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generate cylinders around each corner

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This commit is contained in:
Trammell Hudson 2015-05-03 15:12:32 -04:00
parent 20c000492f
commit 95a03c11fc
1 changed files with 60 additions and 29 deletions
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89
corners.c
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@ -48,21 +48,35 @@ print_multmatrix(
static void
make_faces(
const stl_3d_t * const stl,
const stl_vertex_t * const v,
const double thickness,
const double translate,
const double inset_dist,
const double hole_dist,
const double hole_rad,
const double hole_height
print_normal(
const v3_t * normal
)
{
int * const face_used = calloc(sizeof(*face_used), stl->num_face);
const float x = normal->p[0];
const float y = normal->p[1];
const float z = normal->p[2];
const double length = sqrt(x*x+y*y+z*z);
const double b = acos(z / length);
const double c = x == 0 ? sign(y)*90 : atan2(y,x);
printf("rotate([%f,%f,%f])\n", 0.0, b * 180 / M_PI, c * 180 / M_PI);
}
static void
find_normal(
const stl_3d_t * const stl,
const stl_vertex_t * const v,
const float inset_dist,
v3_t * const avg
)
{
int * const face_used
= calloc(sizeof(*face_used), stl->num_face);
// generate all of the coplanar polygons at this vertex
const stl_vertex_t ** const vertex_list = calloc(sizeof(**vertex_list), stl->num_vertex);
const stl_vertex_t ** const vertex_list
= calloc(sizeof(**vertex_list), stl->num_vertex);
for (int j = 0 ; j < v->num_face; j++)
{
@ -80,17 +94,29 @@ make_faces(
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
);
// find this vertex in the vertex list
// and compute the vector that subdivides the
// two outbound edges
for (int k = 0 ; k < vertex_count ; k++)
{
if (vertex_list[k] != v)
continue;
avg_x = v3_add(avg_x, ref.x);
avg_y = v3_add(avg_y, ref.y);
avg_z = v3_add(avg_z, ref.z);
v3_t p1 = vertex_list[(k+vertex_count-1) % vertex_count]->p;
v3_t p2 = vertex_list[k % vertex_count]->p;
v3_t p3 = vertex_list[(k+2) % vertex_count]->p;
*avg = v3_add(*avg, v3_norm(v3_sub(p2, p1)));
*avg = v3_add(*avg, v3_norm(v3_sub(p2, p3)));
//avg_x = v3_add(avg_x, ref.x);
//avg_y = v3_add(avg_y, ref.y);
//*avg = v3_add(*avg, p);
break;
}
}
#if 0
// use the transpose of the rotation matrix,
// which will rotate from (x,y) to the correct
// orientation relative to this connector node.
@ -139,6 +165,7 @@ make_faces(
printf("}\n");
}
#endif
free(face_used);
free(vertex_list);
@ -182,12 +209,13 @@ main(
const double hole_dist = 5;
const double hole_rad = 1.25;
// for face, generate the set of coplanar points that go with it
int * const face_used
= calloc(sizeof(*face_used), stl->num_face);
const stl_vertex_t ** const vertex_list
= calloc(sizeof(*vertex_list), stl->num_vertex);
// for face, generate the set of coplanar points that go with it
// and "drill" holes in the model for those corners.
for (int i = 0 ; i < stl->num_face ; i++)
{
if (face_used[i])
@ -252,21 +280,24 @@ main(
printf("}\n}\n");
printf("model();\n");
#if 0
// For each vertex, extract a small region around the corner
for(int i = 0 ; i < stl->num_vertex ; i++)
{
const stl_vertex_t * const v = &stl->vertex[i];
const v3_t origin = v->p;
// generate screw holes for each face connecting to this corner
v3_t avg = { 0, 0, 0};
find_normal(stl, v, inset_dist, &avg);
printf("%%translate([%f,%f,%f])",
origin.p[0], origin.p[1], origin.p[2]);
print_normal(&avg);
printf("cylinder(r=15,h=20, center=true);\n");
printf("//translate([%f,%f,%f])\n"
"module vertex_%d() {\n"
"render() difference()\n"
"{\n",
origin.p[0], origin.p[1], origin.p[2], i);
}
#if 0
avg_x.p[0] = avg_x.p[1] = avg_x.p[2] = 0;
avg_y.p[0] = avg_y.p[1] = avg_y.p[2] = 0;
avg_z.p[0] = avg_z.p[1] = avg_z.p[2] = 0;