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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 | 216 |
1 files changed, 216 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..f7141a72a51 --- /dev/null +++ b/source/blender/freestyle/intern/scene_graph/NodeCamera.h @@ -0,0 +1,216 @@ +/* + * ***** BEGIN GPL 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. + * + * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * The Original Code is Copyright (C) 2010 Blender Foundation. + * All rights reserved. + * + * The Original Code is: all of this file. + * + * Contributor(s): none yet. + * + * ***** END GPL LICENSE BLOCK ***** + */ + +#ifndef __FREESTYLE_NODE_CAMERA_H__ +#define __FREESTYLE_NODE_CAMERA_H__ + +/** \file blender/freestyle/intern/scene_graph/NodeCamera.h + * \ingroup freestyle + * \brief Class to represent a light node + * \author Stephane Grabli + * \date 25/01/2002 + */ + +#include "Node.h" + +#include "../geometry/Geom.h" + +#include "../system/FreestyleConfig.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 ) + * | ______ 0 0 0 | + * | aspect | + * | | + * | 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 ) + * | __________ 0 A 0 | + * | right-left | + * | | + * | 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 // __FREESTYLE_NODE_CAMERA_H__ |