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Diffstat (limited to 'progs/samples/select.c')
-rw-r--r-- | progs/samples/select.c | 462 |
1 files changed, 0 insertions, 462 deletions
diff --git a/progs/samples/select.c b/progs/samples/select.c deleted file mode 100644 index 31ed93b9e0..0000000000 --- a/progs/samples/select.c +++ /dev/null @@ -1,462 +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 <math.h> -#include <string.h> -#include <time.h> -#include <GL/glut.h> - - -#define MAXOBJS 10000 -#define MAXSELECT 100 -#define MAXFEED 300 -#define SOLID 1 -#define LINE 2 -#define POINT 3 - - -GLint windW, windH; - -GLuint selectBuf[MAXSELECT]; -GLfloat feedBuf[MAXFEED]; -GLint vp[4]; -float zRotation = 90.0; -float zoom = 1.0; -GLint objectCount; -GLint numObjects; -struct object { - float v1[2]; - float v2[2]; - float v3[2]; - float color[3]; -} objects[MAXOBJS]; -GLenum linePoly = GL_FALSE; - - -static void InitObjects(GLint num) -{ - GLint i; - float x, y; - - if (num > MAXOBJS) { - num = MAXOBJS; - } - if (num < 1) { - num = 1; - } - objectCount = num; - - srand((unsigned int)time(NULL)); - for (i = 0; i < num; i++) { - x = (rand() % 300) - 150; - y = (rand() % 300) - 150; - - objects[i].v1[0] = x + (rand() % 50) - 25; - objects[i].v2[0] = x + (rand() % 50) - 25; - objects[i].v3[0] = x + (rand() % 50) - 25; - objects[i].v1[1] = y + (rand() % 50) - 25; - objects[i].v2[1] = y + (rand() % 50) - 25; - objects[i].v3[1] = y + (rand() % 50) - 25; - objects[i].color[0] = ((rand() % 100) + 50) / 150.0; - objects[i].color[1] = ((rand() % 100) + 50) / 150.0; - objects[i].color[2] = ((rand() % 100) + 50) / 150.0; - } -} - -static void Init(void) -{ - - numObjects = 10; - InitObjects(numObjects); - glGetIntegerv(GL_VIEWPORT, vp); - -#if 0 /* debug - test culling */ - glCullFace(GL_BACK); - glFrontFace(GL_CW); - glEnable(GL_CULL_FACE); -#endif -} - -static void Reshape(int width, int height) -{ - - windW = (GLint)width; - windH = (GLint)height; -} - -static void Render(GLenum mode) -{ - GLint i; - - for (i = 0; i < objectCount; i++) { - if (mode == GL_SELECT) { - glLoadName(i); - } - glColor3fv(objects[i].color); - glBegin(GL_POLYGON); - glVertex2fv(objects[i].v1); - glVertex2fv(objects[i].v2); - glVertex2fv(objects[i].v3); - glEnd(); - } -} - -static GLint DoSelect(GLint x, GLint y) -{ - GLint hits; - - glSelectBuffer(MAXSELECT, selectBuf); - (void)glRenderMode(GL_SELECT); - glInitNames(); - glPushName(~0); - - glPushMatrix(); - - glViewport(0, 0, windW, windH); - glGetIntegerv(GL_VIEWPORT, vp); - - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - gluPickMatrix(x, windH-y, 4, 4, vp); - gluOrtho2D(-175, 175, -175, 175); - glMatrixMode(GL_MODELVIEW); - - glClearColor(0.0, 0.0, 0.0, 0.0); - glClear(GL_COLOR_BUFFER_BIT); - - glScalef(zoom, zoom, zoom); - glRotatef(zRotation, 0, 0, 1); - - Render(GL_SELECT); - - glPopMatrix(); - - hits = glRenderMode(GL_RENDER); - if (hits <= 0) { - return -1; - } - - return selectBuf[(hits-1)*4+3]; -} - -static void RecolorTri(GLint h) -{ - - objects[h].color[0] = ((rand() % 100) + 50) / 150.0; - objects[h].color[1] = ((rand() % 100) + 50) / 150.0; - objects[h].color[2] = ((rand() % 100) + 50) / 150.0; -} - -static void DeleteTri(GLint h) -{ - - objects[h] = objects[objectCount-1]; - objectCount--; -} - -static void GrowTri(GLint h) -{ - float v[2]; - float *oldV = NULL; - GLint i; - - v[0] = objects[h].v1[0] + objects[h].v2[0] + objects[h].v3[0]; - v[1] = objects[h].v1[1] + objects[h].v2[1] + objects[h].v3[1]; - v[0] /= 3; - v[1] /= 3; - - for (i = 0; i < 3; i++) { - switch (i) { - case 0: - oldV = objects[h].v1; - break; - case 1: - oldV = objects[h].v2; - break; - case 2: - oldV = objects[h].v3; - break; - } - oldV[0] = 1.5 * (oldV[0] - v[0]) + v[0]; - oldV[1] = 1.5 * (oldV[1] - v[1]) + v[1]; - } -} - -static void Mouse(int button, int state, int mouseX, int mouseY) -{ - GLint hit; - - if (state != GLUT_DOWN) - return; - - hit = DoSelect((GLint)mouseX, (GLint)mouseY); - if (hit != -1) { - if (button == GLUT_LEFT_BUTTON) { - RecolorTri(hit); - } - if (button == GLUT_MIDDLE_BUTTON) { - GrowTri(hit); - } - if (button == GLUT_RIGHT_BUTTON) { - DeleteTri(hit); - } - } - - glutPostRedisplay(); -} - -static void Draw(void) -{ - - glPushMatrix(); - - glViewport(0, 0, windW, windH); - glGetIntegerv(GL_VIEWPORT, vp); - - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - gluOrtho2D(-175, 175, -175, 175); - glMatrixMode(GL_MODELVIEW); - - glClearColor(0.0, 0.0, 0.0, 0.0); - glClear(GL_COLOR_BUFFER_BIT); - - glScalef(zoom, zoom, zoom); - glRotatef(zRotation, 0, 0, 1); - - Render(GL_RENDER); - - glPopMatrix(); - - glFlush(); -} - -static void DrawZoom(GLint x, GLint y) -{ - - glPushMatrix(); - - glViewport(0, 0, windW, windH); - glGetIntegerv(GL_VIEWPORT, vp); - - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - gluPickMatrix(x, windH-y, 4, 4, vp); - gluOrtho2D(-175, 175, -175, 175); - glMatrixMode(GL_MODELVIEW); - - glClearColor(0.0, 0.0, 0.0, 0.0); - glClear(GL_COLOR_BUFFER_BIT); - - glScalef(zoom, zoom, zoom); - glRotatef(zRotation, 0, 0, 1); - - Render(GL_RENDER); - - glPopMatrix(); -} - -static void DumpFeedbackVert(GLint *i, GLint n) -{ - GLint index; - - index = *i; - if (index+7 > n) { - *i = n; - printf(" ???\n"); - return; - } - printf(" (%g %g %g), color = (%4.2f %4.2f %4.2f)\n", - feedBuf[index], - feedBuf[index+1], - feedBuf[index+2], - feedBuf[index+3], - feedBuf[index+4], - feedBuf[index+5]); - index += 7; - *i = index; -} - -static void DrawFeedback(GLint n) -{ - GLint i; - GLint verts; - - printf("Feedback results (%d floats):\n", n); - for (i = 0; i < n; i++) { - switch ((GLint)feedBuf[i]) { - case GL_POLYGON_TOKEN: - printf("Polygon"); - i++; - if (i < n) { - verts = (GLint)feedBuf[i]; - i++; - printf(": %d vertices", verts); - } else { - verts = 0; - } - printf("\n"); - while (verts) { - DumpFeedbackVert(&i, n); - verts--; - } - i--; - break; - case GL_LINE_TOKEN: - printf("Line:\n"); - i++; - DumpFeedbackVert(&i, n); - DumpFeedbackVert(&i, n); - i--; - break; - case GL_LINE_RESET_TOKEN: - printf("Line Reset:\n"); - i++; - DumpFeedbackVert(&i, n); - DumpFeedbackVert(&i, n); - i--; - break; - default: - printf("%9.2f\n", feedBuf[i]); - break; - } - } - if (i == MAXFEED) { - printf("...\n"); - } - printf("\n"); -} - -static void DoFeedback(void) -{ - GLint x; - - glFeedbackBuffer(MAXFEED, GL_3D_COLOR, feedBuf); - (void)glRenderMode(GL_FEEDBACK); - - glPushMatrix(); - - glViewport(0, 0, windW, windH); - glGetIntegerv(GL_VIEWPORT, vp); - - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - gluOrtho2D(-175, 175, -175, 175); - glMatrixMode(GL_MODELVIEW); - - glClearColor(0.0, 0.0, 0.0, 0.0); - glClear(GL_COLOR_BUFFER_BIT); - - glScalef(zoom, zoom, zoom); - glRotatef(zRotation, 0, 0, 1); - - Render(GL_FEEDBACK); - - glPopMatrix(); - - x = glRenderMode(GL_RENDER); - if (x == -1) { - x = MAXFEED; - } - - DrawFeedback((GLint)x); -} - -static void Key2(int key, int x, int y) -{ - switch (key) { - case GLUT_KEY_LEFT: - zRotation += 0.5; - break; - case GLUT_KEY_RIGHT: - zRotation -= 0.5; - break; - default: - return; - } - - glutPostRedisplay(); -} - -static void Key(unsigned char key, int x, int y) -{ - switch (key) { - case 27: - exit(1); - case 'Z': - zoom /= 0.75; - break; - case 'z': - zoom *= 0.75; - break; - case 'f': - DoFeedback(); - break; - case 'd': - DrawZoom(x, y); - break; - case 'l': - linePoly = !linePoly; - if (linePoly) { - glPolygonMode(GL_FRONT_AND_BACK, GL_LINE); - } else { - glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); - } - break; - default: - return; - } - - glutPostRedisplay(); -} - -int main(int argc, char **argv) -{ - GLenum type; - - glutInit(&argc, argv); - - windW = 300; - windH = 300; - glutInitWindowPosition(0, 0); glutInitWindowSize( windW, windH); - - type = GLUT_RGB | GLUT_SINGLE; - glutInitDisplayMode(type); - - if (glutCreateWindow("Select Test") == GL_FALSE) { - exit(1); - } - - Init(); - - glutReshapeFunc(Reshape); - glutKeyboardFunc(Key); - glutSpecialFunc(Key2); - glutMouseFunc(Mouse); - glutDisplayFunc(Draw); - glutMainLoop(); - return 0; -} |