generate square slots

This commit is contained in:
Trammell Hudson 2015-02-15 16:57:37 -05:00
parent 07cf132687
commit 362f1bcc2e

193
corners.c
View File

@ -14,6 +14,105 @@
#include "stl_3d.h" #include "stl_3d.h"
static void
make_faces(
const stl_3d_t * const stl,
const stl_vertex_t * const v,
const double thickness,
const double inset_dist,
const double hole_dist,
const double hole_rad
)
{
int * const face_used = calloc(sizeof(*face_used), stl->num_face);
const double hole_height = 40;
// generate all of the coplanar polygons at this vertex
const stl_vertex_t ** const vertex_list = calloc(sizeof(**vertex_list), stl->num_vertex);
for (int j = 0 ; j < v->num_face; j++)
{
// generate the polygon face for this vertex
const stl_face_t * const f = v->face[j];
if (face_used[f - stl->face])
continue;
const int start_vertex = v->face_num[j];
const int vertex_count = stl_trace_face(
stl,
f,
vertex_list,
face_used,
start_vertex
);
refframe_t ref;
refframe_init(&ref,
f->vertex[(start_vertex+0) % 3]->p,
f->vertex[(start_vertex+1) % 3]->p,
f->vertex[(start_vertex+2) % 3]->p
);
// use the transpose of the rotation matrix,
// which will rotate from (x,y) to the correct
// orientation relative to this connector node.
printf("multmatrix(m=[[%f,%f,%f,0],[%f,%f,%f,0],[%f,%f,%f,0],[0,0,0,1]]) {\n",
ref.x.p[0],
ref.y.p[0],
ref.z.p[0],
ref.x.p[1],
ref.y.p[1],
ref.z.p[1],
ref.x.p[2],
ref.y.p[2],
ref.z.p[2]
);
// generate the polygon plane
printf("translate([0,0,%f]) linear_extrude(height=%f) polygon(points=[\n",
-thickness/2,
thickness
);
for(int k=0 ; k < vertex_count ; k++)
{
double x, y;
refframe_inset(&ref, inset_dist, &x, &y,
vertex_list[(k+0) % vertex_count]->p,
vertex_list[(k+1) % vertex_count]->p,
vertex_list[(k+2) % vertex_count]->p
);
printf("[%f,%f],", x, y);
}
printf("\n]);\n");
// generate the mounting holes
if (hole_rad)
{
for(int k=0 ; k < vertex_count ; k++)
{
double x, y;
refframe_inset(&ref, inset_dist+hole_dist, &x, &y,
vertex_list[(k+0) % vertex_count]->p,
vertex_list[(k+1) % vertex_count]->p,
vertex_list[(k+2) % vertex_count]->p
);
printf("translate([%f,%f,0]) cylinder(r=%f,h=%f, center=true, $fs=1);\n",
x, y,
hole_rad,
hole_height
);
}
}
printf("}\n");
}
free(face_used);
free(vertex_list);
}
int int
main(void) main(void)
{ {
@ -28,100 +127,32 @@ main(void)
// for each vertex, find the coplanar triangles // for each vertex, find the coplanar triangles
// \todo: do coplanar bits // \todo: do coplanar bits
const stl_vertex_t ** const vertex_list = calloc(sizeof(**vertex_list), stl->num_vertex);
for(int i = 0 ; i < stl->num_vertex ; i++) for(int i = 18 ; i < stl->num_vertex ; i++)
{ {
const stl_vertex_t * const v = &stl->vertex[i]; const stl_vertex_t * const v = &stl->vertex[i];
const v3_t origin = v->p; const v3_t origin = v->p;
printf("// vertex %d\n" printf("// vertex %d\n"
"translate([%f,%f,%f])\n" "//translate([%f,%f,%f])\n"
"render() difference()\n" "render() difference()\n"
"{\n" "{\n"
"sphere(r=15);\n", "//sphere(r=%f);\n",
i, origin.p[0], origin.p[1], origin.p[2]); i, origin.p[0], origin.p[1], origin.p[2], thickness/2);
int * const face_used = calloc(sizeof(*face_used), stl->num_face); printf("render() intersection() {\n");
printf("sphere(r=20);\nunion() {\n");
make_faces(stl, v, 2*thickness, -thickness/2, 0, 0);
printf("}\n");
printf("}\n");
for (int j = 0 ; j < v->num_face; j++) make_faces(stl, v, thickness, inset_dist, hole_dist, hole_rad);
{
// generate the polygon face for this vertex
const stl_face_t * const f = v->face[j];
if (face_used[f - stl->face])
continue;
const int start_vertex = v->face_num[j];
const int vertex_count = stl_trace_face(
stl,
f,
vertex_list,
face_used,
start_vertex
);
refframe_t ref;
refframe_init(&ref,
f->vertex[(start_vertex+0) % 3]->p,
f->vertex[(start_vertex+1) % 3]->p,
f->vertex[(start_vertex+2) % 3]->p
);
// use the transpose of the rotation matrix,
// which will rotate from (x,y) to the correct
// orientation relative to this connector node.
printf("multmatrix(m=[[%f,%f,%f,0],[%f,%f,%f,0],[%f,%f,%f,0],[0,0,0,1]]) {\n",
ref.x.p[0],
ref.y.p[0],
ref.z.p[0],
ref.x.p[1],
ref.y.p[1],
ref.z.p[1],
ref.x.p[2],
ref.y.p[2],
ref.z.p[2]
);
// generate the polygon plane
printf("translate([0,0,%f]) linear_extrude(height=%f) polygon(points=[\n",
-thickness/2,
thickness
);
for(int k=0 ; k < vertex_count ; k++)
{
double x, y;
refframe_inset(&ref, inset_dist, &x, &y,
vertex_list[(k+0) % vertex_count]->p,
vertex_list[(k+1) % vertex_count]->p,
vertex_list[(k+2) % vertex_count]->p
);
printf("[%f,%f],", x, y);
}
printf("\n]);\n");
// generate the mounting holes
for(int k=0 ; k < vertex_count ; k++)
{
double x, y;
refframe_inset(&ref, inset_dist+hole_dist, &x, &y,
vertex_list[(k+0) % vertex_count]->p,
vertex_list[(k+1) % vertex_count]->p,
vertex_list[(k+2) % vertex_count]->p
);
printf("translate([%f,%f,0]) cylinder(r=%f,h=%f, center=true);\n",
x, y,
hole_rad,
hole_height
);
}
printf("}\n");
}
free(face_used);
printf("}\n"); printf("}\n");
//if (i == 2) break; // only do one right now
break;
//if (i == 0) break; // only do one right now
} }
return 0; return 0;