/* * 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> #define CI_OFFSET 16 GLenum rgb, doubleBuffer, windType; GLenum mode1, mode2; GLint size; float pntA[3] = { -160.0, 0.0, 0.0 }; float pntB[3] = { -130.0, 0.0, 0.0 }; float pntC[3] = { -40.0, -50.0, 0.0 }; float pntD[3] = { 30.0, 60.0, 0.0 }; #include "tkmap.c" static void Init(void) { GLint i; glClearColor(0.0, 0.0, 0.0, 0.0); glLineStipple(1, 0xF0E0); glBlendFunc(GL_SRC_ALPHA, GL_ONE); if (!rgb) { for (i = 0; i < 16; i++) { glutSetColor(i+CI_OFFSET, i/15.0, i/15.0, 0.0); } } mode1 = GL_FALSE; mode2 = GL_FALSE; size = 1; } static void Reshape(int width, int height) { glViewport(0, 0, (GLint)width, (GLint)height); glMatrixMode(GL_PROJECTION); glLoadIdentity(); gluOrtho2D(-175, 175, -175, 175); glMatrixMode(GL_MODELVIEW); } static void Key(unsigned char key, int x, int y) { switch (key) { case 27: exit(1); case '1': mode1 = !mode1; break; case '2': mode2 = !mode2; break; case 'W': size++; break; case 'w': size--; if (size < 1) { size = 1; } break; default: return; } glutPostRedisplay(); } static void Draw(void) { GLint ci, i; glClear(GL_COLOR_BUFFER_BIT); glLineWidth(size); if (mode1) { glEnable(GL_LINE_STIPPLE); } else { glDisable(GL_LINE_STIPPLE); } if (mode2) { ci = CI_OFFSET; glEnable(GL_LINE_SMOOTH); glEnable(GL_BLEND); } else { ci = COLOR_YELLOW; glDisable(GL_LINE_SMOOTH); glDisable(GL_BLEND); } glPushMatrix(); glShadeModel( GL_FLAT ); for (i = 0; i < 360; i += 5) { glRotatef(5.0, 0,0,1); (rgb) ? glColor3f(1.0, 1.0, 0.0) : glIndexi(ci); glBegin(GL_LINE_STRIP); glVertex3fv(pntA); glVertex3fv(pntB); glEnd(); glPointSize(1); SetColor(COLOR_GREEN); glBegin(GL_POINTS); glVertex3fv(pntA); glVertex3fv(pntB); glEnd(); } glPopMatrix(); glFlush(); if (doubleBuffer) { glutSwapBuffers(); } } static GLenum Args(int argc, char **argv) { GLint i; rgb = GL_TRUE; doubleBuffer = GL_TRUE; for (i = 1; i < argc; i++) { if (strcmp(argv[i], "-ci") == 0) { rgb = GL_FALSE; } else if (strcmp(argv[i], "-rgb") == 0) { rgb = GL_TRUE; } else if (strcmp(argv[i], "-sb") == 0) { doubleBuffer = GL_FALSE; } else if (strcmp(argv[i], "-db") == 0) { doubleBuffer = GL_TRUE; } else { printf("%s (Bad option).\n", argv[i]); return GL_FALSE; } } return GL_TRUE; } int main(int argc, char **argv) { glutInit(&argc, argv); if (Args(argc, argv) == GL_FALSE) { exit(1); } glutInitWindowPosition(0, 0); glutInitWindowSize( 300, 300); windType = (rgb) ? GLUT_RGB : GLUT_INDEX; windType |= (doubleBuffer) ? GLUT_DOUBLE : GLUT_SINGLE; glutInitDisplayMode(windType); if (glutCreateWindow("Line Test") == GL_FALSE) { exit(1); } InitMap(); Init(); glutReshapeFunc(Reshape); glutKeyboardFunc(Key); glutDisplayFunc(Draw); glutMainLoop(); return 0; }