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/*
* Copyright 2011 Vincent Sanders <vince@kyllikki.org>
*
* Licenced under the MIT License,
* http://www.opensource.org/licenses/mit-license.php
*
* This file is part of png23d.
*
* Routines to handle meshes
*/
#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <assert.h>
#include "option.h"
#include "bitmap.h"
#include "mesh.h"
#include "mesh_gen.h"
#include "mesh_index.h"
#include "mesh_simplify.h"
#include "mesh_math.h"
void
debug_mesh_init(struct mesh *mesh, const char* filename)
{
if (filename == NULL)
return;
mesh->dumpfile = fopen(filename, "w");
if (mesh->dumpfile == NULL)
return;
fprintf(mesh->dumpfile,"<html>\n<body>");
}
static void
debug_mesh_fini(struct mesh *mesh, unsigned int start)
{
unsigned int floop;
struct vertex *v0 = vertex_from_index(mesh, start);
if (mesh->dumpfile == NULL)
return;
fprintf(mesh->dumpfile, "<h2>Final mesh</h2>");
fprintf(mesh->dumpfile,
"<p>Final mesh had %d facets and %d vertexes.</p>\n",
mesh->fcount, mesh->vcount);
fprintf(mesh->dumpfile,"<p>Mesh of all facets with common normal</p>\n<svg width=\"%d\" height=\"%d\" xmlns=\"http://www.w3.org/2000/svg\" version=\"1.1\">\n", DUMP_SVG_SIZE, DUMP_SVG_SIZE);
for (floop = 0; floop < mesh->fcount; floop++) {
if (same_normal(&mesh->f[floop].n, &v0->facets[0]->n)) {
fprintf(mesh->dumpfile,
"<polygon points=\"%.1f,%.1f %.1f,%.1f %.1f,%.1f\" style=\"fill:lime;stroke:black;stroke-width=1\"/>\n",
SVGPX(mesh->f[floop].v[0].x), SVGPY(mesh->f[floop].v[0].y),
SVGPX(mesh->f[floop].v[1].x), SVGPY(mesh->f[floop].v[1].y),
SVGPX(mesh->f[floop].v[2].x), SVGPY(mesh->f[floop].v[2].y));
/* label facet at centroid */
fprintf(mesh->dumpfile,
"<text x=\"%.1f\" y=\"%.1f\" fill=\"blue\">%u</text>\n",
(SVGPX(mesh->f[floop].v[0].x) +
SVGPX(mesh->f[floop].v[1].x) +
SVGPX(mesh->f[floop].v[2].x)) / 3,
(SVGPY(mesh->f[floop].v[0].y) +
SVGPY(mesh->f[floop].v[1].y) +
SVGPY(mesh->f[floop].v[2].y)) / 3,
floop);
}
}
fprintf(mesh->dumpfile,"</body>\n</html>\n");
fclose(mesh->dumpfile);
mesh->dumpfile = NULL;
}
/* exported method documented in mesh.h */
struct mesh *new_mesh(void)
{
struct mesh *mesh;
mesh = calloc(1, sizeof(struct mesh));
return mesh;
}
/* exported method documented in mesh.h */
void free_mesh(struct mesh *mesh)
{
debug_mesh_fini(mesh, 4);
free(mesh->bloom_table);
free(mesh->f);
}
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