diff options
Diffstat (limited to 'nx-X11/extras/Mesa_6.4.2/progs/samples/copy.c')
| -rw-r--r-- | nx-X11/extras/Mesa_6.4.2/progs/samples/copy.c | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/nx-X11/extras/Mesa_6.4.2/progs/samples/copy.c b/nx-X11/extras/Mesa_6.4.2/progs/samples/copy.c new file mode 100644 index 000000000..391c637d6 --- /dev/null +++ b/nx-X11/extras/Mesa_6.4.2/progs/samples/copy.c @@ -0,0 +1,193 @@ +/* + * 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 <string.h> +#include <stdlib.h> +#include <GL/glut.h> + + +#include "loadppm.c" + +GLenum doubleBuffer; +GLint windW, windH; + +char *fileName = 0; +PPMImage *image; +float point[3]; +float zoom; +GLint x, y; + +static void Init(void) +{ + + glClearColor(0.0, 0.0, 0.0, 0.0); + + x = 0; + y = windH; + zoom = 1.8; +} + +static void Reshape(int width, int height) +{ + + windW = (GLint)width; + windH = (GLint)height; + + glViewport(0, 0, windW, windH); + + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + gluOrtho2D(0, windW, 0, windH); + glMatrixMode(GL_MODELVIEW); +} + +static void Key(unsigned char key, int x, int y) +{ + + switch (key) { + case 27: + exit(1); + case 'Z': + zoom += 0.2; + break; + case 'z': + zoom -= 0.2; + if (zoom < 0.2) { + zoom = 0.2; + } + break; + default: + return; + } + + glutPostRedisplay(); +} + +static void Mouse(int button, int state, int mouseX, int mouseY) +{ + if (state != GLUT_DOWN) + return; + x = (GLint)mouseX; + y = (GLint)mouseY; + + glutPostRedisplay(); +} + +static void Draw(void) +{ + + glClear(GL_COLOR_BUFFER_BIT); + + point[0] = (windW / 2) - (image->sizeX / 2); + point[1] = (windH / 2) - (image->sizeY / 2); + point[2] = 0; + glRasterPos3fv(point); + + glPixelStorei(GL_UNPACK_ALIGNMENT, 1); + glPixelZoom(1.0, 1.0); + glDrawPixels(image->sizeX, image->sizeY, GL_RGB, GL_UNSIGNED_BYTE, + image->data); + + point[0] = (float)x; + point[1] = windH - (float)y; + point[2] = 0.0; + glRasterPos3fv(point); + + glPixelZoom(zoom, zoom); + glCopyPixels((windW/2)-(image->sizeX/2), + (windH/2)-(image->sizeY/2), + image->sizeX, image->sizeY, GL_COLOR); + + glFlush(); + + if (doubleBuffer) { + glutSwapBuffers(); + } +} + +static GLenum Args(int argc, char **argv) +{ + GLint i; + + doubleBuffer = GL_FALSE; + + 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; +} + +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); + + windW = 300; + windH = 300; + glutInitWindowPosition(0, 0); glutInitWindowSize( windW, windH); + + type = GLUT_RGB; + type |= (doubleBuffer) ? GLUT_DOUBLE : GLUT_SINGLE; + glutInitDisplayMode(type); + + if (glutCreateWindow("Copy Test") == GL_FALSE) { + exit(1); + } + + Init(); + + glutReshapeFunc(Reshape); + glutKeyboardFunc(Key); + glutMouseFunc(Mouse); + glutDisplayFunc(Draw); + glutMainLoop(); + return 0; +} |