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Diffstat (limited to 'progs/samples/sphere.c')
| -rw-r--r-- | progs/samples/sphere.c | 1034 |
1 files changed, 1034 insertions, 0 deletions
diff --git a/progs/samples/sphere.c b/progs/samples/sphere.c new file mode 100644 index 0000000000..154e85cbec --- /dev/null +++ b/progs/samples/sphere.c @@ -0,0 +1,1034 @@ +/* + * 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. + */ + +/* BEP: renamed "nearest" as "nnearest" to avoid math.h collision on AIX */ + +#include <stdio.h> +#include <string.h> +#include <math.h> +#include <stdlib.h> +#include <GL/glut.h> + + +#define FALSE 0 +#define TRUE 1 +#ifndef PI +#define PI 3.14159265358979323846 +#endif + + +#include "loadppm.c" + +int rgb; /* unused */ + +#include "tkmap.c" + +GLenum doubleBuffer; +int W = 400, H = 400; + +char *imageFileName = 0; +PPMImage *image; + +int numComponents; + +float *minFilter, *magFilter, *sWrapMode, *tWrapMode; +float decal[] = {GL_DECAL}; +float modulate[] = {GL_MODULATE}; +float repeat[] = {GL_REPEAT}; +float clamp[] = {GL_CLAMP}; +float nnearest[] = {GL_NEAREST}; +float linear[] = {GL_LINEAR}; +float nearest_mipmap_nearest[] = {GL_NEAREST_MIPMAP_NEAREST}; +float nearest_mipmap_linear[] = {GL_NEAREST_MIPMAP_LINEAR}; +float linear_mipmap_nearest[] = {GL_LINEAR_MIPMAP_NEAREST}; +float linear_mipmap_linear[] = {GL_LINEAR_MIPMAP_LINEAR}; +GLint sphereMap[] = {GL_SPHERE_MAP}; + +float xRotation = 0.0, yRotation = 0.0; +float zTranslate = -4.0; +GLenum autoRotate = TRUE; +GLenum deepestColor = COLOR_GREEN; +GLenum isLit = TRUE; +GLenum isFogged = FALSE; +float *textureEnvironment = modulate; + +struct MipMap { + int width, height; + unsigned char *data; +}; + +int cube, cage, cylinder, torus, genericObject; + +float c[6][4][4][3] = { + { + { + { + 1.0, 1.0, -1.0 + }, + { + 0.0, 1.0, -1.0 + }, + { + 0.0, 0.0, -1.0 + }, + { + 1.0, 0.0, -1.0 + }, + }, + { + { + 0.0, 1.0, -1.0 + }, + { + -1.0, 1.0, -1.0 + }, + { + -1.0, 0.0, -1.0 + }, + { + 0.0, 0.0, -1.0 + }, + }, + { + { + 0.0, 0.0, -1.0 + }, + { + -1.0, 0.0, -1.0 + }, + { + -1.0, -1.0, -1.0 + }, + { + 0.0, -1.0, -1.0 + }, + }, + { + { + 1.0, 0.0, -1.0 + }, + { + 0.0, 0.0, -1.0 + }, + { + 0.0, -1.0, -1.0 + }, + { + 1.0, -1.0, -1.0 + }, + }, + }, + { + { + { + 1.0, 1.0, 1.0 + }, + { + 1.0, 1.0, 0.0 + }, + { + 1.0, 0.0, 0.0 + }, + { + 1.0, 0.0, 1.0 + }, + }, + { + { + 1.0, 1.0, 0.0 + }, + { + 1.0, 1.0, -1.0 + }, + { + 1.0, 0.0, -1.0 + }, + { + 1.0, 0.0, 0.0 + }, + }, + { + { + 1.0, 0.0, -1.0 + }, + { + 1.0, -1.0, -1.0 + }, + { + 1.0, -1.0, 0.0 + }, + { + 1.0, 0.0, 0.0 + }, + }, + { + { + 1.0, 0.0, 0.0 + }, + { + 1.0, -1.0, 0.0 + }, + { + 1.0, -1.0, 1.0 + }, + { + 1.0, 0.0, 1.0 + }, + }, + }, + { + { + { + -1.0, 1.0, 1.0 + }, + { + 0.0, 1.0, 1.0 + }, + { + 0.0, 0.0, 1.0 + }, + { + -1.0, 0.0, 1.0 + }, + }, + { + { + 0.0, 1.0, 1.0 + }, + { + 1.0, 1.0, 1.0 + }, + { + 1.0, 0.0, 1.0 + }, + { + 0.0, 0.0, 1.0 + }, + }, + { + { + 1.0, 0.0, 1.0 + }, + { + 1.0, -1.0, 1.0 + }, + { + 0.0, -1.0, 1.0 + }, + { + 0.0, 0.0, 1.0 + }, + }, + { + { + 0.0, -1.0, 1.0 + }, + { + -1.0, -1.0, 1.0 + }, + { + -1.0, 0.0, 1.0 + }, + { + 0.0, 0.0, 1.0 + }, + }, + }, + { + { + { + -1.0, 1.0, -1.0 + }, + { + -1.0, 1.0, 0.0 + }, + { + -1.0, 0.0, 0.0 + }, + { + -1.0, 0.0, -1.0 + }, + }, + { + { + -1.0, 1.0, 0.0 + }, + { + -1.0, 1.0, 1.0 + }, + { + -1.0, 0.0, 1.0 + }, + { + -1.0, 0.0, 0.0 + }, + }, + { + { + -1.0, 0.0, 1.0 + }, + { + -1.0, -1.0, 1.0 + }, + { + -1.0, -1.0, 0.0 + }, + { + -1.0, 0.0, 0.0 + }, + }, + { + { + -1.0, -1.0, 0.0 + }, + { + -1.0, -1.0, -1.0 + }, + { + -1.0, 0.0, -1.0 + }, + { + -1.0, 0.0, 0.0 + }, + }, + }, + { + { + { + -1.0, 1.0, 1.0 + }, + { + -1.0, 1.0, 0.0 + }, + { + 0.0, 1.0, 0.0 + }, + { + 0.0, 1.0, 1.0 + }, + }, + { + { + -1.0, 1.0, 0.0 + }, + { + -1.0, 1.0, -1.0 + }, + { + 0.0, 1.0, -1.0 + }, + { + 0.0, 1.0, 0.0 + }, + }, + { + { + 0.0, 1.0, -1.0 + }, + { + 1.0, 1.0, -1.0 + }, + { + 1.0, 1.0, 0.0 + }, + { + 0.0, 1.0, 0.0 + }, + }, + { + { + 1.0, 1.0, 0.0 + }, + { + 1.0, 1.0, 1.0 + }, + { + 0.0, 1.0, 1.0 + }, + { + 0.0, 1.0, 0.0 + }, + }, + }, + { + { + { + -1.0, -1.0, -1.0 + }, + { + -1.0, -1.0, 0.0 + }, + { + 0.0, -1.0, 0.0 + }, + { + 0.0, -1.0, -1.0 + }, + }, + { + { + -1.0, -1.0, 0.0 + }, + { + -1.0, -1.0, 1.0 + }, + { + 0.0, -1.0, 1.0 + }, + { + 0.0, -1.0, 0.0 + }, + }, + { + { + 0.0, -1.0, 1.0 + }, + { + 1.0, -1.0, 1.0 + }, + { + 1.0, -1.0, 0.0 + }, + { + 0.0, -1.0, 0.0 + }, + }, + { + { + 1.0, -1.0, 0.0 + }, + { + 1.0, -1.0, -1.0 + }, + { + 0.0, -1.0, -1.0 + }, + { + 0.0, -1.0, 0.0 + }, + }, + } +}; + +float n[6][3] = { + { + 0.0, 0.0, -1.0 + }, + { + 1.0, 0.0, 0.0 + }, + { + 0.0, 0.0, 1.0 + }, + { + -1.0, 0.0, 0.0 + }, + { + 0.0, 1.0, 0.0 + }, + { + 0.0, -1.0, 0.0 + } +}; + +GLfloat identity[16] = { + 1, 0, 0, 0, + 0, 1, 0, 0, + 0, 0, 1, 0, + 0, 0, 0, 1, +}; + + +void BuildCylinder(int numEdges) +{ + int i, top = 1.0, bottom = -1.0; + float x[100], y[100], angle; + + for (i = 0; i <= numEdges; i++) { + angle = i * 2.0 * PI / numEdges; + x[i] = cos(angle); /* was cosf() */ + y[i] = sin(angle); /* was sinf() */ + } + + glNewList(cylinder, GL_COMPILE); + glBegin(GL_TRIANGLE_STRIP); + for (i = 0; i <= numEdges; i++) { + glNormal3f(x[i], y[i], 0.0); + glVertex3f(x[i], y[i], bottom); + glVertex3f(x[i], y[i], top); + } + glEnd(); + glBegin(GL_TRIANGLE_FAN); + glNormal3f(0.0, 0.0, 1.0); + glVertex3f(0.0, 0.0, top); + for (i = 0; i <= numEdges; i++) { + glVertex3f(x[i], -y[i], top); + } + glEnd(); + glBegin(GL_TRIANGLE_FAN); + glNormal3f(0.0, 0.0, -1.0); + glVertex3f(0.0, 0.0, bottom); + for (i = 0; i <= numEdges; i++) { + glVertex3f(x[i], y[i], bottom); + } + glEnd(); + glEndList(); +} + +void BuildTorus(float rc, int numc, float rt, int numt) +{ + int i, j, k; + double s, t; + double x, y, z; + double pi, twopi; + + pi = 3.14159265358979323846; + twopi = 2.0 * pi; + + glNewList(torus, GL_COMPILE); + for (i = 0; i < numc; i++) { + glBegin(GL_QUAD_STRIP); + for (j = 0; j <= numt; j++) { + for (k = 0; k <= 1; k++) { + s = (i + k) % numc + 0.5; + t = j % numt; + + x = cos(t*twopi/numt) * cos(s*twopi/numc); + y = sin(t*twopi/numt) * cos(s*twopi/numc); + z = sin(s*twopi/numc); + glNormal3f(x, y, z); + + x = (rt + rc * cos(s*twopi/numc)) * cos(t*twopi/numt); + y = (rt + rc * cos(s*twopi/numc)) * sin(t*twopi/numt); + z = rc * sin(s*twopi/numc); + glVertex3f(x, y, z); + } + } + glEnd(); + } + glEndList(); +} + +void BuildCage(void) +{ + int i; + float inc; + float right, left, top, bottom, front, back; + + front = 0.0; + back = -8.0; + + left = -4.0; + bottom = -4.0; + right = 4.0; + top = 4.0; + + inc = 2.0 * 4.0 * 0.1; + + glNewList(cage, GL_COMPILE); + for (i = 0; i < 10; i++) { + + /* + ** Back + */ + glBegin(GL_LINES); + glVertex3f(left+i*inc, top, back); + glVertex3f(left+i*inc, bottom, back); + glEnd(); + glBegin(GL_LINES); + glVertex3f(right, bottom+i*inc, back); + glVertex3f(left, bottom+i*inc, back); + glEnd(); + + /* + ** Front + */ + glBegin(GL_LINES); + glVertex3f(left+i*inc, top, front); + glVertex3f(left+i*inc, bottom, front); + glEnd(); + glBegin(GL_LINES); + glVertex3f(right, bottom+i*inc, front); + glVertex3f(left, bottom+i*inc, front); + glEnd(); + + /* + ** Left + */ + glBegin(GL_LINES); + glVertex3f(left, bottom+i*inc, front); + glVertex3f(left, bottom+i*inc, back); + glEnd(); + glBegin(GL_LINES); + glVertex3f(left, top, back+i*inc); + glVertex3f(left, bottom, back+i*inc); + glEnd(); + + /* + ** Right + */ + glBegin(GL_LINES); + glVertex3f(right, top-i*inc, front); + glVertex3f(right, top-i*inc, back); + glEnd(); + glBegin(GL_LINES); + glVertex3f(right, top, back+i*inc); + glVertex3f(right, bottom, back+i*inc); + glEnd(); + + /* + ** Top + */ + glBegin(GL_LINES); + glVertex3f(left+i*inc, top, front); + glVertex3f(left+i*inc, top, back); + glEnd(); + glBegin(GL_LINES); + glVertex3f(right, top, back+i*inc); + glVertex3f(left, top, back+i*inc); + glEnd(); + + /* + ** Bottom + */ + glBegin(GL_LINES); + glVertex3f(right-i*inc, bottom, front); + glVertex3f(right-i*inc, bottom, back); + glEnd(); + glBegin(GL_LINES); + glVertex3f(right, bottom, back+i*inc); + glVertex3f(left, bottom, back+i*inc); + glEnd(); + } + glEndList(); +} + +void BuildCube(void) +{ + int i, j; + + glNewList(cube, GL_COMPILE); + for (i = 0; i < 6; i++) { + for (j = 0; j < 4; j++) { + glNormal3fv(n[i]); + glBegin(GL_POLYGON); + glVertex3fv(c[i][j][0]); + glVertex3fv(c[i][j][1]); + glVertex3fv(c[i][j][2]); + glVertex3fv(c[i][j][3]); + glEnd(); + } + } + glEndList(); +} + +void BuildLists(void) +{ + + cube = glGenLists(1); + BuildCube(); + + cage = glGenLists(2); + BuildCage(); + + cylinder = glGenLists(3); + BuildCylinder(60); + + torus = glGenLists(4); + BuildTorus(0.65, 20, .85, 65); + + genericObject = torus; +} + +void SetDeepestColor(void) +{ + GLint redBits, greenBits, blueBits; + + glGetIntegerv(GL_RED_BITS, &redBits); + glGetIntegerv(GL_GREEN_BITS, &greenBits); + glGetIntegerv(GL_BLUE_BITS, &blueBits); + + deepestColor = (redBits >= greenBits) ? COLOR_RED : COLOR_GREEN; + deepestColor = (deepestColor >= blueBits) ? deepestColor : COLOR_BLUE; +} + +void SetDefaultSettings(void) +{ + + magFilter = nnearest; + minFilter = nnearest; + sWrapMode = repeat; + tWrapMode = repeat; + textureEnvironment = modulate; + autoRotate = TRUE; +} + +unsigned char *AlphaPadImage(int bufSize, unsigned char *inData, int alpha) +{ + unsigned char *outData, *out_ptr, *in_ptr; + int i; + + outData = (unsigned char *) malloc(bufSize * 4); + out_ptr = outData; + in_ptr = inData; + + for (i = 0; i < bufSize; i++) { + *out_ptr++ = *in_ptr++; + *out_ptr++ = *in_ptr++; + *out_ptr++ = *in_ptr++; + *out_ptr++ = alpha; + } + + free (inData); + return outData; +} + +void Init(void) +{ + float ambient[] = {0.0, 0.0, 0.0, 1.0}; + float diffuse[] = {0.0, 1.0, 0.0, 1.0}; + float specular[] = {1.0, 1.0, 1.0, 1.0}; + float position[] = {2.0, 2.0, 0.0, 1.0}; + float fog_color[] = {0.0, 0.0, 0.0, 1.0}; + float mat_ambient[] = {0.0, 0.0, 0.0, 1.0}; + float mat_shininess[] = {90.0}; + float mat_specular[] = {1.0, 1.0, 1.0, 1.0}; + float mat_diffuse[] = {1.0, 1.0, 1.0, 1.0}; + float lmodel_ambient[] = {0.0, 0.0, 0.0, 1.0}; + float lmodel_twoside[] = {GL_TRUE}; + + SetDeepestColor(); + SetDefaultSettings(); + + if (numComponents == 4) { + image = LoadPPM(imageFileName); + image->data = AlphaPadImage(image->sizeX*image->sizeY, + image->data, 128); + glPixelStorei(GL_UNPACK_ALIGNMENT, 1); + gluBuild2DMipmaps(GL_TEXTURE_2D, numComponents, + image->sizeX, image->sizeY, + GL_RGBA, GL_UNSIGNED_BYTE, image->data); + } else { + image = LoadPPM(imageFileName); + glPixelStorei(GL_UNPACK_ALIGNMENT, 1); + gluBuild2DMipmaps(GL_TEXTURE_2D, numComponents, + image->sizeX, image->sizeY, + GL_RGB, GL_UNSIGNED_BYTE, image->data); + } + + glFogf(GL_FOG_DENSITY, 0.125); + glFogi(GL_FOG_MODE, GL_LINEAR); + glFogf(GL_FOG_START, 4.0); + glFogf(GL_FOG_END, 9.0); + glFogfv(GL_FOG_COLOR, fog_color); + + glLightfv(GL_LIGHT0, GL_AMBIENT, ambient); + glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse); + glLightfv(GL_LIGHT0, GL_SPECULAR, specular); + glLightfv(GL_LIGHT0, GL_POSITION, position); + + glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, mat_shininess); + glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, mat_specular); + glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, mat_diffuse); + glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, mat_ambient); + + glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient); + glLightModelfv(GL_LIGHT_MODEL_TWO_SIDE, lmodel_twoside); + glShadeModel(GL_SMOOTH); + + glEnable(GL_LIGHTING); + glEnable(GL_LIGHT0); + + glClearColor(0.0, 0.0, 0.0, 0.0); + glViewport(0, 0, W, H); + glEnable(GL_DEPTH_TEST); + + glFrontFace(GL_CW); + glEnable(GL_CULL_FACE); + glCullFace(GL_BACK); + + glEnable(GL_TEXTURE_2D); + glTexGeniv(GL_S, GL_TEXTURE_GEN_MODE, sphereMap); + glTexGeniv(GL_T, GL_TEXTURE_GEN_MODE, sphereMap); + glEnable(GL_TEXTURE_GEN_S); + glEnable(GL_TEXTURE_GEN_T); + + glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, magFilter); + glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, minFilter); + glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, sWrapMode); + glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, tWrapMode); + + glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, textureEnvironment); + + BuildLists(); +} + +void ReInit(void) +{ + + if (genericObject == torus) { + glEnable(GL_DEPTH_TEST); + } else { + glDisable(GL_DEPTH_TEST); + } + if (isFogged) { + textureEnvironment = modulate; + } + + glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, magFilter); + glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, minFilter); + glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, textureEnvironment); +} + +void Draw(void) +{ + + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glFrustum(-0.2, 0.2, -0.2, 0.2, 0.15, 9.0); + glMatrixMode(GL_MODELVIEW); + + glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); + if (isFogged) { + glEnable(GL_FOG); + glColor3fv(RGBMap[deepestColor]); + } else { + glColor3fv(RGBMap[COLOR_WHITE]); + } + glDisable(GL_LIGHTING); + glDisable(GL_LIGHT0); + glDisable(GL_TEXTURE_2D); + glCallList(cage); + + glPushMatrix(); + glTranslatef(0.0, 0.0, zTranslate); + glRotatef(xRotation, 1, 0, 0); + glRotatef(yRotation, 0, 1, 0); + + if (isLit == TRUE) { + glEnable(GL_LIGHTING); + glEnable(GL_LIGHT0); + } + + glEnable(GL_TEXTURE_2D); + if (isFogged) { + glDisable(GL_FOG); + } + glPolygonMode(GL_FRONT, GL_FILL); + glColor3fv(RGBMap[deepestColor]); + glCallList(genericObject); + + glPopMatrix(); + glFlush(); + + if (autoRotate) { + xRotation += .75; + yRotation += .375; + } + glutSwapBuffers(); +} + +void Reshape(int width, int height) +{ + + W = width; + H = height; + ReInit(); + glViewport( 0, 0, width, height ); /*new*/ +} + +void Key2(int key, int x, int y) +{ + + switch (key) { + case GLUT_KEY_LEFT: + yRotation -= 0.5; + autoRotate = FALSE; + ReInit(); + break; + case GLUT_KEY_RIGHT: + yRotation += 0.5; + autoRotate = FALSE; + ReInit(); + break; + case GLUT_KEY_UP: + xRotation -= 0.5; + autoRotate = FALSE; + ReInit(); + break; + case GLUT_KEY_DOWN: + xRotation += 0.5; + autoRotate = FALSE; + ReInit(); + break; + default: + return; + } +} + +void Key(unsigned char key, int x, int y) +{ + + switch (key) { + case 27: + free(image->data); + exit(1); + + case 'a': + autoRotate = !autoRotate; + ReInit(); + break; + case 'c': + genericObject = (genericObject == cube) ? cylinder : cube; + ReInit(); + break; + case 'd': + textureEnvironment = decal; + ReInit(); + break; + case 'm': + textureEnvironment = modulate; + ReInit(); + break; + case 'l': + isLit = !isLit; + ReInit(); + break; + case 'f': + isFogged = !isFogged; + ReInit(); + break; + case 't': + genericObject = torus; + ReInit(); + break; + case '0': + magFilter = nnearest; + ReInit(); + break; + case '1': + magFilter = linear; + ReInit(); + break; + case '2': + minFilter = nnearest; + ReInit(); + break; + case '3': + minFilter = linear; + ReInit(); + break; + case '4': + minFilter = nearest_mipmap_nearest; + ReInit(); + break; + case '5': + minFilter = nearest_mipmap_linear; + ReInit(); + break; + case '6': + minFilter = linear_mipmap_nearest; + ReInit(); + break; + case '7': + minFilter = linear_mipmap_linear; + ReInit(); + break; + default: + return; + } +} + +GLenum Args(int argc, char **argv) +{ + GLint i; + + doubleBuffer = GL_FALSE; + numComponents = 4; + + 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 { + imageFileName = argv[++i]; + } + } else if (strcmp(argv[i], "-4") == 0) { + numComponents = 4; + } else if (strcmp(argv[i], "-3") == 0) { + numComponents = 3; + } else { + printf("%s (Bad option).\n", argv[i]); + return GL_FALSE; + } + } + return GL_TRUE; +} + +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 (imageFileName == 0) { + printf("No image file.\n"); + exit(1); + } + + glutInitWindowPosition(0, 0); glutInitWindowSize( W, H); + + type = GLUT_RGB | GLUT_DEPTH; + type |= (doubleBuffer) ? GLUT_DOUBLE : GLUT_SINGLE; + glutInitDisplayMode(type); + + if (glutCreateWindow("Texture Test") == GL_FALSE) { + exit(1); + } + + Init(); + + glutReshapeFunc(Reshape); + glutKeyboardFunc(Key); + glutSpecialFunc(Key2); + glutDisplayFunc(Draw); + glutIdleFunc(glut_post_redisplay_p); + + glutMainLoop(); + return 0; +} |