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Eric Sartre
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add various samples
1 parent 0d64449 commit fa4e514

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6 files changed

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6 files changed

+213
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lines changed

‎samples/planet.c

+26
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#include <stdio.h>
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#include "geometry.h"
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#include "solid.h"
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int main()
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{
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init_geometry();
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shape_t *planet = new_sphere(50, 20, 20);
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shape_t *sp1 = new_sphere(10, 16, 16);
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shape_t *sp2 = new_sphere(10, 16, 16);
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shape_t *t1 = new_taurus(30, 4, 50, 10);
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shape_t *t2 = new_taurus(30, 4, 40, 10);
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shape_translate(sp1, 80, 70, 40);
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shape_translate(sp2, -90, 10, -60);
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shape_scale(t1, 5, 1.2, 5);
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shape_scale(t2, 3.5, 1.2, 3.5);
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shape_rotate(t1, -20, 0, 0, 1);
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shape_rotate(t2, 20, 0, 0, 1);
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flushOBJ(stdout);
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free_shape(planet);
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free_shape(t1);
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free_shape(t2);
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finalize_geometry();
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return 0;
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}
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‎samples/revolution.c

+134
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#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <GL/glut.h>
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#include "geometry.h"
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#include "solid.h"
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#define INITIAL_CAPACITY_POINTS 100
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#define DIVISION_NUMBER 60
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#define WINDOW_HEIGHT 600
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static point_t *pt = NULL;
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static unsigned numpoints = 0;
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static unsigned capacity = INITIAL_CAPACITY_POINTS;
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static FILE *file_out = NULL;
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void push_point(const double x, const double y)
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{
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if(numpoints >= capacity) {
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capacity *= 2;
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if((pt = realloc(pt, capacity * sizeof(point_t))) == NULL) {
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error_printf("out of memory\n");
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exit(EXIT_FAILURE);
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}
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}
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pt[numpoints].x = x;
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pt[numpoints].y = y;
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numpoints++;
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}
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void discard_top()
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{
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if(numpoints == 0) return;
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numpoints--;
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}
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void display(void)
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{
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glClear(GL_COLOR_BUFFER_BIT);
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// Draw points
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glLineWidth(3.0);
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glBegin(GL_POINTS);
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for(unsigned i = 0; i < numpoints; ++i) glVertex2d(pt[i].x, pt[i].y);
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glEnd();
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// Draw lines
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glLineWidth(1.0);
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glBegin(GL_LINE_STRIP);
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for(unsigned i = 0; i < numpoints; ++i) glVertex2d(pt[i].x, pt[i].y);
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glEnd();
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glFlush();
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}
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void handle_mouse(const int btn, const int state, const int x, const int y)
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{
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if(state != GLUT_DOWN) return;
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switch(btn) {
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case GLUT_LEFT_BUTTON:
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push_point(x, y);
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break;
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case GLUT_RIGHT_BUTTON:
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discard_top();
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break;
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default: break;
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}
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glutPostRedisplay();
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}
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void to_revolution()
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{
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init_geometry();
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shape_t *s = new_shape();
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for(unsigned i = 0; i < numpoints; ++i) {
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add_vertex(s, new_vertex(pt[i].x, WINDOW_HEIGHT-pt[i].y, 0));
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}
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new_revolution(s, DIVISION_NUMBER);
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flushOBJ(file_out);
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finalize_geometry();
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}
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void handle_keyboard(const unsigned char key, const int x, const int y)
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{
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#define KEY_ESC 27
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#define KEY_ENTER 13
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switch (key) {
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case KEY_ESC:
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case KEY_ENTER:
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to_revolution();
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exit(EXIT_SUCCESS);
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default:
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break;
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}
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}
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void reshape(const int w, const int h)
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{
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glViewport(0, 0, w, h);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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glOrtho(0.0, (float)w, (float)h, 0.0, -10.0, 10.0);
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glMatrixMode(GL_MODELVIEW);
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}
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int main(int argc, char *argv[])
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{
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if(argc < 2) {
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error_printf("missing file argument\n");
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fprintf(stderr, "usage : %s output_filename\n", argv[0]);
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exit(EXIT_FAILURE);
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}
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if((pt = malloc(capacity * sizeof(point_t))) == NULL) {
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error_printf("out of memory\n");
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exit(EXIT_FAILURE);
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}
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if((file_out = fopen(argv[1], "w")) == NULL) {
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error_printf("failed to open %s for write\n");
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FREE(pt);
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exit(EXIT_FAILURE);
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}
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glutInitWindowSize(600, WINDOW_HEIGHT);
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glutInitWindowPosition(10, 10);
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glutInit(&argc, argv);
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glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
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glutCreateWindow(argv[0]);
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glClearColor(1.0, 1.0, 1.0, 0.0);
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glColor3f(0.0, 0.0, 0.0);
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glPointSize(7.0);
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glutDisplayFunc(display);
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glutReshapeFunc(reshape);
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glutMouseFunc(handle_mouse);
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glutKeyboardFunc(handle_keyboard);
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glutMainLoop();
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return 0;
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}
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‎samples/snowman.png

93.4 KB
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‎samples/sphere.c

+14
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#include <stdio.h>
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#include "geometry.h"
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#include "solid.h"
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int main()
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{
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init_geometry();
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shape_t *s = new_sphere(50, 30, 30);
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flushOBJ(stdout);
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free_shape(s);
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finalize_geometry();
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return 0;
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}
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‎samples/taurus.c

+14
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#include <stdio.h>
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#include "geometry.h"
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#include "solid.h"
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int main()
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{
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init_geometry();
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shape_t *s = new_taurus(30, 15, 30, 30);
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flushOBJ(stdout);
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free_shape(s);
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finalize_geometry();
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return 0;
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}
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‎samples/wagasa.c

+25
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#include <stdio.h>
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#include "geometry.h"
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#include "solid.h"
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int main()
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{
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init_geometry();
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shape_t *s = new_shape();
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add_vertex(s, new_vertex(0, 300, 0));
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add_vertex(s, new_vertex(20, 300, 0));
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add_vertex(s, new_vertex(20, 290, 0));
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add_vertex(s, new_vertex(300, 220, 0));
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add_vertex(s, new_vertex(295, 218, 0));
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add_vertex(s, new_vertex(60, 260, 0));
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add_vertex(s, new_vertex(5, 220, 0));
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add_vertex(s, new_vertex(5, 0, 0));
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add_vertex(s, new_vertex(0, 0, 0));
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shape_t *u = new_revolution(s, 60);
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flushOBJ(stdout);
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free_shape(s);
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free_shape(u);
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finalize_geometry();
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return 0;
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}
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