1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
|
/*
* $Id$
*
* ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version. The Blender
* Foundation also sells licenses for use in proprietary software under
* the Blender License. See http://www.blender.org/BL/ for information
* about this.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL/BL DUAL LICENSE BLOCK *****
* Camera in the gameengine. Cameras are also used for views.
*/
#include "KX_Camera.h"
#include "KX_Scene.h"
#include "KX_PythonInit.h"
#include "KX_Python.h"
#include "KX_PyMath.h"
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
KX_Camera::KX_Camera(void* sgReplicationInfo,
SG_Callbacks callbacks,
const RAS_CameraData& camdata,
bool frustum_culling,
PyTypeObject *T)
:
KX_GameObject(sgReplicationInfo,callbacks,T),
m_camdata(camdata),
m_dirty(true),
m_normalized(false),
m_frustum_culling(frustum_culling && camdata.m_perspective),
m_set_projection_matrix(false),
m_set_frustum_center(false)
{
// setting a name would be nice...
m_name = "cam";
m_projection_matrix.setIdentity();
m_modelview_matrix.setIdentity();
CValue* val = new CIntValue(1);
SetProperty("camera",val);
val->Release();
}
KX_Camera::~KX_Camera()
{
}
MT_Transform KX_Camera::GetWorldToCamera() const
{
MT_Transform camtrans;
camtrans.invert(MT_Transform(NodeGetWorldPosition(), NodeGetWorldOrientation()));
return camtrans;
}
MT_Transform KX_Camera::GetCameraToWorld() const
{
return MT_Transform(NodeGetWorldPosition(), NodeGetWorldOrientation());
}
void KX_Camera::CorrectLookUp(MT_Scalar speed)
{
}
const MT_Point3 KX_Camera::GetCameraLocation() const
{
/* this is the camera locatio in cam coords... */
//return m_trans1.getOrigin();
//return MT_Point3(0,0,0); <-----
/* .... I want it in world coords */
//MT_Transform trans;
//trans.setBasis(NodeGetWorldOrientation());
return NodeGetWorldPosition();
}
/* I want the camera orientation as well. */
const MT_Quaternion KX_Camera::GetCameraOrientation() const
{
return NodeGetWorldOrientation().getRotation();
}
/**
* Sets the projection matrix that is used by the rasterizer.
*/
void KX_Camera::SetProjectionMatrix(const MT_Matrix4x4 & mat)
{
m_projection_matrix = mat;
m_dirty = true;
m_set_projection_matrix = true;
m_set_frustum_center = false;
}
/**
* Sets the modelview matrix that is used by the rasterizer.
*/
void KX_Camera::SetModelviewMatrix(const MT_Matrix4x4 & mat)
{
m_modelview_matrix = mat;
m_dirty = true;
m_set_frustum_center = false;
}
/**
* Gets the projection matrix that is used by the rasterizer.
*/
const MT_Matrix4x4& KX_Camera::GetProjectionMatrix() const
{
return m_projection_matrix;
}
/**
* Gets the modelview matrix that is used by the rasterizer.
*/
const MT_Matrix4x4& KX_Camera::GetModelviewMatrix() const
{
return m_modelview_matrix;
}
bool KX_Camera::hasValidProjectionMatrix() const
{
return m_set_projection_matrix;
}
void KX_Camera::InvalidateProjectionMatrix(bool valid)
{
m_set_projection_matrix = valid;
}
/*
* These getters retrieve the clip data and the focal length
*/
float KX_Camera::GetLens() const
{
return m_camdata.m_lens;
}
float KX_Camera::GetCameraNear() const
{
return m_camdata.m_clipstart;
}
float KX_Camera::GetCameraFar() const
{
return m_camdata.m_clipend;
}
RAS_CameraData* KX_Camera::GetCameraData()
{
return &m_camdata;
}
void KX_Camera::ExtractClipPlanes()
{
if (!m_dirty)
return;
MT_Matrix4x4 m = m_projection_matrix * m_modelview_matrix;
// Left clip plane
m_planes[0] = m[3] + m[0];
// Right clip plane
m_planes[1] = m[3] - m[0];
// Top clip plane
m_planes[2] = m[3] - m[1];
// Bottom clip plane
m_planes[3] = m[3] + m[1];
// Near clip plane
m_planes[4] = m[3] + m[2];
// Far clip plane
m_planes[5] = m[3] - m[2];
m_dirty = false;
m_normalized = false;
}
void KX_Camera::NormalizeClipPlanes()
{
if (m_normalized)
return;
for (unsigned int p = 0; p < 6; p++)
{
MT_Scalar factor = sqrt(m_planes[p][0]*m_planes[p][0] + m_planes[p][1]*m_planes[p][1] + m_planes[p][2]*m_planes[p][2]);
if (!MT_fuzzyZero(factor))
m_planes[p] /= factor;
}
m_normalized = true;
}
void KX_Camera::ExtractFrustumSphere()
{
if (m_set_frustum_center)
return;
// The most extreme points on the near and far plane. (normalized device coords)
MT_Vector4 hnear(1., 1., 0., 1.), hfar(1., 1., 1., 1.);
MT_Matrix4x4 clip_camcs_matrix = m_projection_matrix;
clip_camcs_matrix.invert();
// Transform to hom camera local space
hnear = clip_camcs_matrix*hnear;
hfar = clip_camcs_matrix*hfar;
// Tranform to 3d camera local space.
MT_Point3 nearpoint(hnear[0]/hnear[3], hnear[1]/hnear[3], hnear[2]/hnear[3]);
MT_Point3 farpoint(hfar[0]/hfar[3], hfar[1]/hfar[3], hfar[2]/hfar[3]);
// Compute center
m_frustum_center = MT_Point3(0., 0.,
(nearpoint.dot(nearpoint) - farpoint.dot(farpoint))/(2.0*(m_camdata.m_clipend - m_camdata.m_clipstart)));
m_frustum_radius = m_frustum_center.distance(farpoint);
// Transform to world space.
m_frustum_center = GetCameraToWorld()(m_frustum_center);
m_frustum_radius /= fabs(NodeGetWorldScaling()[NodeGetWorldScaling().closestAxis()]);
m_set_frustum_center = true;
}
bool KX_Camera::PointInsideFrustum(const MT_Point3& x)
{
ExtractClipPlanes();
for( unsigned int i = 0; i < 6 ; i++ )
{
if (m_planes[i][0]*x[0] + m_planes[i][1]*x[1] + m_planes[i][2]*x[2] + m_planes[i][3] < 0.)
return false;
}
return true;
}
int KX_Camera::BoxInsideFrustum(const MT_Point3 *box)
{
ExtractClipPlanes();
unsigned int insideCount = 0;
// 6 view frustum planes
for( unsigned int p = 0; p < 6 ; p++ )
{
unsigned int behindCount = 0;
// 8 box verticies.
for (unsigned int v = 0; v < 8 ; v++)
{
if (m_planes[p][0]*box[v][0] + m_planes[p][1]*box[v][1] + m_planes[p][2]*box[v][2] + m_planes[p][3] < 0.)
behindCount++;
}
// 8 points behind this plane
if (behindCount == 8)
return OUTSIDE;
// Every box vertex is on the front side of this plane
if (!behindCount)
insideCount++;
}
// All box verticies are on the front side of all frustum planes.
if (insideCount == 6)
return INSIDE;
return INTERSECT;
}
int KX_Camera::SphereInsideFrustum(const MT_Point3& center, const MT_Scalar &radius)
{
ExtractFrustumSphere();
if (center.distance2(m_frustum_center) > (radius + m_frustum_radius)*(radius + m_frustum_radius))
return OUTSIDE;
unsigned int p;
ExtractClipPlanes();
NormalizeClipPlanes();
MT_Scalar distance;
int intersect = INSIDE;
// distance: <-------- OUTSIDE -----|----- INTERSECT -----0----- INTERSECT -----|----- INSIDE -------->
// -radius radius
for (p = 0; p < 6; p++)
{
distance = m_planes[p][0]*center[0] + m_planes[p][1]*center[1] + m_planes[p][2]*center[2] + m_planes[p][3];
if (fabs(distance) <= radius)
intersect = INTERSECT;
else if (distance < -radius)
return OUTSIDE;
}
return intersect;
}
bool KX_Camera::GetFrustumCulling() const
{
return m_frustum_culling;
}
void KX_Camera::EnableViewport(bool viewport)
{
m_camdata.m_viewport = viewport;
}
void KX_Camera::SetViewport(int left, int bottom, int right, int top)
{
m_camdata.m_viewportleft = left;
m_camdata.m_viewportbottom = bottom;
m_camdata.m_viewportright = right;
m_camdata.m_viewporttop = top;
}
bool KX_Camera::GetViewport() const
{
return m_camdata.m_viewport;
}
int KX_Camera::GetViewportLeft() const
{
return m_camdata.m_viewportleft;
}
int KX_Camera::GetViewportBottom() const
{
return m_camdata.m_viewportbottom;
}
int KX_Camera::GetViewportRight() const
{
return m_camdata.m_viewportright;
}
int KX_Camera::GetViewportTop() const
{
return m_camdata.m_viewporttop;
}
//----------------------------------------------------------------------------
//Python
PyMethodDef KX_Camera::Methods[] = {
KX_PYMETHODTABLE(KX_Camera, sphereInsideFrustum),
KX_PYMETHODTABLE(KX_Camera, boxInsideFrustum),
KX_PYMETHODTABLE(KX_Camera, pointInsideFrustum),
KX_PYMETHODTABLE(KX_Camera, getCameraToWorld),
KX_PYMETHODTABLE(KX_Camera, getWorldToCamera),
KX_PYMETHODTABLE(KX_Camera, getProjectionMatrix),
KX_PYMETHODTABLE(KX_Camera, setProjectionMatrix),
KX_PYMETHODTABLE(KX_Camera, enableViewport),
KX_PYMETHODTABLE(KX_Camera, setViewport),
KX_PYMETHODTABLE(KX_Camera, setOnTop),
{NULL,NULL} //Sentinel
};
char KX_Camera::doc[] = "Module KX_Camera\n\n"
"Constants:\n"
"\tINSIDE\n"
"\tINTERSECT\n"
"\tOUTSIDE\n"
"Attributes:\n"
"\tlens -> float\n"
"\t\tThe camera's lens value\n"
"\tnear -> float\n"
"\t\tThe camera's near clip distance\n"
"\tfar -> float\n"
"\t\tThe camera's far clip distance\n"
"\tfrustum_culling -> bool\n"
"\t\tNon zero if this camera is frustum culling.\n"
"\tprojection_matrix -> [[float]]\n"
"\t\tThis camera's projection matrix.\n"
"\tmodelview_matrix -> [[float]] (read only)\n"
"\t\tThis camera's model view matrix.\n"
"\t\tRegenerated every frame from the camera's position and orientation.\n"
"\tcamera_to_world -> [[float]] (read only)\n"
"\t\tThis camera's camera to world transform.\n"
"\t\tRegenerated every frame from the camera's position and orientation.\n"
"\tworld_to_camera -> [[float]] (read only)\n"
"\t\tThis camera's world to camera transform.\n"
"\t\tRegenerated every frame from the camera's position and orientation.\n"
"\t\tThis is camera_to_world inverted.\n";
PyTypeObject KX_Camera::Type = {
PyObject_HEAD_INIT(&PyType_Type)
0,
"KX_Camera",
sizeof(KX_Camera),
0,
PyDestructor,
0,
__getattr,
__setattr,
0, //&MyPyCompare,
__repr,
0, //&cvalue_as_number,
0,
0,
0,
0, 0, 0, 0, 0, 0,
doc
};
PyParentObject KX_Camera::Parents[] = {
&KX_Camera::Type,
&KX_GameObject::Type,
&SCA_IObject::Type,
&CValue::Type,
NULL
};
PyObject* KX_Camera::_getattr(const STR_String& attr)
{
if (attr == "INSIDE")
return PyInt_FromLong(INSIDE); /* new ref */
if (attr == "OUTSIDE")
return PyInt_FromLong(OUTSIDE); /* new ref */
if (attr == "INTERSECT")
return PyInt_FromLong(INTERSECT); /* new ref */
if (attr == "lens")
return PyFloat_FromDouble(GetLens()); /* new ref */
if (attr == "near")
return PyFloat_FromDouble(GetCameraNear()); /* new ref */
if (attr == "far")
return PyFloat_FromDouble(GetCameraFar()); /* new ref */
if (attr == "frustum_culling")
return PyInt_FromLong(m_frustum_culling); /* new ref */
if (attr == "perspective")
return PyInt_FromLong(m_camdata.m_perspective); /* new ref */
if (attr == "projection_matrix")
return PyObjectFrom(GetProjectionMatrix()); /* new ref */
if (attr == "modelview_matrix")
return PyObjectFrom(GetModelviewMatrix()); /* new ref */
if (attr == "camera_to_world")
return PyObjectFrom(GetCameraToWorld()); /* new ref */
if (attr == "world_to_camera")
return PyObjectFrom(GetWorldToCamera()); /* new ref */
_getattr_up(KX_GameObject);
}
int KX_Camera::_setattr(const STR_String &attr, PyObject *pyvalue)
{
if (PyInt_Check(pyvalue))
{
if (attr == "frustum_culling")
{
m_frustum_culling = PyInt_AsLong(pyvalue);
return 0;
}
if (attr == "perspective")
{
m_camdata.m_perspective = PyInt_AsLong(pyvalue);
return 0;
}
}
if (PyFloat_Check(pyvalue))
{
if (attr == "lens")
{
m_camdata.m_lens = PyFloat_AsDouble(pyvalue);
m_set_projection_matrix = false;
return 0;
}
if (attr == "near")
{
m_camdata.m_clipstart = PyFloat_AsDouble(pyvalue);
m_set_projection_matrix = false;
return 0;
}
if (attr == "far")
{
m_camdata.m_clipend = PyFloat_AsDouble(pyvalue);
m_set_projection_matrix = false;
return 0;
}
}
if (PyObject_IsMT_Matrix(pyvalue, 4))
{
if (attr == "projection_matrix")
{
MT_Matrix4x4 mat;
if (PyMatTo(pyvalue, mat))
{
SetProjectionMatrix(mat);
return 0;
}
return 1;
}
}
return KX_GameObject::_setattr(attr, pyvalue);
}
KX_PYMETHODDEF_DOC(KX_Camera, sphereInsideFrustum,
"sphereInsideFrustum(center, radius) -> Integer\n"
"\treturns INSIDE, OUTSIDE or INTERSECT if the given sphere is\n"
"\tinside/outside/intersects this camera's viewing frustum.\n\n"
"\tcenter = the center of the sphere (in world coordinates.)\n"
"\tradius = the radius of the sphere\n\n"
"\tExample:\n"
"\timport GameLogic\n\n"
"\tco = GameLogic.getCurrentController()\n"
"\tcam = co.GetOwner()\n\n"
"\t# A sphere of radius 4.0 located at [x, y, z] = [1.0, 1.0, 1.0]\n"
"\tif (cam.sphereInsideFrustum([1.0, 1.0, 1.0], 4) != cam.OUTSIDE):\n"
"\t\t# Sphere is inside frustum !\n"
"\t\t# Do something useful !\n"
"\telse:\n"
"\t\t# Sphere is outside frustum\n"
)
{
PyObject *pycenter;
float radius;
if (PyArg_ParseTuple(args, "Of", &pycenter, &radius))
{
MT_Point3 center;
if (PyVecTo(pycenter, center))
{
return PyInt_FromLong(SphereInsideFrustum(center, radius)); /* new ref */
}
}
PyErr_SetString(PyExc_TypeError, "sphereInsideFrustum: Expected arguments: (center, radius)");
Py_Return;
}
KX_PYMETHODDEF_DOC(KX_Camera, boxInsideFrustum,
"boxInsideFrustum(box) -> Integer\n"
"\treturns INSIDE, OUTSIDE or INTERSECT if the given box is\n"
"\tinside/outside/intersects this camera's viewing frustum.\n\n"
"\tbox = a list of the eight (8) corners of the box (in world coordinates.)\n\n"
"\tExample:\n"
"\timport GameLogic\n\n"
"\tco = GameLogic.getCurrentController()\n"
"\tcam = co.GetOwner()\n\n"
"\tbox = []\n"
"\tbox.append([-1.0, -1.0, -1.0])\n"
"\tbox.append([-1.0, -1.0, 1.0])\n"
"\tbox.append([-1.0, 1.0, -1.0])\n"
"\tbox.append([-1.0, 1.0, 1.0])\n"
"\tbox.append([ 1.0, -1.0, -1.0])\n"
"\tbox.append([ 1.0, -1.0, 1.0])\n"
"\tbox.append([ 1.0, 1.0, -1.0])\n"
"\tbox.append([ 1.0, 1.0, 1.0])\n\n"
"\tif (cam.boxInsideFrustum(box) != cam.OUTSIDE):\n"
"\t\t# Box is inside/intersects frustum !\n"
"\t\t# Do something useful !\n"
"\telse:\n"
"\t\t# Box is outside the frustum !\n"
)
{
PyObject *pybox;
if (PyArg_ParseTuple(args, "O", &pybox))
{
unsigned int num_points = PySequence_Size(pybox);
if (num_points != 8)
{
PyErr_Format(PyExc_TypeError, "boxInsideFrustum: Expected eight (8) points, got %d", num_points);
return NULL;
}
MT_Point3 box[8];
for (unsigned int p = 0; p < 8 ; p++)
{
PyObject *item = PySequence_GetItem(pybox, p); /* new ref */
bool error = !PyVecTo(item, box[p]);
Py_DECREF(item);
if (error)
return NULL;
}
return PyInt_FromLong(BoxInsideFrustum(box)); /* new ref */
}
PyErr_SetString(PyExc_TypeError, "boxInsideFrustum: Expected argument: list of points.");
return NULL;
}
KX_PYMETHODDEF_DOC(KX_Camera, pointInsideFrustum,
"pointInsideFrustum(point) -> Bool\n"
"\treturns 1 if the given point is inside this camera's viewing frustum.\n\n"
"\tpoint = The point to test (in world coordinates.)\n\n"
"\tExample:\n"
"\timport GameLogic\n\n"
"\tco = GameLogic.getCurrentController()\n"
"\tcam = co.GetOwner()\n\n"
"\t# Test point [0.0, 0.0, 0.0]"
"\tif (cam.pointInsideFrustum([0.0, 0.0, 0.0])):\n"
"\t\t# Point is inside frustum !\n"
"\t\t# Do something useful !\n"
"\telse:\n"
"\t\t# Box is outside the frustum !\n"
)
{
MT_Point3 point;
if (PyVecArgTo(args, point))
{
return PyInt_FromLong(PointInsideFrustum(point)); /* new ref */
}
PyErr_SetString(PyExc_TypeError, "pointInsideFrustum: Expected point argument.");
return NULL;
}
KX_PYMETHODDEF_DOC(KX_Camera, getCameraToWorld,
"getCameraToWorld() -> Matrix4x4\n"
"\treturns the camera to world transformation matrix, as a list of four lists of four values.\n\n"
"\tie: [[1.0, 0.0, 0.0, 0.0], [0.0, 1.0, 0.0, 0.0], [0.0, 0.0, 1.0, 0.0], [0.0, 0.0, 0.0, 1.0]])\n"
)
{
return PyObjectFrom(GetCameraToWorld()); /* new ref */
}
KX_PYMETHODDEF_DOC(KX_Camera, getWorldToCamera,
"getWorldToCamera() -> Matrix4x4\n"
"\treturns the world to camera transformation matrix, as a list of four lists of four values.\n\n"
"\tie: [[1.0, 0.0, 0.0, 0.0], [0.0, 1.0, 0.0, 0.0], [0.0, 0.0, 1.0, 0.0], [0.0, 0.0, 0.0, 1.0]])\n"
)
{
return PyObjectFrom(GetWorldToCamera()); /* new ref */
}
KX_PYMETHODDEF_DOC(KX_Camera, getProjectionMatrix,
"getProjectionMatrix() -> Matrix4x4\n"
"\treturns this camera's projection matrix, as a list of four lists of four values.\n\n"
"\tie: [[1.0, 0.0, 0.0, 0.0], [0.0, 1.0, 0.0, 0.0], [0.0, 0.0, 1.0, 0.0], [0.0, 0.0, 0.0, 1.0]])\n"
)
{
return PyObjectFrom(GetProjectionMatrix()); /* new ref */
}
KX_PYMETHODDEF_DOC(KX_Camera, setProjectionMatrix,
"setProjectionMatrix(MT_Matrix4x4 m) -> None\n"
"\tSets this camera's projection matrix\n"
"\n"
"\tExample:\n"
"\timport GameLogic\n"
"\t# Set a perspective projection matrix\n"
"\tdef Perspective(left, right, bottom, top, near, far):\n"
"\t\tm = MT_Matrix4x4()\n"
"\t\tm[0][0] = m[0][2] = right - left\n"
"\t\tm[1][1] = m[1][2] = top - bottom\n"
"\t\tm[2][2] = m[2][3] = -far - near\n"
"\t\tm[3][2] = -1\n"
"\t\tm[3][3] = 0\n"
"\t\treturn m\n"
"\n"
"\t# Set an orthographic projection matrix\n"
"\tdef Orthographic(left, right, bottom, top, near, far):\n"
"\t\tm = MT_Matrix4x4()\n"
"\t\tm[0][0] = right - left\n"
"\t\tm[0][3] = -right - left\n"
"\t\tm[1][1] = top - bottom\n"
"\t\tm[1][3] = -top - bottom\n"
"\t\tm[2][2] = far - near\n"
"\t\tm[2][3] = -far - near\n"
"\t\tm[3][3] = 1\n"
"\t\treturn m\n"
"\n"
"\t# Set an isometric projection matrix\n"
"\tdef Isometric(left, right, bottom, top, near, far):\n"
"\t\tm = MT_Matrix4x4()\n"
"\t\tm[0][0] = m[0][2] = m[1][1] = 0.8660254037844386\n"
"\t\tm[1][0] = 0.25\n"
"\t\tm[1][2] = -0.25\n"
"\t\tm[3][3] = 1\n"
"\t\treturn m\n"
"\n"
"\t"
"\tco = GameLogic.getCurrentController()\n"
"\tcam = co.getOwner()\n"
"\tcam.setProjectionMatrix(Perspective(-1.0, 1.0, -1.0, 1.0, 0.1, 1))\n")
{
PyObject *pymat;
if (PyArg_ParseTuple(args, "O", &pymat))
{
MT_Matrix4x4 mat;
if (PyMatTo(pymat, mat))
{
SetProjectionMatrix(mat);
Py_Return;
}
}
PyErr_SetString(PyExc_TypeError, "setProjectionMatrix: Expected 4x4 list as matrix argument.");
return NULL;
}
KX_PYMETHODDEF_DOC(KX_Camera, enableViewport,
"enableViewport(viewport)\n"
"Sets this camera's viewport status\n"
)
{
int viewport;
if (PyArg_ParseTuple(args,"i",&viewport))
{
if(viewport)
EnableViewport(true);
else
EnableViewport(false);
}
Py_Return;
}
KX_PYMETHODDEF_DOC(KX_Camera, setViewport,
"setViewport(left, bottom, right, top)\n"
"Sets this camera's viewport\n")
{
int left, bottom, right, top;
if (PyArg_ParseTuple(args,"iiii",&left, &bottom, &right, &top))
{
SetViewport(left, bottom, right, top);
}
Py_Return;
}
KX_PYMETHODDEF_DOC(KX_Camera, setOnTop,
"setOnTop()\n"
"Sets this camera's viewport on top\n")
{
class KX_Scene* scene;
scene = PHY_GetActiveScene();
MT_assert(scene);
scene->SetCameraOnTop(this);
Py_Return;
}
|