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transform and perspective works with lookat function, not sure about anything else

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This commit is contained in:
Trammell hudson 2018-02-26 23:30:39 -05:00
parent d78175a07a
commit 7391a667fe
Failed to extract signature
1 changed files with 30 additions and 23 deletions
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53
hiddenwire.c
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@ -453,26 +453,24 @@ recursive++;
// make sure that we're not comparing to our own triangle
// or one that shares an edge with us (which might be in
// a different order)
/*
if (v2_eq(s->src[0].p, t->p[0].p, 0.005)
&& v2_eq(s->src[1].p, t->p[1].p, 0.005))
if (v2_eq(s->src[0].p, t->p[0].p, 0.0005)
&& v2_eq(s->src[1].p, t->p[1].p, 0.0005))
continue;
if (v2_eq(s->src[0].p, t->p[1].p, 0.005)
&& v2_eq(s->src[1].p, t->p[2].p, 0.005))
if (v2_eq(s->src[0].p, t->p[1].p, 0.0005)
&& v2_eq(s->src[1].p, t->p[2].p, 0.0005))
continue;
if (v2_eq(s->src[0].p, t->p[2].p, 0.005)
&& v2_eq(s->src[1].p, t->p[0].p, 0.005))
if (v2_eq(s->src[0].p, t->p[2].p, 0.0005)
&& v2_eq(s->src[1].p, t->p[0].p, 0.0005))
continue;
if (v2_eq(s->src[0].p, t->p[1].p, 0.005)
&& v2_eq(s->src[1].p, t->p[0].p, 0.005))
if (v2_eq(s->src[0].p, t->p[1].p, 0.0005)
&& v2_eq(s->src[1].p, t->p[0].p, 0.0005))
continue;
if (v2_eq(s->src[0].p, t->p[2].p, 0.005)
&& v2_eq(s->src[1].p, t->p[1].p, 0.005))
if (v2_eq(s->src[0].p, t->p[2].p, 0.0005)
&& v2_eq(s->src[1].p, t->p[1].p, 0.0005))
continue;
if (v2_eq(s->src[0].p, t->p[0].p, 0.005)
&& v2_eq(s->src[1].p, t->p[2].p, 0.005))
if (v2_eq(s->src[0].p, t->p[0].p, 0.0005)
&& v2_eq(s->src[1].p, t->p[2].p, 0.0005))
continue;
*/
float z0, z1;
int inside0 = tri_find_z(t, &s->p[0], &z0);
@ -605,12 +603,16 @@ recursive++;
{
// shorten it on the 0 side
s->p[0] = is[0];
// huh? shouldn't we process this one?
return;
continue;
} else
if (inside1)
{
// shorten it on the 1 side
s->p[1] = is[0];
// huh? shouldn't we process this one?
return;
continue;
} else {
// both outside, but an intersection?
@ -644,10 +646,7 @@ int main(
const size_t max_len = 32 << 20;
uint8_t * const buf = calloc(max_len, 1);
float phi = argc > 1 ? atof(argv[1]) * M_PI/180 : 0;
float theta = argc > 2 ? atof(argv[2]) * M_PI/180 : 0;
float psi = argc > 3 ? atof(argv[3]) * M_PI/180 : 0;
int filter_level = argc > 4 ? atoi(argv[4]) : 4;
int filter_level = argc > 4 ? atoi(argv[4]) : 1;
ssize_t rc = read(0, buf, max_len);
if (rc == -1)
@ -657,9 +656,9 @@ int main(
const stl_face_t * const stl_faces = (const void*)(hdr+1);
const int num_triangles = hdr->num_triangles;
int backface = filter_level > 0;
int hidden = filter_level > 1;
int coplanar = filter_level > 2;
int backface = filter_level & 1;
int hidden = filter_level & 2;
int coplanar = filter_level & 4;
float coplanar_eps = 0.001;
if(debug)
@ -670,8 +669,10 @@ int main(
// looking at (0,0,0)
v3_t eye = { { 0, 0, 400 } };
const camera_t * const cam = camera_new(eye, phi, theta, psi);
v3_t eye = { { 100, 20, 50 } };
v3_t lookat = { { 0, 0, 0 } };
v3_t up = { { 0, 0, 1 } };
const camera_t * const cam = camera_new(eye, lookat, up);
printf("<svg xmlns=\"http://www.w3.org/2000/svg\">\n");
@ -695,7 +696,9 @@ int main(
v3_t s[3];
for(int j = 0 ; j < 3 ; j++)
{
camera_project(cam, &stl->p[j], &s[j]);
}
if(0)fprintf(stderr, "%.3f,%.3f,%.3f -> %.0f,%.0f\n",
stl->p[0].p[0],
@ -776,8 +779,12 @@ reject:
if(hidden)
{
// work on each segment, intersecting it with all of the triangles
int processed = 0;
while(slist)
{
if (++processed % 100 == 0)
fprintf(stderr, "Hidden %d\n", processed);
seg_t * s = slist;
slist = s->next;