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more compact code for recent sphere/line intersection functions.

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This commit is contained in:
Campbell Barton
2011-06-26 17:16:06 +00:00
parent 1186bdfc08
commit 31f0b6639a
1 changed files with 52 additions and 71 deletions
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123
source/blender/python/generic/mathutils_geometry.c
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@@ -1,4 +1,4 @@
/*
/*
* $Id$
*
* ***** BEGIN GPL LICENSE BLOCK *****
@@ -573,11 +573,9 @@ PyDoc_STRVAR(M_Geometry_intersect_line_sphere_doc,
);
static PyObject *M_Geometry_intersect_line_sphere(PyObject *UNUSED(self), PyObject* args)
{
PyObject *ret;
VectorObject *line_a, *line_b, *sphere_co;
float sphere_radius;
int clip= TRUE;
float lambda;
float isect_a[3];
float isect_b[3];
@@ -602,45 +600,38 @@ static PyObject *M_Geometry_intersect_line_sphere(PyObject *UNUSED(self), PyObje
PyErr_SetString(PyExc_RuntimeError, "geometry.intersect_line_sphere(...) can't use 2D Vectors");
return NULL;
}
else {
short use_a= TRUE;
short use_b= TRUE;
float lambda;
ret= PyTuple_New(2);
PyObject *ret= PyTuple_New(2);
switch(isect_line_sphere_v3(line_a->vec, line_b->vec, sphere_co->vec, sphere_radius, isect_a, isect_b)) {
case 1:
/* ret 1 */
if(!clip || (((lambda= line_point_factor_v3(isect_a, line_a->vec, line_b->vec)) >= 0.0f) && (lambda <= 1.0f))) {
PyTuple_SET_ITEM(ret, 0, newVectorObject(isect_a, 3, Py_NEW, NULL));
switch(isect_line_sphere_v3(line_a->vec, line_b->vec, sphere_co->vec, sphere_radius, isect_a, isect_b)) {
case 1:
if(!(!clip || (((lambda= line_point_factor_v3(isect_a, line_a->vec, line_b->vec)) >= 0.0f) && (lambda <= 1.0f)))) use_a= FALSE;
use_b= FALSE;
break;
case 2:
if(!(!clip || (((lambda= line_point_factor_v3(isect_a, line_a->vec, line_b->vec)) >= 0.0f) && (lambda <= 1.0f)))) use_a= FALSE;
if(!(!clip || (((lambda= line_point_factor_v3(isect_b, line_a->vec, line_b->vec)) >= 0.0f) && (lambda <= 1.0f)))) use_b= FALSE;
break;
default:
use_a= FALSE;
use_b= FALSE;
}
else {
PyTuple_SET_ITEM(ret, 0, Py_None); Py_INCREF(Py_None);
}
/* ret 2 */
PyTuple_SET_ITEM(ret, 1, Py_None); Py_INCREF(Py_None);
break;
case 2:
/* ret 1 */
if(!clip || (((lambda= line_point_factor_v3(isect_a, line_a->vec, line_b->vec)) >= 0.0f) && (lambda <= 1.0f))) {
PyTuple_SET_ITEM(ret, 0, newVectorObject(isect_a, 3, Py_NEW, NULL));
}
else {
PyTuple_SET_ITEM(ret, 0, Py_None); Py_INCREF(Py_None);
}
/* ret 2 */
if(!clip || (((lambda= line_point_factor_v3(isect_b, line_a->vec, line_b->vec)) >= 0.0f) && (lambda <= 1.0f))) {
PyTuple_SET_ITEM(ret, 1, newVectorObject(isect_b, 3, Py_NEW, NULL));
}
else {
PyTuple_SET_ITEM(ret, 1, Py_None); Py_INCREF(Py_None);
}
break;
default:
PyTuple_SET_ITEM(ret, 0, Py_None); Py_INCREF(Py_None);
PyTuple_SET_ITEM(ret, 1, Py_None); Py_INCREF(Py_None);
if(use_a) { PyTuple_SET_ITEM(ret, 0, newVectorObject(isect_a, 3, Py_NEW, NULL)); }
else { PyTuple_SET_ITEM(ret, 0, Py_None); Py_INCREF(Py_None); }
if(use_b) { PyTuple_SET_ITEM(ret, 1, newVectorObject(isect_b, 3, Py_NEW, NULL)); }
else { PyTuple_SET_ITEM(ret, 1, Py_None); Py_INCREF(Py_None); }
return ret;
}
return ret;
}
/* keep in sync with M_Geometry_intersect_line_sphere */
PyDoc_STRVAR(M_Geometry_intersect_line_sphere_2d_doc,
".. function:: intersect_line_sphere_2d(line_a, line_b, sphere_co, sphere_radius, clip=True)\n"
"\n"
@@ -660,11 +651,9 @@ PyDoc_STRVAR(M_Geometry_intersect_line_sphere_2d_doc,
);
static PyObject *M_Geometry_intersect_line_sphere_2d(PyObject *UNUSED(self), PyObject* args)
{
PyObject *ret;
VectorObject *line_a, *line_b, *sphere_co;
float sphere_radius;
int clip= TRUE;
float lambda;
float isect_a[3];
float isect_b[3];
@@ -684,43 +673,35 @@ static PyObject *M_Geometry_intersect_line_sphere_2d(PyObject *UNUSED(self), PyO
) {
return NULL;
}
else {
short use_a= TRUE;
short use_b= TRUE;
float lambda;
ret= PyTuple_New(2);
PyObject *ret= PyTuple_New(2);
switch(isect_line_sphere_v2(line_a->vec, line_b->vec, sphere_co->vec, sphere_radius, isect_a, isect_b)) {
case 1:
/* ret 1 */
if(!clip || (((lambda= line_point_factor_v3(isect_a, line_a->vec, line_b->vec)) >= 0.0f) && (lambda <= 1.0f))) {
PyTuple_SET_ITEM(ret, 0, newVectorObject(isect_a, 2, Py_NEW, NULL));
switch(isect_line_sphere_v3(line_a->vec, line_b->vec, sphere_co->vec, sphere_radius, isect_a, isect_b)) {
case 1:
if(!(!clip || (((lambda= line_point_factor_v2(isect_a, line_a->vec, line_b->vec)) >= 0.0f) && (lambda <= 1.0f)))) use_a= FALSE;
use_b= FALSE;
break;
case 2:
if(!(!clip || (((lambda= line_point_factor_v2(isect_a, line_a->vec, line_b->vec)) >= 0.0f) && (lambda <= 1.0f)))) use_a= FALSE;
if(!(!clip || (((lambda= line_point_factor_v2(isect_b, line_a->vec, line_b->vec)) >= 0.0f) && (lambda <= 1.0f)))) use_b= FALSE;
break;
default:
use_a= FALSE;
use_b= FALSE;
}
else {
PyTuple_SET_ITEM(ret, 0, Py_None); Py_INCREF(Py_None);
}
/* ret 2 */
PyTuple_SET_ITEM(ret, 1, Py_None); Py_INCREF(Py_None);
break;
case 2:
/* ret 1 */
if(!clip || (((lambda= line_point_factor_v3(isect_a, line_a->vec, line_b->vec)) >= 0.0f) && (lambda <= 1.0f))) {
PyTuple_SET_ITEM(ret, 0, newVectorObject(isect_a, 2, Py_NEW, NULL));
}
else {
PyTuple_SET_ITEM(ret, 0, Py_None); Py_INCREF(Py_None);
}
/* ret 2 */
if(!clip || (((lambda= line_point_factor_v3(isect_b, line_a->vec, line_b->vec)) >= 0.0f) && (lambda <= 1.0f))) {
PyTuple_SET_ITEM(ret, 1, newVectorObject(isect_b, 2, Py_NEW, NULL));
}
else {
PyTuple_SET_ITEM(ret, 1, Py_None); Py_INCREF(Py_None);
}
break;
default:
PyTuple_SET_ITEM(ret, 0, Py_None); Py_INCREF(Py_None);
PyTuple_SET_ITEM(ret, 1, Py_None); Py_INCREF(Py_None);
if(use_a) { PyTuple_SET_ITEM(ret, 0, newVectorObject(isect_a, 2, Py_NEW, NULL)); }
else { PyTuple_SET_ITEM(ret, 0, Py_None); Py_INCREF(Py_None); }
if(use_b) { PyTuple_SET_ITEM(ret, 1, newVectorObject(isect_b, 2, Py_NEW, NULL)); }
else { PyTuple_SET_ITEM(ret, 1, Py_None); Py_INCREF(Py_None); }
return ret;
}
return ret;
}
PyDoc_STRVAR(M_Geometry_intersect_point_line_doc,