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Diffstat (limited to 'source/blender/freestyle/intern/scene_graph/NodeCamera.h')
-rw-r--r-- | source/blender/freestyle/intern/scene_graph/NodeCamera.h | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/source/blender/freestyle/intern/scene_graph/NodeCamera.h b/source/blender/freestyle/intern/scene_graph/NodeCamera.h new file mode 100644 index 00000000000..cdd6fa83048 --- /dev/null +++ b/source/blender/freestyle/intern/scene_graph/NodeCamera.h @@ -0,0 +1,192 @@ +// +// Filename : NodeCamera.h +// Author(s) : Stephane Grabli +// Purpose : Class to represent a light node +// Date of creation : 25/01/2002 +// +/////////////////////////////////////////////////////////////////////////////// + + +// +// Copyright (C) : Please refer to the COPYRIGHT file distributed +// with this source distribution. +// +// 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. +// +// 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. +// +/////////////////////////////////////////////////////////////////////////////// + + +#ifndef NODE_CAMERA_H_ +#define NODE_CAMERA_H_ + +# include "../geometry/Geom.h" +# include "../system/FreestyleConfig.h" +# include "Node.h" + +using namespace Geometry; + +class NodeOrthographicCamera; +class NodePerspectiveCamera; +class LIB_SCENE_GRAPH_EXPORT NodeCamera : public Node +{ +public: + typedef enum {PERSPECTIVE,ORTHOGRAPHIC,GENERIC} CameraType; + + /*! Default matrices: Identity for both projection and modelview. */ + NodeCamera(CameraType camera_type = GENERIC); + NodeCamera(const NodeCamera& iBrother); + + virtual ~NodeCamera() {} + + /*! Accept the corresponding visitor */ + virtual void accept(SceneVisitor& v); + + /*! Matrix is copied */ + void setModelViewMatrix(double modelview_matrix[16]); + /*! Matrix is copied */ + void setProjectionMatrix(double projection_matrix[16]); + + double * modelViewMatrix() {return modelview_matrix_;} + double * projectionMatrix() {return projection_matrix_;} + +protected: + // row major right handed matrix + double modelview_matrix_[16]; + // row major right handed matrix + double projection_matrix_[16]; + + CameraType camera_type_; +}; + +class LIB_SCENE_GRAPH_EXPORT NodeOrthographicCamera : public NodeCamera{ +public: + NodeOrthographicCamera(); + /*! Builds a parallel projection matrix a la glOrtho. + A 0 0 tx + 0 B 0 ty + 0 0 C tz + 0 0 0 1 + + where + + A = + 2 / (right - left) + B = + 2 / (top - bottom) + C = + -2 / (far - near) + tx = + -(right + left) / (right - left) + ty = + -(top + bottom) / (top - bottom) + tz = + -(zFar + zNear) / (zFar - zNear) + */ + NodeOrthographicCamera(double left + , double right + , double bottom + , double top + , double zNear + , double zFar + ); + + double left() const {return left_;} + double right() const {return right_;} + double bottom() const {return bottom_;} + double top() const {return top_;} + double zNear() const {return zNear_;} + double zFar() const {return zFar_;} + + NodeOrthographicCamera(const NodeOrthographicCamera& iBrother); + +private: + double left_; + double right_; + double bottom_; + double top_; + double zNear_; + double zFar_; +}; + +class LIB_SCENE_GRAPH_EXPORT NodePerspectiveCamera : public NodeCamera { +public: + NodePerspectiveCamera(); + /*! Builds a perspective projection matrix a la gluPerspective. + Given f defined as follows: + fovy + f = cotangent(____) + 2 + The generated matrix is + + + ( f ) + | ______ | + | aspect 0 0 0 | + | | + | 0 f 0 0 | + | | + | zNear+zFar 2*zNear*zFar | + | __________ ____________ | + | 0 0 zNear-zFar zNear-zFar | + | | + ( 0 0 -1 0 ) + \param fovy + Field of View specified in radians. + */ + NodePerspectiveCamera(double fovy + , double aspect + , double zNear + , double zFar); + + /*! Builds a perspective projection matrix a la glFrustum. + ( 2*zNear ) + | __________ | + | right-left 0 A 0 | + | | + | 2*zNear | + | 0 __________ B 0 | + | top-bottom | + | | + | 0 0 C D | + | | + | 0 0 -1 0 | + ( ) + + right+left + A = __________ + right-left + + top+bottom + B = __________ + top-bottom + + zFar+zNear + C = - __________ + zFar-zNear + + 2*zFar*zNear + D = - ____________ + zFar-zNear + */ + NodePerspectiveCamera(double left, + double right, + double bottom, + double top, + double zNear, + double zFar); +}; + + +#endif // NODE_CAMERA_H_ |