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1 | // Created on: 2013-05-29 |
2 | // Created by: Anton POLETAEV |
3 | // Copyright (c) 1999-2014 OPEN CASCADE SAS |
4 | // |
5 | // This file is part of Open CASCADE Technology software library. |
6 | // |
d5f74e42 |
7 | // This library is free software; you can redistribute it and/or modify it under |
8 | // the terms of the GNU Lesser General Public License version 2.1 as published |
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9 | // by the Free Software Foundation, with special exception defined in the file |
10 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
11 | // distribution for complete text of the license and disclaimer of any warranty. |
12 | // |
13 | // Alternatively, this file may be used under the terms of Open CASCADE |
14 | // commercial license or contractual agreement. |
15 | |
16 | #ifndef _Graphic3d_Camera_HeaderFile |
17 | #define _Graphic3d_Camera_HeaderFile |
18 | |
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19 | #include <Graphic3d_Mat4d.hxx> |
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20 | #include <Graphic3d_Mat4.hxx> |
21 | #include <Graphic3d_Vec3.hxx> |
22 | |
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23 | #include <NCollection_Handle.hxx> |
24 | |
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25 | #include <gp_Dir.hxx> |
26 | #include <gp_Pnt.hxx> |
27 | |
28 | #include <Standard_Macro.hxx> |
29 | #include <Standard_TypeDef.hxx> |
30 | |
31 | DEFINE_STANDARD_HANDLE (Graphic3d_Camera, Standard_Transient) |
32 | |
33 | //! Camera class provides object-oriented approach to setting up projection |
34 | //! and orientation properties of 3D view. |
35 | class Graphic3d_Camera : public Standard_Transient |
36 | { |
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37 | private: |
38 | |
39 | //! Template container for cached matrices or Real/ShortReal types. |
40 | template<typename Elem_t> |
41 | struct TransformMatrices |
42 | { |
43 | void InitOrientation() |
44 | { |
45 | Orientation = new NCollection_Mat4<Elem_t>(); |
46 | } |
47 | |
48 | void InitProjection() |
49 | { |
50 | MProjection = new NCollection_Mat4<Elem_t>(); |
51 | LProjection = new NCollection_Mat4<Elem_t>(); |
52 | RProjection = new NCollection_Mat4<Elem_t>(); |
53 | } |
54 | |
55 | void ResetOrientation() |
56 | { |
57 | Orientation.Nullify(); |
58 | } |
59 | |
60 | void ResetProjection() |
61 | { |
62 | MProjection.Nullify(); |
63 | LProjection.Nullify(); |
64 | RProjection.Nullify(); |
65 | } |
66 | |
67 | Standard_Boolean IsOrientationValid() |
68 | { |
69 | return !Orientation.IsNull(); |
70 | } |
71 | |
72 | Standard_Boolean IsProjectionValid() |
73 | { |
74 | return !MProjection.IsNull() && |
75 | !LProjection.IsNull() && |
76 | !RProjection.IsNull(); |
77 | } |
78 | |
79 | NCollection_Handle< NCollection_Mat4<Elem_t> > Orientation; |
80 | NCollection_Handle< NCollection_Mat4<Elem_t> > MProjection; |
81 | NCollection_Handle< NCollection_Mat4<Elem_t> > LProjection; |
82 | NCollection_Handle< NCollection_Mat4<Elem_t> > RProjection; |
83 | }; |
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84 | |
85 | public: |
86 | |
87 | //! Enumerates supported monographic projections. |
88 | //! - Projection_Orthographic : orthographic projection. |
89 | //! - Projection_Perspective : perspective projection. |
90 | //! - Projection_Stere : stereographic projection. |
91 | //! - Projection_MonoLeftEye : mono projection for stereo left eye. |
92 | //! - Projection_MonoRightEye : mono projection for stereo right eye. |
93 | enum Projection |
94 | { |
95 | Projection_Orthographic, |
96 | Projection_Perspective, |
97 | Projection_Stereo, |
98 | Projection_MonoLeftEye, |
99 | Projection_MonoRightEye |
100 | }; |
101 | |
102 | //! Enumerates approaches to define stereographic focus. |
103 | //! - FocusType_Absolute : focus is specified as absolute value. |
104 | //! - FocusType_Relative : focus is specified relative to |
105 | //! (as coefficient of) camera focal length. |
106 | enum FocusType |
107 | { |
108 | FocusType_Absolute, |
109 | FocusType_Relative |
110 | }; |
111 | |
112 | //! Enumerates approaches to define Intraocular distance. |
113 | //! - IODType_Absolute : Intraocular distance is defined as absolute value. |
114 | //! - IODType_Relative : Intraocular distance is defined relative to |
115 | //! (as coefficient of) camera focal length. |
116 | enum IODType |
117 | { |
118 | IODType_Absolute, |
119 | IODType_Relative |
120 | }; |
121 | |
122 | public: |
123 | |
124 | //! Default constructor. |
125 | //! Initializes camera with the following properties: |
126 | //! Eye (0, 0, -2); Center (0, 0, 0); Up (0, 1, 0); |
127 | //! Type (Orthographic); FOVy (45); Scale (1000); IsStereo(false); |
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128 | //! ZNear (0.001); ZFar (3000.0); Aspect(1); |
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129 | //! ZFocus(1.0); ZFocusType(Relative); IOD(0.05); IODType(Relative) |
130 | Standard_EXPORT Graphic3d_Camera(); |
131 | |
132 | //! Copy constructor. |
133 | //! @param theOther [in] the camera to copy from. |
134 | Standard_EXPORT Graphic3d_Camera (const Handle(Graphic3d_Camera)& theOther); |
135 | |
136 | //! Initialize mapping related parameters from other camera handle. |
137 | Standard_EXPORT void CopyMappingData (const Handle(Graphic3d_Camera)& theOtherCamera); |
138 | |
139 | //! Initialize orientation related parameters from other camera handle. |
140 | Standard_EXPORT void CopyOrientationData (const Handle(Graphic3d_Camera)& theOtherCamera); |
141 | |
142 | //! Copy properties of another camera. |
143 | //! @param theOther [in] the camera to copy from. |
144 | Standard_EXPORT void Copy (const Handle(Graphic3d_Camera)& theOther); |
145 | |
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146 | //! @name Public camera properties |
147 | public: |
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148 | |
149 | //! Sets camera Eye position. |
150 | //! @param theEye [in] the location of camera's Eye. |
151 | Standard_EXPORT void SetEye (const gp_Pnt& theEye); |
152 | |
153 | //! Get camera Eye position. |
154 | //! @return camera eye location. |
155 | const gp_Pnt& Eye() const |
156 | { |
157 | return myEye; |
158 | } |
159 | |
160 | //! Sets Center of the camera. |
161 | //! @param theCenter [in] the point where the camera looks at. |
162 | Standard_EXPORT void SetCenter (const gp_Pnt& theCenter); |
163 | |
164 | //! Get Center of the camera. |
165 | //! @return the point where the camera looks at. |
166 | const gp_Pnt& Center() const |
167 | { |
168 | return myCenter; |
169 | } |
170 | |
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171 | //! Sets camera Up direction vector, orthogonal to camera direction. |
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172 | //! @param theUp [in] the Up direction vector. |
173 | Standard_EXPORT void SetUp (const gp_Dir& theUp); |
174 | |
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175 | //! Orthogonalize up direction vector. |
176 | Standard_EXPORT void OrthogonalizeUp(); |
177 | |
178 | //! Return a copy of orthogonalized up direction vector. |
179 | Standard_EXPORT gp_Dir OrthogonalizedUp() const; |
180 | |
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181 | //! Get camera Up direction vector. |
182 | //! @return Camera's Up direction vector. |
183 | const gp_Dir& Up() const |
184 | { |
185 | return myUp; |
186 | } |
187 | |
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188 | //! Set camera axial scale.<br> |
189 | //! @param theAxialScale [in] the axial scale vector. |
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190 | Standard_EXPORT void SetAxialScale (const gp_XYZ& theAxialScale); |
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191 | |
192 | //! Get camera axial scale. |
193 | //! @return Camera's axial scale. |
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194 | const gp_XYZ& AxialScale() const |
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195 | { |
196 | return myAxialScale; |
197 | } |
198 | |
199 | //! Set distance of Eye from camera Center. |
200 | //! @param theDistance [in] the distance. |
201 | Standard_EXPORT void SetDistance (const Standard_Real theDistance); |
202 | |
203 | //! Get distance of Eye from camera Center. |
204 | //! @return the distance. |
205 | Standard_EXPORT Standard_Real Distance() const; |
206 | |
207 | //! Sets camera look direction. |
208 | //! @param theDir [in] the direction. |
209 | Standard_EXPORT void SetDirection (const gp_Dir& theDir); |
210 | |
211 | //! Get camera look direction. |
212 | //! @return camera look direction. |
213 | Standard_EXPORT gp_Dir Direction() const; |
214 | |
215 | //! Sets camera scale. For orthographic projection the scale factor |
216 | //! corresponds to parallel scale of view mapping (i.e. size |
217 | //! of viewport). For perspective camera scale is converted to |
218 | //! distance. |
219 | //! @param theScale [in] the scale factor. |
220 | Standard_EXPORT void SetScale (const Standard_Real theScale); |
221 | |
222 | //! Get camera scale. |
223 | //! @return camera scale factor. |
224 | Standard_EXPORT Standard_Real Scale() const; |
225 | |
226 | //! Change camera projection type. |
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227 | //! When switching to perspective projection from orthographic one, |
228 | //! the ZNear and ZFar are reset to default values (0.001, 3000.0) |
229 | //! if less than 0.0. |
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230 | //! @param theProjectionType [in] the camera projection type. |
231 | Standard_EXPORT void SetProjectionType (const Projection theProjection); |
232 | |
233 | //! @return camera projection type. |
234 | Projection ProjectionType() const |
235 | { |
236 | return myProjType; |
237 | } |
238 | |
239 | //! Check that the camera projection is orthographic. |
240 | //! @return boolean flag that indicates whether the camera's projection is |
241 | //! orthographic or not. |
242 | Standard_Boolean IsOrthographic() const |
243 | { |
244 | return (myProjType == Projection_Orthographic); |
245 | } |
246 | |
247 | //! Check whether the camera projection is stereo. |
248 | //! Please note that stereo rendering is now implemented with support of |
249 | //! Quad buffering. |
250 | //! @return boolean flag indicating whether the stereographic L/R projection |
251 | //! is chosen. |
252 | Standard_Boolean IsStereo() const |
253 | { |
254 | return (myProjType == Projection_Stereo); |
255 | } |
256 | |
257 | //! Set Field Of View (FOV) in y axis for perspective projection. |
258 | //! @param theFOVy [in] the FOV in degrees. |
259 | Standard_EXPORT void SetFOVy (const Standard_Real theFOVy); |
260 | |
261 | //! Get Field Of View (FOV) in y axis. |
262 | //! @return the FOV value in degrees. |
263 | Standard_Real FOVy() const |
264 | { |
265 | return myFOVy; |
266 | } |
267 | |
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268 | //! Change the Near and Far Z-clipping plane positions. |
269 | //! For orthographic projection, theZNear, theZFar can be negative or positive. |
270 | //! For perspective projection, only positive values are allowed. |
271 | //! Program error exception is raised if non-positive values are |
272 | //! specified for perspective projection or theZNear >= theZFar. |
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273 | //! @param theZNear [in] the distance of the plane from the Eye. |
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274 | //! @param theZFar [in] the distance of the plane from the Eye. |
275 | Standard_EXPORT void SetZRange (const Standard_Real theZNear, const Standard_Real theZFar); |
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276 | |
277 | //! Get the Near Z-clipping plane position. |
278 | //! @return the distance of the plane from the Eye. |
279 | Standard_Real ZNear() const |
280 | { |
281 | return myZNear; |
282 | } |
283 | |
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284 | //! Get the Far Z-clipping plane position. |
285 | //! @return the distance of the plane from the Eye. |
286 | Standard_Real ZFar() const |
287 | { |
288 | return myZFar; |
289 | } |
290 | |
291 | //! Change display ratio. |
292 | //! @param theAspect [in] the display ratio. |
293 | Standard_EXPORT void SetAspect (const Standard_Real theAspect); |
294 | |
295 | //! Get camera display ratio. |
296 | //! @return display ratio. |
297 | Standard_Real Aspect() const |
298 | { |
299 | return myAspect; |
300 | } |
301 | |
302 | //! Sets stereographic focus distance. |
303 | //! @param theType [in] the focus definition type. Focus can be defined |
304 | //! as absolute value or relatively to (as coefficient of) coefficient of |
305 | //! camera focal length. |
306 | //! @param theZFocus [in] the focus absolute value or coefficient depending |
307 | //! on the passed definition type. |
308 | Standard_EXPORT void SetZFocus (const FocusType theType, const Standard_Real theZFocus); |
309 | |
310 | //! Get stereographic focus value. |
311 | //! @return absolute or relative stereographic focus value |
312 | //! depending on its definition type. |
313 | Standard_Real ZFocus() const |
314 | { |
315 | return myZFocus; |
316 | } |
317 | |
318 | //! Get stereographic focus definition type. |
319 | //! @return definition type used for stereographic focus. |
320 | FocusType ZFocusType() const |
321 | { |
322 | return myZFocusType; |
323 | } |
324 | |
325 | //! Sets Intraocular distance. |
326 | //! @param theType [in] the IOD definition type. IOD can be defined as |
327 | //! absolute value or relatively to (as coefficient of) camera focal length. |
328 | //! @param theIOD [in] the Intraocular distance. |
329 | Standard_EXPORT void SetIOD (const IODType theType, const Standard_Real theIOD); |
330 | |
331 | //! Get Intraocular distance value. |
332 | //! @return absolute or relative IOD value depending on its definition type. |
333 | Standard_Real IOD() const |
334 | { |
335 | return myIOD; |
336 | } |
337 | |
338 | //! Get Intraocular distance definition type. |
339 | //! @return definition type used for Intraocular distance. |
340 | IODType GetIODType() const |
341 | { |
342 | return myIODType; |
343 | } |
344 | |
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345 | //! @name Basic camera operations |
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346 | public: |
347 | |
348 | //! Transform orientation components of the camera: |
349 | //! Eye, Up and Center points. |
350 | //! @param theTrsf [in] the transformation to apply. |
351 | Standard_EXPORT void Transform (const gp_Trsf& theTrsf); |
352 | |
353 | //! Calculate view plane size at center (target) point |
354 | //! and distance between ZFar and ZNear planes. |
355 | //! @return values in form of gp_Pnt (Width, Height, Depth). |
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356 | Standard_EXPORT gp_XYZ ViewDimensions() const; |
357 | |
358 | //! Calculate WCS frustum planes for the camera projection volume. |
359 | //! Frustum is a convex volume determined by six planes directing |
360 | //! inwards. |
361 | //! The frustum planes are usually used as inputs for camera algorithms. |
362 | //! Thus, if any changes to projection matrix calculation are necessary, |
363 | //! the frustum planes calculation should be also touched. |
364 | //! @param theLeft [out] the frustum plane for left side of view. |
365 | //! @param theRight [out] the frustum plane for right side of view. |
366 | //! @param theBottom [out] the frustum plane for bottom side of view. |
367 | //! @param theTop [out] the frustum plane for top side of view. |
368 | //! @param theNear [out] the frustum plane for near side of view. |
369 | //! @param theFar [out] the frustum plane for far side of view. |
370 | Standard_EXPORT void Frustum (gp_Pln& theLeft, |
371 | gp_Pln& theRight, |
372 | gp_Pln& theBottom, |
373 | gp_Pln& theTop, |
374 | gp_Pln& theNear, |
375 | gp_Pln& theFar) const; |
376 | |
377 | //! @name Projection methods |
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378 | public: |
379 | |
380 | //! Project point from world coordinate space to |
381 | //! normalized device coordinates (mapping). |
382 | //! @param thePnt [in] the 3D point in WCS. |
383 | //! @return mapped point in NDC. |
384 | Standard_EXPORT gp_Pnt Project (const gp_Pnt& thePnt) const; |
385 | |
386 | //! Unproject point from normalized device coordinates |
387 | //! to world coordinate space. |
388 | //! @param thePnt [in] the NDC point. |
389 | //! @return 3D point in WCS. |
390 | Standard_EXPORT gp_Pnt UnProject (const gp_Pnt& thePnt) const; |
391 | |
392 | //! Convert point from view coordinate space to |
393 | //! projection coordinate space. |
394 | //! @param thePnt [in] the point in VCS. |
395 | //! @return point in NDC. |
396 | Standard_EXPORT gp_Pnt ConvertView2Proj (const gp_Pnt& thePnt) const; |
397 | |
398 | //! Convert point from projection coordinate space |
399 | //! to view coordinate space. |
400 | //! @param thePnt [in] the point in NDC. |
401 | //! @return point in VCS. |
402 | Standard_EXPORT gp_Pnt ConvertProj2View (const gp_Pnt& thePnt) const; |
403 | |
404 | //! Convert point from world coordinate space to |
405 | //! view coordinate space. |
406 | //! @param thePnt [in] the 3D point in WCS. |
407 | //! @return point in VCS. |
408 | Standard_EXPORT gp_Pnt ConvertWorld2View (const gp_Pnt& thePnt) const; |
409 | |
410 | //! Convert point from view coordinate space to |
411 | //! world coordinates. |
412 | //! @param thePnt [in] the 3D point in VCS. |
413 | //! @return point in WCS. |
414 | Standard_EXPORT gp_Pnt ConvertView2World (const gp_Pnt& thePnt) const; |
415 | |
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416 | //! @name Camera modification state |
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417 | public: |
418 | |
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419 | //! Returns modification state of camera projection matrix |
420 | Standard_Size ProjectionState() const |
421 | { |
422 | return myProjectionState; |
423 | } |
424 | |
425 | //! Returns modification state of camera model-view matrix |
426 | Standard_Size ModelViewState() const |
427 | { |
428 | return myOrientationState; |
429 | } |
430 | |
431 | //! @name Lazily-computed orientation and projection matrices derived from camera parameters |
432 | public: |
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433 | |
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434 | //! Get orientation matrix. |
435 | //! @return camera orientation matrix. |
436 | Standard_EXPORT const Graphic3d_Mat4d& OrientationMatrix() const; |
437 | |
438 | //! Get orientation matrix of Standard_ShortReal precision. |
439 | //! @return camera orientation matrix. |
440 | Standard_EXPORT const Graphic3d_Mat4& OrientationMatrixF() const; |
441 | |
442 | //! Get monographic or middle point projection matrix used for monographic |
443 | //! rendering and for point projection / unprojection. |
444 | //! @return monographic projection matrix. |
445 | Standard_EXPORT const Graphic3d_Mat4d& ProjectionMatrix() const; |
446 | |
447 | //! Get monographic or middle point projection matrix of Standard_ShortReal precision used for monographic |
448 | //! rendering and for point projection / unprojection. |
449 | //! @return monographic projection matrix. |
450 | Standard_EXPORT const Graphic3d_Mat4& ProjectionMatrixF() const; |
451 | |
452 | //! @return stereographic matrix computed for left eye. Please note |
453 | //! that this method is used for rendering for <i>Projection_Stereo</i>. |
454 | Standard_EXPORT const Graphic3d_Mat4d& ProjectionStereoLeft() const; |
455 | |
456 | //! @return stereographic matrix of Standard_ShortReal precision computed for left eye. |
457 | //! Please note that this method is used for rendering for <i>Projection_Stereo</i>. |
458 | Standard_EXPORT const Graphic3d_Mat4& ProjectionStereoLeftF() const; |
459 | |
460 | //! @return stereographic matrix computed for right eye. Please note |
461 | //! that this method is used for rendering for <i>Projection_Stereo</i>. |
462 | Standard_EXPORT const Graphic3d_Mat4d& ProjectionStereoRight() const; |
463 | |
464 | //! @return stereographic matrix of Standard_ShortReal precision computed for right eye. |
465 | //! Please note that this method is used for rendering for <i>Projection_Stereo</i>. |
466 | Standard_EXPORT const Graphic3d_Mat4& ProjectionStereoRightF() const; |
467 | |
468 | //! @name Managing projection and orientation cache |
469 | private: |
470 | |
471 | //! Compute projection matrices. |
472 | //! @param theMatrices [in] the matrices data container. |
473 | template <typename Elem_t> |
474 | Standard_EXPORT |
475 | TransformMatrices<Elem_t>& UpdateProjection (TransformMatrices<Elem_t>& theMatrices) const; |
476 | |
477 | //! Compute orientation matrix. |
478 | //! @param theMatrices [in] the matrices data container. |
479 | template <typename Elem_t> |
480 | Standard_EXPORT |
481 | TransformMatrices<Elem_t>& UpdateOrientation (TransformMatrices<Elem_t>& theMatrices) const; |
482 | |
483 | //! Invalidate state of projection matrix. |
484 | //! The matrix will be updated on request. |
485 | void InvalidateProjection(); |
486 | |
487 | //! Invalidate orientation matrix. |
488 | //! The matrix will be updated on request. |
489 | void InvalidateOrientation(); |
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490 | |
491 | private: |
492 | |
493 | //! Compose orthographic projection matrix for |
494 | //! the passed camera volume mapping. |
495 | //! @param theLeft [in] the left mapping (clipping) coordinate. |
496 | //! @param theRight [in] the right mapping (clipping) coordinate. |
497 | //! @param theBottom [in] the bottom mapping (clipping) coordinate. |
498 | //! @param theTop [in] the top mapping (clipping) coordinate. |
499 | //! @param theNear [in] the near mapping (clipping) coordinate. |
500 | //! @param theFar [in] the far mapping (clipping) coordinate. |
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501 | //! @param theOutMx [out] the projection matrix. |
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502 | template <typename Elem_t> |
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503 | static void |
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504 | OrthoProj (const Elem_t theLeft, |
505 | const Elem_t theRight, |
506 | const Elem_t theBottom, |
507 | const Elem_t theTop, |
508 | const Elem_t theNear, |
509 | const Elem_t theFar, |
510 | NCollection_Mat4<Elem_t>& theOutMx); |
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511 | |
512 | //! Compose perspective projection matrix for |
513 | //! the passed camera volume mapping. |
514 | //! @param theLeft [in] the left mapping (clipping) coordinate. |
515 | //! @param theRight [in] the right mapping (clipping) coordinate. |
516 | //! @param theBottom [in] the bottom mapping (clipping) coordinate. |
517 | //! @param theTop [in] the top mapping (clipping) coordinate. |
518 | //! @param theNear [in] the near mapping (clipping) coordinate. |
519 | //! @param theFar [in] the far mapping (clipping) coordinate. |
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520 | //! @param theOutMx [out] the projection matrix. |
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521 | template <typename Elem_t> |
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522 | static void |
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523 | PerspectiveProj (const Elem_t theLeft, |
524 | const Elem_t theRight, |
525 | const Elem_t theBottom, |
526 | const Elem_t theTop, |
527 | const Elem_t theNear, |
528 | const Elem_t theFar, |
529 | NCollection_Mat4<Elem_t>& theOutMx); |
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530 | |
531 | //! Compose projection matrix for L/R stereo eyes. |
532 | //! @param theLeft [in] the left mapping (clipping) coordinate. |
533 | //! @param theRight [in] the right mapping (clipping) coordinate. |
534 | //! @param theBottom [in] the bottom mapping (clipping) coordinate. |
535 | //! @param theTop [in] the top mapping (clipping) coordinate. |
536 | //! @param theNear [in] the near mapping (clipping) coordinate. |
537 | //! @param theFar [in] the far mapping (clipping) coordinate. |
538 | //! @param theIOD [in] the Intraocular distance. |
539 | //! @param theZFocus [in] the z coordinate of off-axis |
540 | //! projection plane with zero parallax. |
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541 | //! @param theIsLeft [in] boolean flag to choose between L/R eyes. |
542 | //! @param theOutMx [out] the projection matrix. |
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543 | template <typename Elem_t> |
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544 | static void |
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545 | StereoEyeProj (const Elem_t theLeft, |
546 | const Elem_t theRight, |
547 | const Elem_t theBottom, |
548 | const Elem_t theTop, |
549 | const Elem_t theNear, |
550 | const Elem_t theFar, |
551 | const Elem_t theIOD, |
552 | const Elem_t theZFocus, |
553 | const Standard_Boolean theIsLeft, |
554 | NCollection_Mat4<Elem_t>& theOutMx); |
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555 | |
556 | //! Construct "look at" orientation transformation. |
557 | //! Reference point differs for perspective and ortho modes |
558 | //! (made for compatibility, to be improved..). |
559 | //! @param theEye [in] the eye coordinates in 3D space. |
560 | //! @param theLookAt [in] the point the camera looks at. |
561 | //! @param theUpDir [in] the up direction vector. |
562 | //! @param theAxialScale [in] the axial scale vector. |
563 | //! @param theOutMx [in/out] the orientation matrix. |
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564 | template <typename Elem_t> |
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565 | static void |
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566 | LookOrientation (const NCollection_Vec3<Elem_t>& theEye, |
567 | const NCollection_Vec3<Elem_t>& theLookAt, |
568 | const NCollection_Vec3<Elem_t>& theUpDir, |
569 | const NCollection_Vec3<Elem_t>& theAxialScale, |
570 | NCollection_Mat4<Elem_t>& theOutMx); |
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571 | |
572 | private: |
573 | |
574 | gp_Dir myUp; //!< Camera up direction vector. |
575 | gp_Pnt myEye; //!< Camera eye position. |
576 | gp_Pnt myCenter; //!< Camera center. |
577 | |
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578 | gp_XYZ myAxialScale; //!< World axial scale. |
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579 | |
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580 | Projection myProjType; //!< Projection type used for rendering. |
581 | Standard_Real myFOVy; //!< Field Of View in y axis. |
582 | Standard_Real myZNear; //!< Distance to near clipping plane. |
583 | Standard_Real myZFar; //!< Distance to far clipping plane. |
584 | Standard_Real myAspect; //!< Width to height display ratio. |
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585 | |
586 | Standard_Real myScale; //!< Specifies parallel scale for orthographic projection. |
587 | Standard_Real myZFocus; //!< Stereographic focus value. |
588 | FocusType myZFocusType; //!< Stereographic focus definition type. |
589 | |
590 | Standard_Real myIOD; //!< Intraocular distance value. |
591 | IODType myIODType; //!< Intraocular distance definition type. |
592 | |
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593 | mutable TransformMatrices<Standard_Real> myMatricesD; |
594 | mutable TransformMatrices<Standard_ShortReal> myMatricesF; |
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595 | |
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596 | mutable Standard_Size myProjectionState; |
597 | mutable Standard_Size myOrientationState; |
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598 | |
599 | public: |
600 | |
601 | DEFINE_STANDARD_RTTI(Graphic3d_Camera); |
602 | |
603 | }; |
604 | |
605 | #endif |