computational-geometry-in-c/src/main.c

#include <stdio.h>

#include "vertex.h"
#include "math.h"

void chapter1() {
    // Initialize our chapter 1 polygon
    struct Vertex *v0  = new_vertex(0, 0, 0);
    struct Vertex *v1  = new_vertex(1, 10, 7);
    struct Vertex *v2  = new_vertex(2, 12, 3);
    struct Vertex *v3  = new_vertex(3, 20, 8);
    struct Vertex *v4  = new_vertex(4, 13, 17);
    struct Vertex *v5  = new_vertex(5, 10, 12);
    struct Vertex *v6  = new_vertex(6, 12, 14);
    struct Vertex *v7  = new_vertex(7, 14, 9);
    struct Vertex *v8  = new_vertex(8, 8, 10);
    struct Vertex *v9  = new_vertex(9, 6, 14);
    struct Vertex *v10 = new_vertex(10, 10, 15);
    struct Vertex *v11 = new_vertex(11, 7, 18);
    struct Vertex *v12 = new_vertex(12, 0, 16);
    struct Vertex *v13 = new_vertex(13, 1, 13);
    struct Vertex *v14 = new_vertex(14, 3, 15);
    struct Vertex *v15 = new_vertex(15, 5, 8);
    struct Vertex *v16 = new_vertex(16, -2, 9);
    struct Vertex *v17 = new_vertex(17, 5, 5);

    // TODO: You may be able to change this back to normal as long as you're
    //       using -> to set the value on the struct. This is interpreted
    //       as (*thing).xyz so you are doing too much work on pointers
    //       in this.
    add_vertex(&v0, &v0, &v1);
    add_vertex(&v0, &v1, &v2);
    add_vertex(&v0, &v2, &v3);
    add_vertex(&v0, &v3, &v4);
    add_vertex(&v0, &v4, &v5);
    add_vertex(&v0, &v5, &v6);
    add_vertex(&v0, &v6, &v7);
    add_vertex(&v0, &v7, &v8);
    add_vertex(&v0, &v8, &v9);
    add_vertex(&v0, &v9, &v10);
    add_vertex(&v0, &v10, &v11);
    add_vertex(&v0, &v11, &v12);
    add_vertex(&v0, &v12, &v13);
    add_vertex(&v0, &v13, &v14);
    add_vertex(&v0, &v14, &v15);
    add_vertex(&v0, &v15, &v16);
    add_vertex(&v0, &v16, &v17);

    init_ear(v0);

    print_polygon(v0);

    triangulate(v0);

    //print_polygon(v0);

    free_polygon(&v0);
}

int main()
{
    chapter1();
    return 0;
}