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Math Lib: name signed versions of dist_to_plane_v3 explicitly

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also add unsigned versions
This commit is contained in:
Campbell Barton
2014-08-13 14:34:58 +10:00
parent 3e90d7971a
commit 3529913629
6 changed files with 26 additions and 11 deletions
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2
source/blender/blenkernel/intern/camera.c
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@@ -473,7 +473,7 @@ static void camera_to_frame_view_cb(const float co[3], void *user_data)
unsigned int i;
for (i = 0; i < 4; i++) {
float nd = dist_squared_to_plane_v3(co, data->plane_tx[i]);
float nd = dist_signed_squared_to_plane_v3(co, data->plane_tx[i]);
if (nd < data->dist_vals_sq[i]) {
data->dist_vals_sq[i] = nd;
}

7
source/blender/blenlib/BLI_math_geom.h
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@@ -86,8 +86,11 @@ float dist_squared_to_line_segment_v2(const float p[2], const float l1[2], const
float dist_to_line_segment_v2(const float p[2], const float l1[2], const float l2[2]);
void closest_to_line_segment_v2(float r_close[2], const float p[2], const float l1[2], const float l2[2]);
float dist_squared_to_plane_v3(const float p[3], const float plane[4]);
float dist_to_plane_v3(const float p[3], const float plane[4]);
float dist_signed_squared_to_plane_v3(const float p[3], const float plane[4]);
float dist_squared_to_plane_v3(const float p[3], const float plane[4]);
float dist_signed_to_plane_v3(const float p[3], const float plane[4]);
float dist_to_plane_v3(const float p[3], const float plane[4]);
float dist_squared_to_line_segment_v3(const float p[3], const float l1[3], const float l2[3]);
float dist_to_line_segment_v3(const float p[3], const float l1[3], const float l2[3]);
float dist_squared_to_line_v3(const float p[3], const float l1[3], const float l2[3]);

16
source/blender/blenlib/intern/math_geom.c
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@@ -376,24 +376,36 @@ void closest_to_plane_v3(float r_close[3], const float plane[4], const float pt[
madd_v3_v3v3fl(r_close, pt, plane, -side / len_sq);
}
float dist_squared_to_plane_v3(const float pt[3], const float plane[4])
float dist_signed_squared_to_plane_v3(const float pt[3], const float plane[4])
{
const float len_sq = len_squared_v3(plane);
const float side = plane_point_side_v3(plane, pt);
const float fac = side / len_sq;
return copysignf(len_sq * (fac * fac), side);
}
float dist_squared_to_plane_v3(const float pt[3], const float plane[4])
{
const float len_sq = len_squared_v3(plane);
const float side = plane_point_side_v3(plane, pt);
const float fac = side / len_sq;
/* only difference to code above - no 'copysignf' */
return len_sq * (fac * fac);
}
/**
* Return the signed distance from the point to the plane.
*/
float dist_to_plane_v3(const float pt[3], const float plane[4])
float dist_signed_to_plane_v3(const float pt[3], const float plane[4])
{
const float len_sq = len_squared_v3(plane);
const float side = plane_point_side_v3(plane, pt);
const float fac = side / len_sq;
return sqrtf(len_sq) * fac;
}
float dist_to_plane_v3(const float pt[3], const float plane[4])
{
return fabsf(dist_signed_to_plane_v3(pt, plane));
}
/* distance v1 to line-piece l1-l2 in 3D */
float dist_squared_to_line_segment_v3(const float p[3], const float l1[3], const float l2[3])

4
source/blender/editors/mesh/editmesh_knife.c
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@@ -1120,8 +1120,8 @@ static bool knife_ray_intersect_face(KnifeTool_OpData *kcd,
/* check if line coplanar with tri */
normal_tri_v3(tri_norm, lv1, lv2, lv3);
plane_from_point_normal_v3(tri_plane, lv1, tri_norm);
if ((fabsf(dist_squared_to_plane_v3(v1, tri_plane)) < KNIFE_FLT_EPS) &&
(fabsf(dist_squared_to_plane_v3(v2, tri_plane)) < KNIFE_FLT_EPS))
if ((dist_squared_to_plane_v3(v1, tri_plane) < KNIFE_FLT_EPS) &&
(dist_squared_to_plane_v3(v2, tri_plane) < KNIFE_FLT_EPS))
{
return false;
}

6
source/blender/modifiers/intern/MOD_screw.c
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@@ -362,7 +362,7 @@ static DerivedMesh *applyModifier(ModifierData *md, Object *ob,
if (ltmd->flag & MOD_SCREW_UV_STRETCH_V) {
for (i = 0, mv_orig = mvert_orig; i < totvert; i++, mv_orig++) {
const float v = dist_squared_to_plane_v3(mv_orig->co, uv_axis_plane);
const float v = dist_signed_squared_to_plane_v3(mv_orig->co, uv_axis_plane);
uv_v_minmax[0] = min_ff(v, uv_v_minmax[0]);
uv_v_minmax[1] = max_ff(v, uv_v_minmax[1]);
}
@@ -897,8 +897,8 @@ static DerivedMesh *applyModifier(ModifierData *md, Object *ob,
}
if (has_mloop_orig == false && mloopuv_layers_tot) {
uv_v_offset_a = dist_to_plane_v3(mvert_new[medge_new[i].v1].co, uv_axis_plane);
uv_v_offset_b = dist_to_plane_v3(mvert_new[medge_new[i].v2].co, uv_axis_plane);
uv_v_offset_a = dist_signed_to_plane_v3(mvert_new[medge_new[i].v1].co, uv_axis_plane);
uv_v_offset_b = dist_signed_to_plane_v3(mvert_new[medge_new[i].v2].co, uv_axis_plane);
if (ltmd->flag & MOD_SCREW_UV_STRETCH_V) {
uv_v_offset_a = (uv_v_offset_a - uv_v_minmax[0]) * uv_v_range_inv;

2
source/blender/python/mathutils/mathutils_geometry.c
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@@ -1082,7 +1082,7 @@ static PyObject *M_Geometry_distance_point_to_plane(PyObject *UNUSED(self), PyOb
}
plane_from_point_normal_v3(plane, plane_co->vec, plane_no->vec);
return PyFloat_FromDouble(dist_to_plane_v3(pt->vec, plane));
return PyFloat_FromDouble(dist_signed_to_plane_v3(pt->vec, plane));
}
PyDoc_STRVAR(M_Geometry_barycentric_transform_doc,