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mathutils.geometry.distance_point_to_plane(pt, plane_co, plane_no) - utility function, BLI math version too.

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This commit is contained in:
Campbell Barton
2011-11-12 10:06:56 +00:00
parent e2c06d5fc9
commit 817b6cb9a8
3 changed files with 53 additions and 3 deletions
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43
source/blender/python/mathutils/mathutils_geometry.c
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@@ -420,7 +420,7 @@ static PyObject *M_Geometry_intersect_line_plane(PyObject *UNUSED(self), PyObjec
return NULL;
}
if ( BaseMath_ReadCallback(line_a) == -1 ||
if ( BaseMath_ReadCallback(line_a) == -1 ||
BaseMath_ReadCallback(line_b) == -1 ||
BaseMath_ReadCallback(plane_co) == -1 ||
BaseMath_ReadCallback(plane_no) == -1
@@ -559,7 +559,7 @@ static PyObject *M_Geometry_intersect_line_sphere_2d(PyObject *UNUSED(self), PyO
return NULL;
}
if ( BaseMath_ReadCallback(line_a) == -1 ||
if ( BaseMath_ReadCallback(line_a) == -1 ||
BaseMath_ReadCallback(line_b) == -1 ||
BaseMath_ReadCallback(sphere_co) == -1
) {
@@ -686,7 +686,7 @@ PyDoc_STRVAR(M_Geometry_intersect_point_quad_2d_doc,
" Takes 5 vectors (using only the x and y coordinates): one is the point and the next 4 define the quad, only the x and y are used from the vectors. Returns 1 if the point is within the quad, otherwise 0.\n"
"\n"
" :arg pt: Point\n"
" :type v1: :class:`mathutils.Vector`\n"
" :type pt: :class:`mathutils.Vector`\n"
" :arg quad_p1: First point of the quad\n"
" :type quad_p1: :class:`mathutils.Vector`\n"
" :arg quad_p2: Second point of the quad\n"
@@ -717,6 +717,42 @@ static PyObject *M_Geometry_intersect_point_quad_2d(PyObject *UNUSED(self), PyOb
return PyLong_FromLong(isect_point_quad_v2(pt_vec->vec, quad_p1->vec, quad_p2->vec, quad_p3->vec, quad_p4->vec));
}
PyDoc_STRVAR(M_Geometry_distance_point_to_plane_doc,
".. function:: distance_point_to_plane(pt, plane_co, plane_no)\n"
"\n"
" Returns the signed distance between a point and a plane "
" (negative when below the normal).\n"
"\n"
" :arg pt: Point\n"
" :type pt: :class:`mathutils.Vector`\n"
" :arg plane_co: First point of the quad\n"
" :type plane_co: :class:`mathutils.Vector`\n"
" :arg plane_no: Second point of the quad\n"
" :type plane_no: :class:`mathutils.Vector`\n"
" :rtype: float\n"
);
static PyObject *M_Geometry_distance_point_to_plane(PyObject *UNUSED(self), PyObject* args)
{
VectorObject *pt, *plene_co, *plane_no;
if (!PyArg_ParseTuple(args, "O!O!O!:distance_point_to_plane",
&vector_Type, &pt,
&vector_Type, &plene_co,
&vector_Type, &plane_no)
) {
return NULL;
}
if ( BaseMath_ReadCallback(pt) == -1 ||
BaseMath_ReadCallback(plene_co) == -1 ||
BaseMath_ReadCallback(plane_no) == -1)
{
return NULL;
}
return PyFloat_FromDouble(dist_to_plane_v3(pt->vec, plene_co->vec, plane_no->vec));
}
PyDoc_STRVAR(M_Geometry_barycentric_transform_doc,
".. function:: barycentric_transform(point, tri_a1, tri_a2, tri_a3, tri_b1, tri_b2, tri_b3)\n"
"\n"
@@ -1103,6 +1139,7 @@ static PyMethodDef M_Geometry_methods[]= {
{"intersect_line_plane", (PyCFunction) M_Geometry_intersect_line_plane, METH_VARARGS, M_Geometry_intersect_line_plane_doc},
{"intersect_line_sphere", (PyCFunction) M_Geometry_intersect_line_sphere, METH_VARARGS, M_Geometry_intersect_line_sphere_doc},
{"intersect_line_sphere_2d", (PyCFunction) M_Geometry_intersect_line_sphere_2d, METH_VARARGS, M_Geometry_intersect_line_sphere_2d_doc},
{"distance_point_to_plane", (PyCFunction) M_Geometry_distance_point_to_plane, METH_VARARGS, M_Geometry_distance_point_to_plane_doc},
{"area_tri", (PyCFunction) M_Geometry_area_tri, METH_VARARGS, M_Geometry_area_tri_doc},
{"normal", (PyCFunction) M_Geometry_normal, METH_VARARGS, M_Geometry_normal_doc},
{"barycentric_transform", (PyCFunction) M_Geometry_barycentric_transform, METH_VARARGS, M_Geometry_barycentric_transform_doc},