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* $Id: CurNurb.c,v 1.11 2005/06/13 19:15:01 stiv Exp $
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* ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version. The Blender
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* Foundation also sells licenses for use in proprietary software under
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* the Blender License. See http://www.blender.org/BL/ for information
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
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* All rights reserved.
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* This is a new part of Blender.
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* Contributor(s): Stephen Swaney
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* ***** END GPL/BL DUAL LICENSE BLOCK *****
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#include "DNA_curve_types.h"
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#include "BKE_curve.h"
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#include "BDR_editcurve.h" /* for convertspline */
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#include "MEM_guardedalloc.h"
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#include "gen_utils.h"
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#include "BezTriple.h"
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* forward declarations go here
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static PyObject *M_CurNurb_New( PyObject * self, PyObject * args );
49
PyObject *CurNurb_CreatePyObject( Nurb * blen_nurb );
50
static PyObject *CurNurb_setMatIndex( BPy_CurNurb * self, PyObject * args );
51
static PyObject *CurNurb_getMatIndex( BPy_CurNurb * self );
52
static PyObject *CurNurb_getFlagU( BPy_CurNurb * self );
53
static PyObject *CurNurb_setFlagU( BPy_CurNurb * self, PyObject * args );
54
static PyObject *CurNurb_getFlagV( BPy_CurNurb * self );
55
static PyObject *CurNurb_setFlagV( BPy_CurNurb * self, PyObject * args );
56
static PyObject *CurNurb_getType( BPy_CurNurb * self );
57
static PyObject *CurNurb_setType( BPy_CurNurb * self, PyObject * args );
58
/* static PyObject* CurNurb_setXXX( BPy_CurNurb* self, PyObject* args ); */
59
PyObject *CurNurb_getPoint( BPy_CurNurb * self, int index );
60
static int CurNurb_setPoint( BPy_CurNurb * self, int index, PyObject * ob );
61
static int CurNurb_length( PyInstanceObject * inst );
62
static PyObject *CurNurb_getIter( BPy_CurNurb * self );
63
static PyObject *CurNurb_iterNext( BPy_CurNurb * self );
64
PyObject *CurNurb_append( BPy_CurNurb * self, PyObject * args );
65
PyObject *CurNurb_pointAtIndex( Nurb * nurb, int index );
66
static PyObject *CurNurb_isNurb( BPy_CurNurb * self );
67
static PyObject *CurNurb_isCyclic( BPy_CurNurb * self );
68
static PyObject *CurNurb_dump( BPy_CurNurb * self );
70
char M_CurNurb_doc[] = "CurNurb";
74
CurNurb_Type callback function prototypes:
77
static void CurNurb_dealloc( BPy_CurNurb * self );
78
static int CurNurb_compare( BPy_CurNurb * a, BPy_CurNurb * b );
79
static PyObject *CurNurb_getAttr( BPy_CurNurb * self, char *name );
80
static int CurNurb_setAttr( BPy_CurNurb * self, char *name, PyObject * v );
81
static PyObject *CurNurb_repr( BPy_CurNurb * self );
86
table of module methods
87
these are the equivalent of class or static methods.
88
you do not need an object instance to call one.
92
static PyMethodDef M_CurNurb_methods[] = {
93
/* name, method, flags, doc_string */
94
{"New", ( PyCFunction ) M_CurNurb_New, METH_VARARGS | METH_KEYWORDS,
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/* {"Get", (PyCFunction) M_CurNurb_method, METH_NOARGS, " () - doc string"}, */
97
/* {"method", (PyCFunction) M_CurNurb_method, METH_NOARGS, " () - doc string"}, */
106
* table of instance methods
107
* these methods are invoked on an instance of the type.
110
static PyMethodDef BPy_CurNurb_methods[] = {
111
/* name, method, flags, doc */
112
/* {"method", (PyCFunction) CurNurb_method, METH_NOARGS, " () - doc string"} */
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{"setMatIndex", ( PyCFunction ) CurNurb_setMatIndex, METH_VARARGS,
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"( index ) - set index into materials list"},
115
{"getMatIndex", ( PyCFunction ) CurNurb_getMatIndex, METH_NOARGS,
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"( ) - get current material index"},
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{"setFlagU", ( PyCFunction ) CurNurb_setFlagU, METH_VARARGS,
118
"( index ) - set flagU and recalculate the knots (0: uniform, 1: endpoints, 2: bezier)"},
119
{"getFlagU", ( PyCFunction ) CurNurb_getFlagU, METH_NOARGS,
120
"( ) - get flagU of the knots"},
121
{"setFlagV", ( PyCFunction ) CurNurb_setFlagV, METH_VARARGS,
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"( index ) - set flagV and recalculate the knots (0: uniform, 1: endpoints, 2: bezier)"},
123
{"getFlagV", ( PyCFunction ) CurNurb_getFlagV, METH_NOARGS,
124
"( ) - get flagV of the knots"},
125
{"setType", ( PyCFunction ) CurNurb_setType, METH_VARARGS,
126
"( type ) - change the type of the curve (Poly: 0, Bezier: 1, NURBS: 4)"},
127
{"getType", ( PyCFunction ) CurNurb_getType, METH_NOARGS,
128
"( ) - get the type of the curve (Poly: 0, Bezier: 1, NURBS: 4)"},
129
{"append", ( PyCFunction ) CurNurb_append, METH_VARARGS,
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"( point ) - add a new point. arg is BezTriple or list of x,y,z,w floats"},
131
{"isNurb", ( PyCFunction ) CurNurb_isNurb, METH_NOARGS,
132
"( ) - boolean function tests if this spline is type nurb or bezier"},
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{"isCyclic", ( PyCFunction ) CurNurb_isCyclic, METH_NOARGS,
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"( ) - boolean function tests if this spline is cyclic (closed) or not (open)"},
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{"dump", ( PyCFunction ) CurNurb_dump, METH_NOARGS,
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"( ) - dumps Nurb data)"},
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{NULL, NULL, 0, NULL}
141
* methods for CurNurb as sequece
144
static PySequenceMethods CurNurb_as_sequence = {
145
( inquiry ) CurNurb_length, /* sq_length */
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( binaryfunc ) 0, /* sq_concat */
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( intargfunc ) 0, /* sq_repeat */
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( intargfunc ) CurNurb_getPoint, /* sq_item */
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( intintargfunc ) 0, /* sq_slice */
150
( intobjargproc ) CurNurb_setPoint, /* sq_ass_item */
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0, /* sq_ass_slice */
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( objobjproc ) 0, /* sq_contains */
160
Object Type definition
161
full blown 2.3 struct
162
if you are having trouble building with an earlier version of python,
166
PyTypeObject CurNurb_Type = {
167
PyObject_HEAD_INIT( NULL ) /* required py macro */
169
/* For printing, in format "<module>.<name>" */
170
"CurNurb", /* char *tp_name; */
171
sizeof( CurNurb_Type ), /* int tp_basicsize, */
172
0, /* tp_itemsize; For allocation */
174
/* Methods to implement standard operations */
176
( destructor ) CurNurb_dealloc, /* destructor tp_dealloc; */
177
0, /* printfunc tp_print; */
178
( getattrfunc ) CurNurb_getAttr, /* getattrfunc tp_getattr; */
179
( setattrfunc ) CurNurb_setAttr, /* setattrfunc tp_setattr; */
180
( cmpfunc ) CurNurb_compare, /* cmpfunc tp_compare; */
181
( reprfunc ) CurNurb_repr, /* reprfunc tp_repr; */
183
/* Method suites for standard classes */
185
0, /* PyNumberMethods *tp_as_number; */
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&CurNurb_as_sequence, /* PySequenceMethods *tp_as_sequence; */
187
0, /* PyMappingMethods *tp_as_mapping; */
189
/* More standard operations (here for binary compatibility) */
191
0, /* hashfunc tp_hash; */
192
0, /* ternaryfunc tp_call; */
193
0, /* reprfunc tp_str; */
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0, /* getattrofunc tp_getattro; */
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0, /* setattrofunc tp_setattro; */
197
/* Functions to access object as input/output buffer */
198
0, /* PyBufferProcs *tp_as_buffer; */
200
/*** Flags to define presence of optional/expanded features ***/
201
Py_TPFLAGS_DEFAULT, /* long tp_flags; */
203
0, /* char *tp_doc; Documentation string */
204
/*** Assigned meaning in release 2.0 ***/
205
/* call function for all accessible objects */
206
0, /* traverseproc tp_traverse; */
208
/* delete references to contained objects */
209
0, /* inquiry tp_clear; */
211
/*** Assigned meaning in release 2.1 ***/
212
/*** rich comparisons ***/
213
0, /* richcmpfunc tp_richcompare; */
215
/*** weak reference enabler ***/
216
0, /* long tp_weaklistoffset; */
218
/*** Added in release 2.2 ***/
220
( getiterfunc ) CurNurb_getIter, /* getiterfunc tp_iter; */
221
( iternextfunc ) CurNurb_iterNext, /* iternextfunc tp_iternext; */
223
/*** Attribute descriptor and subclassing stuff ***/
224
BPy_CurNurb_methods, /* struct PyMethodDef *tp_methods; */
225
0, /* struct PyMemberDef *tp_members; */
226
0, /* struct PyGetSetDef *tp_getset; */
227
0, /* struct _typeobject *tp_base; */
228
0, /* PyObject *tp_dict; */
229
0, /* descrgetfunc tp_descr_get; */
230
0, /* descrsetfunc tp_descr_set; */
231
0, /* long tp_dictoffset; */
232
0, /* initproc tp_init; */
233
0, /* allocfunc tp_alloc; */
234
0, /* newfunc tp_new; */
235
/* Low-level free-memory routine */
236
0, /* freefunc tp_free; */
237
/* For PyObject_IS_GC */
238
0, /* inquiry tp_is_gc; */
239
0, /* PyObject *tp_bases; */
240
/* method resolution order */
241
0, /* PyObject *tp_mro; */
242
0, /* PyObject *tp_cache; */
243
0, /* PyObject *tp_subclasses; */
244
0, /* PyObject *tp_weaklist; */
251
void CurNurb_dealloc( BPy_CurNurb * self )
253
PyObject_DEL( self );
258
static PyObject *CurNurb_getAttr( BPy_CurNurb * self, char *name )
260
PyObject *attr = Py_None;
262
if( strcmp( name, "mat_index" ) == 0 )
263
attr = PyInt_FromLong( self->nurb->mat_nr );
265
else if( strcmp( name, "points" ) == 0 )
266
attr = PyInt_FromLong( self->nurb->pntsu );
268
else if( strcmp( name, "flagU" ) == 0 )
269
attr = CurNurb_getFlagU( self );
271
else if( strcmp( name, "flagV" ) == 0 )
272
attr = CurNurb_getFlagV( self );
274
else if( strcmp( name, "type" ) == 0 )
275
attr = CurNurb_getType( self );
277
else if( strcmp( name, "__members__" ) == 0 )
278
attr = Py_BuildValue( "[s,s,s,s,s]", "mat_index", "points", "flagU", "flagV", "type" );
281
return EXPP_ReturnPyObjError( PyExc_MemoryError,
282
"couldn't create PyObject" );
284
/* member attribute found, return it */
285
if( attr != Py_None )
288
/* not an attribute, search the methods table */
289
return Py_FindMethod( BPy_CurNurb_methods, ( PyObject * ) self, name );
297
static int CurNurb_setAttr( BPy_CurNurb * self, char *name, PyObject * value )
300
PyObject *error = NULL;
302
/* make a tuple to pass to our type methods */
303
valtuple = Py_BuildValue( "(O)", value );
306
return EXPP_ReturnIntError( PyExc_MemoryError,
307
"CurNurb.setAttr: cannot create pytuple" );
309
if( strcmp( name, "mat_index" ) == 0 )
310
error = CurNurb_setMatIndex( self, valtuple );
312
else if( strcmp( name, "flagU" ) == 0 )
313
error = CurNurb_setFlagU( self, valtuple );
315
else if( strcmp( name, "flagV" ) == 0 )
316
error = CurNurb_setFlagV( self, valtuple );
318
else if( strcmp( name, "type" ) == 0 )
319
error = CurNurb_setType( self, valtuple );
321
else { /* error - no match for name */
322
Py_DECREF( valtuple );
324
if( ( strcmp( name, "ZZZZ" ) == 0 ) || /* user tried to change a */
325
( strcmp( name, "ZZZZ" ) == 0 ) ) /* constant dict type ... */
326
return EXPP_ReturnIntError( PyExc_AttributeError,
327
"constant dictionary -- cannot be changed" );
329
return EXPP_ReturnIntError( PyExc_KeyError,
330
"attribute not found" );
334
Py_DECREF( valtuple ); /* since it is not being returned */
335
if( error != Py_None )
338
Py_DECREF( Py_None );
339
return 0; /* normal exit */
344
in this case, we consider two CurNurbs equal, if they point to the same
348
static int CurNurb_compare( BPy_CurNurb * a, BPy_CurNurb * b )
353
return ( pa == pb ) ? 0 : -1;
358
factory method to create a BPy_CurNurb from a Blender Nurb
361
PyObject *CurNurb_CreatePyObject( Nurb * blen_nurb )
365
pyNurb = ( BPy_CurNurb * ) PyObject_NEW( BPy_CurNurb, &CurNurb_Type );
368
return EXPP_ReturnPyObjError( PyExc_MemoryError,
369
"could not create BPy_CurNurb PyObject" );
371
pyNurb->nurb = blen_nurb;
372
return ( PyObject * ) pyNurb;
379
static PyObject *CurNurb_repr( BPy_CurNurb * self )
380
{ /* used by 'repr' */
382
return PyString_FromFormat( "[CurNurb \"%d\"]", self->nurb->type );
385
/* XXX Can't this be simply removed? */
386
static PyObject *M_CurNurb_New( PyObject * self, PyObject * args )
388
return ( PyObject * ) 0;
395
static PyObject *CurNurb_getType( BPy_CurNurb * self )
397
/* type is on 3 first bits only */
398
return PyInt_FromLong( self->nurb->type & 7 );
404
* Convert the curve using Blender's convertspline fonction
406
static PyObject *CurNurb_setType( BPy_CurNurb * self, PyObject * args )
408
Nurb *nurb = self->nurb;
411
/* parameter type checking */
412
if( !PyArg_ParseTuple( args, "i", &type ) )
413
return EXPP_ReturnPyObjError
414
( PyExc_TypeError, "expected integer argument" );
416
/* parameter value checking */
417
if (type != CU_POLY &&
420
return EXPP_ReturnPyObjError
421
( PyExc_ValueError, "expected integer argument" );
423
/* convert and raise error if impossible */
424
if (convertspline(type, nurb))
425
return EXPP_ReturnPyObjError
426
( PyExc_ValueError, "Conversion Impossible" );
428
return EXPP_incr_ret( Py_None );
434
* CurNurb_append( point )
435
* append a new point to a nurb curve.
436
* arg is BezTriple or list of xyzw floats
439
PyObject *CurNurb_append( BPy_CurNurb * self, PyObject * args )
441
Nurb *nurb = self->nurb;
443
return CurNurb_appendPointToNurb( nurb, args );
448
* CurNurb_appendPointToNurb
449
* this is a non-bpy utility func to add a point to a given nurb.
450
* notice the first arg is Nurb*.
453
PyObject *CurNurb_appendPointToNurb( Nurb * nurb, PyObject * args )
459
int npoints = nurb->pntsu;
462
do we have a list of four floats or a BezTriple?
464
if( !PyArg_ParseTuple( args, "O", &pyOb ))
465
return EXPP_ReturnPyObjError
466
( PyExc_RuntimeError,
467
"Internal error parsing arguments" );
471
/* if curve is empty, adjust type depending on input type */
472
if (nurb->bezt==NULL && nurb->bp==NULL) {
473
if (BezTriple_CheckPyObject( pyOb ))
474
nurb->type |= CU_BEZIER;
475
else if (PySequence_Check( pyOb ))
476
nurb->type |= CU_NURBS;
478
return( EXPP_ReturnPyObjError( PyExc_TypeError,
479
"Expected a BezTriple or a Sequence of 4 (or 5) floats" ) );
484
if ((nurb->type & 7)==CU_BEZIER) {
487
if( !BezTriple_CheckPyObject( pyOb ) )
488
return( EXPP_ReturnPyObjError( PyExc_TypeError,
489
"Expected a BezTriple\n" ) );
491
/* printf("\ndbg: got a BezTriple\n"); */
492
tmp = nurb->bezt; /* save old points */
494
( BezTriple * ) MEM_mallocN( sizeof( BezTriple ) *
499
return ( EXPP_ReturnPyObjError
500
( PyExc_MemoryError, "allocation failed" ) );
502
/* copy old points to new */
503
memmove( nurb->bezt, tmp, sizeof( BezTriple ) * npoints );
507
/* add new point to end of list */
508
memcpy( nurb->bezt + npoints,
509
BezTriple_FromPyObject( pyOb ), sizeof( BezTriple ) );
512
else if( PySequence_Check( pyOb ) ) {
513
size = PySequence_Size( pyOb );
514
/* printf("\ndbg: got a sequence of size %d\n", size ); */
515
if( size == 4 || size == 5 ) {
518
tmp = nurb->bp; /* save old pts */
521
( BPoint * ) MEM_mallocN( sizeof( BPoint ) *
525
return ( EXPP_ReturnPyObjError
527
"allocation failed" ) );
529
memmove( nurb->bp, tmp, sizeof( BPoint ) * npoints );
534
/* initialize new BPoint from old */
535
memcpy( nurb->bp + npoints, nurb->bp,
538
for( i = 0; i < 4; ++i ) {
540
( float ) PyFloat_AsDouble
541
( PySequence_GetItem( pyOb, i ) );
542
nurb->bp[npoints].vec[i] = tmpx;
547
nurb->bp[npoints].alfa = (float)PyFloat_AsDouble( PySequence_GetItem( pyOb, 4 ) );
550
nurb->bp[npoints].alfa = 0.0f;
553
makeknots( nurb, 1, nurb->flagu >> 1 );
555
} else if( size == 3 ) { /* 3 xyz coords */
556
printf( "\nNot Yet Implemented!\n" );
561
/* bail with error */
562
return EXPP_ReturnPyObjError( PyExc_TypeError,
563
"expected a sequence of 4 (or optionaly 5) floats\n" );
567
return ( EXPP_incr_ret( Py_None ) );
572
* CurNurb_setMatIndex
574
* set index into material list
577
static PyObject *CurNurb_setMatIndex( BPy_CurNurb * self, PyObject * args )
581
if( !PyArg_ParseTuple( args, "i", &( index ) ) )
582
return ( EXPP_ReturnPyObjError
583
( PyExc_AttributeError,
584
"expected integer argument" ) );
586
/* fixme: some range checking would be nice! */
587
self->nurb->mat_nr = index;
589
Py_INCREF( Py_None );
594
* CurNurb_getMatIndex
596
* returns index into material list
599
static PyObject *CurNurb_getMatIndex( BPy_CurNurb * self )
601
PyObject *index = PyInt_FromLong( ( long ) self->nurb->mat_nr );
606
return ( EXPP_ReturnPyObjError( PyExc_RuntimeError,
607
"could not get material index" ) );
613
* returns curve's flagu
616
static PyObject *CurNurb_getFlagU( BPy_CurNurb * self )
618
PyObject *flagu = PyInt_FromLong( ( long ) self->nurb->flagu );
623
return ( EXPP_ReturnPyObjError( PyExc_RuntimeError,
624
"could not get CurNurb.flagu index" ) );
630
* set curve's flagu and recalculate the knots
632
* Possible values: 0 - uniform, 1 - endpoints, 2 - bezier
635
static PyObject *CurNurb_setFlagU( BPy_CurNurb * self, PyObject * args )
639
if( !PyArg_ParseTuple( args, "i", &( flagu ) ) )
640
return ( EXPP_ReturnPyObjError
641
( PyExc_AttributeError,
642
"expected integer argument" ) );
644
if( self->nurb->flagu != flagu ) {
645
self->nurb->flagu = flagu;
646
makeknots( self->nurb, 1, self->nurb->flagu >> 1 );
649
Py_INCREF( Py_None );
656
* returns curve's flagu
659
static PyObject *CurNurb_getFlagV( BPy_CurNurb * self )
661
PyObject *flagv = PyInt_FromLong( ( long ) self->nurb->flagv );
666
return ( EXPP_ReturnPyObjError( PyExc_RuntimeError,
667
"could not get CurNurb.flagv" ) );
673
* set curve's flagu and recalculate the knots
675
* Possible values: 0 - uniform, 1 - endpoints, 2 - bezier
678
static PyObject *CurNurb_setFlagV( BPy_CurNurb * self, PyObject * args )
682
if( !PyArg_ParseTuple( args, "i", &( flagv ) ) )
683
return ( EXPP_ReturnPyObjError
684
( PyExc_AttributeError,
685
"expected integer argument" ) );
687
if( self->nurb->flagv != flagv ) {
688
self->nurb->flagv = flagv;
689
makeknots( self->nurb, 2, self->nurb->flagv >> 1 );
692
Py_INCREF( Py_None );
699
* create an iterator for our CurNurb.
700
* this iterator returns the points for this CurNurb.
703
static PyObject *CurNurb_getIter( BPy_CurNurb * self )
705
self->bp = self->nurb->bp;
706
self->bezt = self->nurb->bezt;
710
/* set exhausted flag if both bp and bezt are zero */
711
if( ( !self->bp ) && ( !self->bezt ) )
715
return ( PyObject * ) self;
720
static PyObject *CurNurb_iterNext( BPy_CurNurb * self )
722
PyObject *po; /* return value */
723
Nurb *pnurb = self->nurb;
724
int npoints = pnurb->pntsu;
726
/* are we at end already? */
728
return ( EXPP_ReturnPyObjError( PyExc_StopIteration,
729
"iterator at end" ) );
731
if( self->nextPoint < npoints ) {
733
po = CurNurb_pointAtIndex( self->nurb, self->nextPoint );
739
self->atEnd = 1; /* set flag true */
742
return ( EXPP_ReturnPyObjError( PyExc_StopIteration,
743
"iterator at end" ) );
750
* test whether spline nurb or bezier
753
static PyObject *CurNurb_isNurb( BPy_CurNurb * self )
755
/* NOTE: a Nurb has bp and bezt pointers
757
* It is possible both are NULL if no points exist.
758
* in that case, we return False
761
if( self->nurb->bp ) {
762
return EXPP_incr_ret_True();
764
return EXPP_incr_ret_False();
770
* test whether spline cyclic (closed) or not (open)
773
static PyObject *CurNurb_isCyclic( BPy_CurNurb * self )
775
/* supposing that the flagu is always set */
777
if( self->nurb->flagu & CU_CYCLIC ) {
778
return EXPP_incr_ret_True();
780
return EXPP_incr_ret_False();
786
* returns the number of points in a Nurb
787
* this is a tp_as_sequence method, not a regular instance method.
790
static int CurNurb_length( PyInstanceObject * inst )
795
if( CurNurb_CheckPyObject( ( PyObject * ) inst ) ) {
796
nurb = ( ( BPy_CurNurb * ) inst )->nurb;
801
return EXPP_ReturnIntError( PyExc_RuntimeError,
802
"arg is not a BPy_CurNurb" );
808
* returns the Nth point in a Nurb
809
* this is one of the tp_as_sequence methods, hence the int N argument.
810
* it is called via the [] operator, not as a usual instance method.
813
PyObject *CurNurb_getPoint( BPy_CurNurb * self, int index )
821
npoints = myNurb->pntsu;
823
/* DELETED: bail if index < 0 */
824
/* actually, this check is not needed since python treats */
825
/* negative indices as starting from the right end of a sequence */
827
THAT IS WRONG, when passing a negative index, python adjusts it to be positive
828
BUT it can still overflow in the negatives if the index is too small.
829
For example, list[-6] when list contains 5 items means index = -1 in here.
833
/* bail if no Nurbs in Curve */
835
return ( EXPP_ReturnPyObjError( PyExc_IndexError,
836
"no points in this CurNurb" ) );
838
/* check index limits */
839
if( index >= npoints || index < 0 )
840
return ( EXPP_ReturnPyObjError( PyExc_IndexError,
841
"index out of range" ) );
843
return CurNurb_pointAtIndex( myNurb, index );
848
* modifies the Nth point in a Nurb
849
* this is one of the tp_as_sequence methods, hence the int N argument.
850
* it is called via the [] = operator, not as a usual instance method.
852
static int CurNurb_setPoint( BPy_CurNurb * self, int index, PyObject * pyOb )
854
Nurb *nurb = self->nurb;
857
/* check index limits */
858
if( index < 0 || index >= nurb->pntsu )
859
return EXPP_ReturnIntError( PyExc_IndexError,
860
"array assignment index out of range\n" );
863
/* branch by curve type */
864
if ((nurb->type & 7)==CU_BEZIER) { /* BEZIER */
865
/* check parameter type */
866
if( !BezTriple_CheckPyObject( pyOb ) )
867
return EXPP_ReturnIntError( PyExc_TypeError,
868
"expected a BezTriple\n" );
870
/* copy bezier in array */
871
memcpy( nurb->bezt + index,
872
BezTriple_FromPyObject( pyOb ), sizeof( BezTriple ) );
874
return 0; /* finished correctly */
876
else { /* NURBS or POLY */
879
/* check parameter type */
880
if (!PySequence_Check( pyOb ))
881
return EXPP_ReturnIntError( PyExc_TypeError,
882
"expected a list of 4 (or optionaly 5 if the curve is 3D) floats\n" );
884
size = PySequence_Size( pyOb );
886
/* check sequence size */
887
if( size != 4 && size != 5 )
888
return EXPP_ReturnIntError( PyExc_TypeError,
889
"expected a list of 4 (or optionaly 5 if the curve is 3D) floats\n" );
891
/* copy x, y, z, w */
892
for( i = 0; i < 4; ++i ) {
894
( float ) PyFloat_AsDouble
895
( PySequence_GetItem( pyOb, i ) );
896
nurb->bp[index].vec[i] = tmpx;
900
if (size == 5) { /* set tilt, if present */
901
nurb->bp[index].alfa = (float)PyFloat_AsDouble( PySequence_GetItem( pyOb, 4 ) );
903
else { /* if not, set default */
904
nurb->bp[index].alfa = 0.0f;
907
return 0; /* finished correctly */
913
* this is an internal routine. not callable directly from python
916
PyObject *CurNurb_pointAtIndex( Nurb * nurb, int index )
920
if( nurb->bp ) { /* we have a nurb curve */
923
/* add Tilt only if curve is 3D */
924
if (nurb->flag & CU_3D)
925
pyo = PyList_New( 5 );
927
pyo = PyList_New( 4 );
929
for( i = 0; i < 4; i++ ) {
930
PyList_SetItem( pyo, i,
931
PyFloat_FromDouble( nurb->bp[index].
935
/* add Tilt only if curve is 3D */
936
if (nurb->flag & CU_3D)
937
PyList_SetItem( pyo, 4, PyFloat_FromDouble( nurb->bp[index].alfa ) );
939
} else if( nurb->bezt ) { /* we have a bezier */
940
/* if an error occurs, we just pass it on */
941
pyo = BezTriple_CreatePyObject( &( nurb->bezt[index] ) );
943
} else /* something is horribly wrong */
944
/* neither bp or bezt is set && pntsu != 0 */
945
return ( EXPP_ReturnPyObjError( PyExc_SystemError,
946
"inconsistant structure found" ) );
952
int CurNurb_CheckPyObject( PyObject * py_obj )
954
return ( py_obj->ob_type == &CurNurb_Type );
958
PyObject *CurNurb_Init( void )
962
CurNurb_Type.ob_type = &PyType_Type;
965
Py_InitModule3( "Blender.CurNurb", M_CurNurb_methods,
967
return ( submodule );
975
PyObject *CurNurb_dump( BPy_CurNurb * self )
978
BezTriple *bezt = NULL;
979
Nurb *nurb = self->nurb;
982
if( ! self->nurb ){ /* bail on error */
983
printf("\n no Nurb in this CurNurb");
987
printf(" type: %d, mat_nr: %d hide: %d flag: %d",
988
nurb->type, nurb->mat_nr, nurb->hide, nurb->flag);
989
printf("\n pntsu: %d, pntsv: %d, resolu: %d resolv: %d",
990
nurb->pntsu, nurb->pntsv, nurb->resolu, nurb->resolv );
991
printf("\n orderu: %d orderv: %d", nurb->orderu, nurb->orderv );
992
printf("\n flagu: %d flagv: %d",
993
nurb->flagu, nurb->flagv );
995
npoints = nurb->pntsu;
997
if( nurb->bp ) { /* we have a BPoint */
999
for( n = 0, bp = nurb->bp;
1004
printf( "\ncoords[%d]: ", n);
1007
for( i = 0; i < 4; i++){
1008
printf("%10.3f ", bp->vec[i] );
1013
printf("\n alpha: %5.2f s: %d %d ",
1014
bp->alfa, bp->s[0], bp->s[1] );
1016
printf(" f1 %d hide %d", bp->f1, bp->hide );
1020
else { /* we have a BezTriple */
1022
for( n = 0, bezt = nurb->bezt;
1027
printf("\npoint %d: ", n);
1028
for( i = 0; i < 3; i++ ) {
1029
printf("\nvec[%i] ",i );
1030
for( j = 0; j < 3; j++ ) {
1031
printf(" %5.2f ", bezt->vec[i][j] );
added
removed
source/blender/python/api2_2x/CurNurb.c
