- glBegin(GL_TRIANGLES);
- glTexCoord2f(vList[1].tX, vList[1].tY);
- glVertex2f(vList[1].x, vList[1].y);
- glTexCoord2f(vList[2].tX, vList[2].tY);
- glVertex2f(vList[2].x, vList[2].y);
- glTexCoord2f(vList[4].tX, vList[4].tY);
- glVertex2f(vList[4].x, vList[4].y);
- glEnd();
-
- glBegin(GL_TRIANGLES);
- glTexCoord2f(vList[2].tX, vList[2].tY);
- glVertex2f(vList[2].x, vList[2].y);
- glTexCoord2f(vList[3].tX, vList[3].tY);
- glVertex2f(vList[3].x, vList[3].y);
- glTexCoord2f(vList[4].tX, vList[4].tY);
- glVertex2f(vList[4].x, vList[4].y);
- glEnd();
-
- glBegin(GL_TRIANGLES);
- glTexCoord2f(vList[3].tX, vList[3].tY);
- glVertex2f(vList[3].x, vList[3].y);
- glTexCoord2f(vList[0].tX, vList[0].tY);
- glVertex2f(vList[0].x, vList[0].y);
- glTexCoord2f(vList[4].tX, vList[4].tY);
- glVertex2f(vList[4].x, vList[4].y);
- glEnd();
-
- glFlush();
- if (doubleBuffer) {
- glutSwapBuffers();
- }
-
- if (++cStep < STEPCOUNT) {
- vList[4].x += vList[4].dX;
- vList[4].y += vList[4].dY;
- } else {
- cIndex[0] = cIndex[1];
- cIndex[1] = cIndex[1] + 1;
- if (cIndex[1] == cCount) {
- cIndex[1] = 0;
- }
- vList[4].dX = (cList[cIndex[1]].x - cList[cIndex[0]].x) / STEPCOUNT;
- vList[4].dY = (cList[cIndex[1]].y - cList[cIndex[0]].y) / STEPCOUNT;
- cStep = 0;
- }
-}
-
-static void Key(unsigned char key, int x, int y)
-{
-
- switch (key) {
- case 27:
- free(image->data);
- exit(1);
- case 32:
- if (cCount > 1) {
- InitVList();
- cIndex[0] = 0;
- cIndex[1] = 1;
- cStep = 0;
- glEnable(GL_TEXTURE_2D);
- op = OP_STRETCH;
- }
- break;
- default:
- return;
- }
-
- glutPostRedisplay();
-}
-
-static void Mouse(int button, int state, int mouseX, int mouseY)
-{
-
- if (state != GLUT_DOWN)
- return;
-
- if (op == OP_STRETCH) {
- glDisable(GL_TEXTURE_2D);
- cCount = 0;
- op = OP_DRAWIMAGE;
- } else {
- SetPoint(mouseX, imageSizeY-mouseY);
- op = OP_DRAWPOINT;
- }
-
- glutPostRedisplay();
-}
-
-static void Animate(void)
-{
- static double t0 = -1.;
- double t, dt;
- t = glutGet(GLUT_ELAPSED_TIME) / 1000.;
- if (t0 < 0.)
- t0 = t;
- dt = t - t0;
-
- if (dt < 1./60.)
- return;
-
- t0 = t;
-
- switch (op) {
- case OP_STRETCH:
- Stretch();
- break;
- case OP_DRAWPOINT:
- DrawPoint();
- break;
- case OP_DRAWIMAGE:
- DrawImage();
- break;
- default:
- break;
- }
-}
-
-static GLenum Args(int argc, char **argv)
-{
- GLint i;
-
- doubleBuffer = GL_TRUE;
-
- for (i = 1; i < argc; i++) {
- if (strcmp(argv[i], "-sb") == 0) {
- doubleBuffer = GL_FALSE;
- } else if (strcmp(argv[i], "-db") == 0) {
- doubleBuffer = GL_TRUE;
- } else if (strcmp(argv[i], "-f") == 0) {
- if (i+1 >= argc || argv[i+1][0] == '-') {
- printf("-f (No file name).\n");
- return GL_FALSE;
- } else {
- fileName = argv[++i];
- }
- } else {
- printf("%s (Bad option).\n", argv[i]);
- return GL_FALSE;
- }
- }
- return GL_TRUE;
-}
-
-#if !defined(GLUTCALLBACK)
-#define GLUTCALLBACK
-#endif
-
-static void GLUTCALLBACK glut_post_redisplay_p(void)
-{
- glutPostRedisplay();
-}
-
-int main(int argc, char **argv)
-{
- GLenum type;
-
- glutInit(&argc, argv);
-
- if (Args(argc, argv) == GL_FALSE) {
- exit(1);
- }
-
- if (fileName == 0) {
- printf("No image file.\n");
- exit(1);
- }
-
- image = LoadPPM(fileName);
-
- /* changed powf and logf to pow and log -Brian */
- imageSizeX = (int)pow(2.0, (float)((int)(log(image->sizeX)/log(2.0))));
- imageSizeY = (int)pow(2.0, (float)((int)(log(image->sizeY)/log(2.0))));
-
- glutInitWindowPosition(0, 0); glutInitWindowSize( imageSizeX, imageSizeY);
-
- type = GLUT_RGB;
- type |= (doubleBuffer) ? GLUT_DOUBLE : GLUT_SINGLE;
- glutInitDisplayMode(type);
-
- if (glutCreateWindow("Stretch") == GL_FALSE) {
- exit(1);
- }
-
- glViewport(0, 0, imageSizeX, imageSizeY);
- gluOrtho2D(0, imageSizeX, 0, imageSizeY);
- glClearColor(0.0, 0.0, 0.0, 0.0);
-
- glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
- glPixelStorei(GL_PACK_ALIGNMENT, 1);
-
- ScaleImage(imageSizeX, imageSizeY);
-
- glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
- glTexImage2D(GL_TEXTURE_2D, 0, 3, image->sizeX, image->sizeY, 0,
- GL_RGB, GL_UNSIGNED_BYTE, (unsigned char *)image->data);
-
- cCount = 0;
- cIndex[0] = 0;
- cIndex[1] = 0;
- cStep = 0;
- op = OP_DRAWIMAGE;
-
- glutKeyboardFunc(Key);
- glutMouseFunc(Mouse);
- glutDisplayFunc(Animate);
- glutIdleFunc(glut_post_redisplay_p);
- glutMainLoop();
- return 0;
-}