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Cleanup: de-duplicate quad_coord & resolve_quad_uv_v2

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Campbell Barton 2015-11-04 04:01:15 +11:00
parent 1fb512f4a9
commit 020fdeb760
1 changed files with 9 additions and 54 deletions
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63
source/blender/bmesh/intern/bmesh_interp.c
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@ -271,52 +271,13 @@ static int compute_mdisp_quad(
return 1;
}
/* funnily enough, I think this is identical to face_to_crn_interp, heh */
static float quad_coord(const float aa[3], const float bb[3], const float cc[3], const float dd[3], int a1, int a2)
{
float x, y, z, f1;
float div;
x = aa[a1] * cc[a2] - cc[a1] * aa[a2];
y = aa[a1] * dd[a2] + bb[a1] * cc[a2] - cc[a1] * bb[a2] - dd[a1] * aa[a2];
z = bb[a1] * dd[a2] - dd[a1] * bb[a2];
div = 2.0f * (x - y + z);
if (fabsf(div) > FLT_EPSILON * 10.0f) {
const float f_tmp = sqrtf(y * y - 4.0f * x * z);
f1 = min_ff(fabsf(( f_tmp - y + 2.0f * z) / div),
fabsf((-f_tmp - y + 2.0f * z) / div));
CLAMP_MAX(f1, 1.0f + FLT_EPSILON);
}
else {
f1 = -z / (y - 2 * z);
CLAMP(f1, 0.0f, 1.0f + FLT_EPSILON);
if (isnan(f1) || f1 > 1.0f || f1 < 0.0f) {
int i;
for (i = 0; i < 2; i++) {
if (fabsf(aa[i]) < FLT_EPSILON * 100.0f)
return aa[(i + 1) % 2] / fabsf(bb[(i + 1) % 2] - aa[(i + 1) % 2]);
if (fabsf(cc[i]) < FLT_EPSILON * 100.0f)
return cc[(i + 1) % 2] / fabsf(dd[(i + 1) % 2] - cc[(i + 1) % 2]);
}
}
}
return f1;
}
static int quad_co(
static bool quad_co(
const float v1[3], const float v2[3], const float v3[3], const float v4[3],
const float p[3], const float n[3],
float r_uv[2])
{
float projverts[5][3], n2[3];
float dprojverts[4][3], origin[3] = {0.0f, 0.0f, 0.0f};
float origin[2] = {0.0f, 0.0f};
int i;
/* project points into 2d along normal */
@ -329,7 +290,7 @@ static int quad_co(
normal_quad_v3(n2, projverts[0], projverts[1], projverts[2], projverts[3]);
if (dot_v3v3(n, n2) < -FLT_EPSILON) {
return 0;
return false;
}
/* rotate */
@ -337,22 +298,16 @@ static int quad_co(
/* subtract origin */
for (i = 0; i < 4; i++) {
sub_v3_v3(projverts[i], projverts[4]);
sub_v2_v2(projverts[i], projverts[4]);
}
copy_v3_v3(dprojverts[0], projverts[0]);
copy_v3_v3(dprojverts[1], projverts[1]);
copy_v3_v3(dprojverts[2], projverts[2]);
copy_v3_v3(dprojverts[3], projverts[3]);
if (!isect_point_quad_v2(origin, dprojverts[0], dprojverts[1], dprojverts[2], dprojverts[3])) {
return 0;
if (!isect_point_quad_v2(origin, projverts[0], projverts[1], projverts[2], projverts[3])) {
return false;
}
r_uv[0] = quad_coord(dprojverts[2], dprojverts[1], dprojverts[3], dprojverts[0], 0, 1);
r_uv[1] = quad_coord(dprojverts[1], dprojverts[0], dprojverts[2], dprojverts[3], 0, 1);
return 1;
resolve_quad_uv_v2(r_uv, origin, projverts[0], projverts[3], projverts[2], projverts[1]);
return true;
}
static void mdisp_axis_from_quad(