soc-2008-mxcurioni: renamed libQGLWidget's Camera class to AppGLWidget_Camera to use Blender's Camera struct, integrated the camera parameters from Blender. Perspective projection (precisely field of view) is now correct. Orthographic projection still having issues.

2008-07-02 12:16:36 +00:00
parent dfa10eba19
commit ffb07fcfb3
10 changed files with 110 additions and 97 deletions
--- a/source/blender/freestyle/intern/app_blender/AppGLWidget.cpp
+++ b/source/blender/freestyle/intern/app_blender/AppGLWidget.cpp
@@ -58,7 +58,7 @@ bool AppGLWidget::_backBufferFlag = true;
 AppGLWidget::AppGLWidget(const char *iName)
 {
  //soc
-  _camera = new Camera;	
+  _camera = new AppGLWidget_Camera;	

  _Fovy        = 30.f;
  //_SceneDepth = 2.f;
--- a/source/blender/freestyle/intern/app_blender/AppGLWidget.h
+++ b/source/blender/freestyle/intern/app_blender/AppGLWidget.h
@@ -90,7 +90,7 @@ public:
 		void setStateFileName(const string& name);
 	

-		Camera * _camera;
+		AppGLWidget_Camera * _camera;

 protected:
 	unsigned int _width, _height;
--- a/source/blender/freestyle/intern/app_blender/AppGLWidget_camera.cpp
+++ b/source/blender/freestyle/intern/app_blender/AppGLWidget_camera.cpp
@@ -36,7 +36,7 @@ using namespace std;

 See IODistance(), physicalDistanceToScreen(), physicalScreenWidth() and focusDistance()
 documentations for default stereo parameter values. */
-Camera::Camera()
+AppGLWidget_Camera::AppGLWidget_Camera()
  : fieldOfView_(M_PI/4.0f)
 {
  // #CONNECTION# Camera copy constructor
@@ -85,7 +85,7 @@ Camera::Camera()

 The frame() is deleted, but the different keyFrameInterpolator() are \e not deleted (in case they
 are shared). */
-Camera::~Camera()
+AppGLWidget_Camera::~AppGLWidget_Camera()
 {
  delete frame_;
  //delete interpolationKfi_;
@@ -93,7 +93,7 @@ Camera::~Camera()


 /*! Copy constructor. Performs a deep copy using operator=(). */
-Camera::Camera(const Camera& camera)
+AppGLWidget_Camera::AppGLWidget_Camera(const AppGLWidget_Camera& camera)
 {
  // #CONNECTION# Camera constructor
  //interpolationKfi_ = new KeyFrameInterpolator;
@@ -122,7 +122,7 @@ Camera::Camera(const Camera& camera)
 camera()->setScreenWidthAndHeight(width(), height());
 \endcode
 The same applies to sceneCenter() and sceneRadius(), if needed. */
-Camera& Camera::operator=(const Camera& camera)
+AppGLWidget_Camera& AppGLWidget_Camera::operator=(const AppGLWidget_Camera& camera)
 {
  setScreenWidthAndHeight(camera.screenWidth(), camera.screenHeight());
  setFieldOfView(camera.fieldOfView());
@@ -164,7 +164,7 @@ Non-positive dimension are silently replaced by a 1 pixel value to ensure frustr

 If your Camera is used without a QGLViewer (offscreen rendering, shadow maps), use setAspectRatio()
 instead to define the projection matrix. */
-void Camera::setScreenWidthAndHeight(int width, int height)
+void AppGLWidget_Camera::setScreenWidthAndHeight(int width, int height)
 {
  // Prevent negative and zero dimensions that would cause divisions by zero.
 	screenWidth_  = width > 0 ? width : 1;
@@ -208,7 +208,7 @@ void Camera::setScreenWidthAndHeight(int width, int height)

 \attention The value is always positive although the clipping plane is positioned at a negative z
 value in the Camera coordinate system. This follows the \c gluPerspective standard. */
-float Camera::zNear() const
+float AppGLWidget_Camera::zNear() const
 {
  float z = distanceToSceneCenter() - zClippingCoefficient()*sceneRadius();

@@ -217,8 +217,8 @@ float Camera::zNear() const
  if (z < zMin)
    switch (type())
      {
-      case Camera::PERSPECTIVE  : z = zMin; break;
-      case Camera::ORTHOGRAPHIC : z = 0.0;  break;
+      case AppGLWidget_Camera::PERSPECTIVE  : z = zMin; break;
+      case AppGLWidget_Camera::ORTHOGRAPHIC : z = 0.0;  break;
      }
  return z;
 }
@@ -232,7 +232,7 @@ zFar = distanceToSceneCenter() + zClippingCoefficient()*sceneRadius();
 \endcode

 See the zNear() documentation for details. */
-float Camera::zFar() const
+float AppGLWidget_Camera::zFar() const
 {
  return distanceToSceneCenter() + zClippingCoefficient()*sceneRadius();
 }
@@ -241,12 +241,12 @@ float Camera::zFar() const

 Prefix the type with Camera, as in: \code camera()->setType(Camera::ORTHOGRAPHIC); // or even
 qglviewer::Camera::ORTHOGRAPHIC if you do not use namespace \endcode */
-void Camera::setType(Type type)
+void AppGLWidget_Camera::setType(Type type)
 {
  // make ORTHOGRAPHIC frustum fit PERSPECTIVE (at least in plane normal to viewDirection(), passing
  // through RAP) Done only when CHANGING type since orthoCoef_ may have been changed with a
  // setRevolveAroundPoint() in the meantime.
-  if ( (type == Camera::ORTHOGRAPHIC) && (type_ == Camera::PERSPECTIVE) )
+  if ( (type == AppGLWidget_Camera::ORTHOGRAPHIC) && (type_ == AppGLWidget_Camera::PERSPECTIVE) )
    orthoCoef_ = tan(fieldOfView()/2.0);
  type_ = type;
 }
@@ -264,7 +264,7 @@ use an instance of your new class to move the Camera.

 A \c NULL \p mcf pointer will silently be ignored. The calling method is responsible for
 deleting the previous frame() pointer if needed in order to prevent memory leaks. */
-void Camera::setFrame(ManipulatedCameraFrame* const mcf)
+void AppGLWidget_Camera::setFrame(ManipulatedCameraFrame* const mcf)
 {
  if (!mcf)
    return;
@@ -275,7 +275,7 @@ void Camera::setFrame(ManipulatedCameraFrame* const mcf)

 /*! Returns the distance from the Camera center to sceneCenter(), projected along the Camera Z axis.
  Used by zNear() and zFar() to optimize the Z range. */
-float Camera::distanceToSceneCenter() const
+float AppGLWidget_Camera::distanceToSceneCenter() const
 {
  return fabs((frame()->coordinatesOf(sceneCenter())).z);
 }
@@ -296,7 +296,7 @@ float Camera::distanceToSceneCenter() const

 Overload this method to change this behavior if desired, as is done in the 
 <a href="../examples/standardCamera.html">standardCamera example</a>. */
-void Camera::getOrthoWidthHeight(GLdouble& halfWidth, GLdouble& halfHeight) const
+void AppGLWidget_Camera::getOrthoWidthHeight(GLdouble& halfWidth, GLdouble& halfHeight) const
 {
  const float dist = orthoCoef_ * fabs(cameraCoordinatesOf(revolveAroundPoint()).z);
  //#CONNECTION# fitScreenRegion
@@ -322,14 +322,14 @@ void Camera::getOrthoWidthHeight(GLdouble& halfWidth, GLdouble& halfHeight) cons
 \note You must call this method if your Camera is not associated with a QGLViewer and is used for
 offscreen computations (using (un)projectedCoordinatesOf() for instance). loadProjectionMatrix()
 does it otherwise. */
-void Camera::computeProjectionMatrix() const
+void AppGLWidget_Camera::computeProjectionMatrix() const
 {
  const float ZNear = zNear();
  const float ZFar  = zFar();

  switch (type())
    {
-    case Camera::PERSPECTIVE:
+    case AppGLWidget_Camera::PERSPECTIVE:
      {
 	// #CONNECTION# all non null coefficients were set to 0.0 in constructor.
 	const float f = 1.0/tan(fieldOfView()/2.0);
@@ -342,7 +342,7 @@ void Camera::computeProjectionMatrix() const
 	// same as gluPerspective( 180.0*fieldOfView()/M_PI, aspectRatio(), zNear(), zFar() );
 	break;
      }
-    case Camera::ORTHOGRAPHIC:
+    case AppGLWidget_Camera::ORTHOGRAPHIC:
      {
 	GLdouble w, h;
 	getOrthoWidthHeight(w,h);
@@ -368,7 +368,7 @@ void Camera::computeProjectionMatrix() const
 \note You must call this method if your Camera is not associated with a QGLViewer and is used for
 offscreen computations (using (un)projectedCoordinatesOf() for instance). loadModelViewMatrix()
 does it otherwise. */
-void Camera::computeModelViewMatrix() const
+void AppGLWidget_Camera::computeModelViewMatrix() const
 {
  const Quaternion q = frame()->orientation();

@@ -427,7 +427,7 @@ void Camera::computeModelViewMatrix() const

 \attention If you use several OpenGL contexts and bypass the Qt main refresh loop, you should call
 QGLWidget::makeCurrent() before this method in order to activate the right OpenGL context. */
-void Camera::loadProjectionMatrix(bool reset) const
+void AppGLWidget_Camera::loadProjectionMatrix(bool reset) const
 {
  // WARNING: makeCurrent must be called by every calling method
  glMatrixMode(GL_PROJECTION);
@@ -464,7 +464,7 @@ void Camera::loadProjectionMatrix(bool reset) const

 \attention If you use several OpenGL contexts and bypass the Qt main refresh loop, you should call
 QGLWidget::makeCurrent() before this method in order to activate the right OpenGL context. */
-void Camera::loadModelViewMatrix(bool reset) const
+void AppGLWidget_Camera::loadModelViewMatrix(bool reset) const
 {
  // WARNING: makeCurrent must be called by every calling method
  glMatrixMode(GL_MODELVIEW);
@@ -500,7 +500,7 @@ void Camera::loadModelViewMatrix(bool reset) const
 Note that getProjectionMatrix() always returns the mono-vision matrix.

 \attention glMatrixMode is set to \c GL_PROJECTION. */
-void Camera::loadProjectionMatrixStereo(bool leftBuffer) const
+void AppGLWidget_Camera::loadProjectionMatrixStereo(bool leftBuffer) const
 {
  float left, right, bottom, top;
  float screenHalfWidth, halfWidth, side, shift, delta;
@@ -510,7 +510,7 @@ void Camera::loadProjectionMatrixStereo(bool leftBuffer) const

  switch (type())
    {
-    case Camera::PERSPECTIVE:
+    case AppGLWidget_Camera::PERSPECTIVE:
      // compute half width of screen,
      // corresponding to zero parallax plane to deduce decay of cameras
      screenHalfWidth = focusDistance() * tan(horizontalFieldOfView() / 2.0);
@@ -531,8 +531,8 @@ void Camera::loadProjectionMatrixStereo(bool leftBuffer) const
      glFrustum(left, right, bottom, top, zNear(), zFar() );
      break;

-    case Camera::ORTHOGRAPHIC:
-      cout << "Camera::setProjectionMatrixStereo: Stereo not available with Ortho mode";
+    case AppGLWidget_Camera::ORTHOGRAPHIC:
+      cout << "AppGLWidget_Camera::setProjectionMatrixStereo: Stereo not available with Ortho mode";
      break;
    }
 }
@@ -555,7 +555,7 @@ void Camera::loadProjectionMatrixStereo(bool leftBuffer) const
 href="../examples/contribs.html#anaglyph">anaglyph</a> examples for an illustration.

 \attention glMatrixMode is set to \c GL_MODELVIEW. */
-void Camera::loadModelViewMatrixStereo(bool leftBuffer) const
+void AppGLWidget_Camera::loadModelViewMatrixStereo(bool leftBuffer) const
 {
  // WARNING: makeCurrent must be called by every calling method
  glMatrixMode(GL_MODELVIEW);
@@ -585,7 +585,7 @@ void Camera::loadModelViewMatrixStereo(bool leftBuffer) const
 man page for details).

 See also getModelViewMatrix() and setFromProjectionMatrix(). */
-void Camera::getProjectionMatrix(GLdouble m[16]) const
+void AppGLWidget_Camera::getProjectionMatrix(GLdouble m[16]) const
 {
  // May not be needed, but easier and more robust like this.
  computeProjectionMatrix();
@@ -607,7 +607,7 @@ void Camera::getProjectionMatrix(GLdouble m[16]) const
 man page for details).

 See also getProjectionMatrix() and setFromModelViewMatrix(). */
-void Camera::getModelViewMatrix(GLdouble m[16]) const
+void AppGLWidget_Camera::getModelViewMatrix(GLdouble m[16]) const
 {
  // May not be needed, but easier like this.
  // Prevents from retrieving matrix in stereo mode -> overwrites shifted value.
@@ -619,7 +619,7 @@ void Camera::getModelViewMatrix(GLdouble m[16]) const
 /*! Fills \p m with the product of the ModelView and Projection matrices.

  Calls getModelViewMatrix() and getProjectionMatrix() and then fills \p m with the product of these two matrices. */
-void Camera::getModelViewProjectionMatrix(GLdouble m[16]) const
+void AppGLWidget_Camera::getModelViewProjectionMatrix(GLdouble m[16]) const
 {
  GLdouble mv[16];
  GLdouble proj[16];
@@ -639,18 +639,18 @@ void Camera::getModelViewProjectionMatrix(GLdouble m[16]) const
 }

 #ifndef DOXYGEN
-void Camera::getProjectionMatrix(GLfloat m[16]) const
+void AppGLWidget_Camera::getProjectionMatrix(GLfloat m[16]) const
 {
-  cout << "Warning : Camera::getProjectionMatrix requires a GLdouble matrix array";
+  cout << "Warning : AppGLWidget_Camera::getProjectionMatrix requires a GLdouble matrix array";
  static GLdouble mat[16];
  getProjectionMatrix(mat);
  for (int i=0; i<16; ++i)
    m[i] = float(mat[i]);
 }

-void Camera::getModelViewMatrix(GLfloat m[16]) const
+void AppGLWidget_Camera::getModelViewMatrix(GLfloat m[16]) const
 {
-  cout << "Warning : Camera::getModelViewMatrix requires a GLdouble matrix array";
+  cout << "Warning : AppGLWidget_Camera::getModelViewMatrix requires a GLdouble matrix array";
  static GLdouble mat[16];
  getModelViewMatrix(mat);
  for (int i=0; i<16; ++i)
@@ -662,7 +662,7 @@ void Camera::getModelViewMatrix(GLfloat m[16]) const

 \attention This methods also sets focusDistance() to sceneRadius() / tan(fieldOfView()/2) and
 flySpeed() to 1% of sceneRadius(). */
-void Camera::setSceneRadius(float radius)
+void AppGLWidget_Camera::setSceneRadius(float radius)
 {
  if (radius <= 0.0)
    {
@@ -679,7 +679,7 @@ void Camera::setSceneRadius(float radius)

 /*! Similar to setSceneRadius() and setSceneCenter(), but the scene limits are defined by a (world
  axis aligned) bounding box. */
-void Camera::setSceneBoundingBox(const Vec& min, const Vec& max)
+void AppGLWidget_Camera::setSceneBoundingBox(const Vec& min, const Vec& max)
 {
  setSceneCenter((min+max)/2.0);
  setSceneRadius(0.5*(max-min).norm());
@@ -689,7 +689,7 @@ void Camera::setSceneBoundingBox(const Vec& min, const Vec& max)
 /*! Sets the sceneCenter().

 \attention This method also sets the revolveAroundPoint() to sceneCenter(). */
-void Camera::setSceneCenter(const Vec& center)
+void AppGLWidget_Camera::setSceneCenter(const Vec& center)
 {
  sceneCenter_ = center;
  setRevolveAroundPoint(sceneCenter());
@@ -700,7 +700,7 @@ void Camera::setSceneCenter(const Vec& center)
  Returns \c true if a pointUnderPixel() was found and sceneCenter() was actually changed.

  See also setRevolveAroundPointFromPixel(). See the pointUnderPixel() documentation. */
-bool Camera::setSceneCenterFromPixel(const Point& pixel)
+bool AppGLWidget_Camera::setSceneCenterFromPixel(const Point& pixel)
 {
  bool found;
  Vec point = pointUnderPixel(pixel, found);
@@ -710,7 +710,7 @@ bool Camera::setSceneCenterFromPixel(const Point& pixel)
 }

 /*! Changes the revolveAroundPoint() to \p rap (defined in the world coordinate system). */
-void Camera::setRevolveAroundPoint(const Vec& rap)
+void AppGLWidget_Camera::setRevolveAroundPoint(const Vec& rap)
 {
  const float prevDist = fabs(cameraCoordinatesOf(revolveAroundPoint()).z);

@@ -733,7 +733,7 @@ revolveAroundPoint() is left unchanged.
 pointUnderPixel().

 See also setSceneCenterFromPixel(). */
-bool Camera::setRevolveAroundPointFromPixel(const Point& pixel)
+bool AppGLWidget_Camera::setRevolveAroundPointFromPixel(const Point& pixel)
 {
  bool found;
  Vec point = pointUnderPixel(pixel, found);
@@ -756,13 +756,13 @@ bool Camera::setRevolveAroundPointFromPixel(const Point& pixel)
 glVertex3fv(sceneCenter() + 20 * pixelGLRatio(sceneCenter()) * camera()->upVector());
 glEnd();
 \endcode */
-float Camera::pixelGLRatio(const Vec& position) const
+float AppGLWidget_Camera::pixelGLRatio(const Vec& position) const
 {
  switch (type())
    {
-    case Camera::PERSPECTIVE :
+    case AppGLWidget_Camera::PERSPECTIVE :
      return 2.0 * fabs((frame()->coordinatesOf(position)).z) * tan(fieldOfView()/2.0) / screenHeight();
-    case Camera::ORTHOGRAPHIC :
+    case AppGLWidget_Camera::ORTHOGRAPHIC :
      {
 	GLdouble w, h;
 	getOrthoWidthHeight(w,h);
@@ -798,7 +798,7 @@ float Camera::pixelGLRatio(const Vec& position) const
 \attention The fieldOfView() is clamped to M_PI/2.0. This happens when the Camera is at a distance
 lower than sqrt(2.0) * sceneRadius() from the sceneCenter(). It optimizes the shadow map
 resolution, although it may miss some parts of the scene. */
-void Camera::setFOVToFitScene()
+void AppGLWidget_Camera::setFOVToFitScene()
 {
  if (distanceToSceneCenter() > sqrt(2.0)*sceneRadius())
    setFieldOfView(2.0 * asin(sceneRadius() / distanceToSceneCenter()));
@@ -908,7 +908,7 @@ void Camera::setFOVToFitScene()

 \note The precision of the z-Buffer highly depends on how the zNear() and zFar() values are fitted
 to your scene. Loose boundaries will result in imprecision along the viewing direction. */
-Vec Camera::pointUnderPixel(const Point& pixel, bool& found) const
+Vec AppGLWidget_Camera::pointUnderPixel(const Point& pixel, bool& found) const
 {
  float depth;
  // Qt uses upper corner for its origin while GL uses the lower corner.
@@ -924,7 +924,7 @@ Vec Camera::pointUnderPixel(const Point& pixel, bool& found) const
 Simply calls fitSphere() on a sphere defined by sceneCenter() and sceneRadius().

 You will typically use this method in QGLViewer::init() after you defined a new sceneRadius(). */
-void Camera::showEntireScene()
+void AppGLWidget_Camera::showEntireScene()
 {
  fitSphere(sceneCenter(), sceneRadius());
 }
@@ -934,7 +934,7 @@ void Camera::showEntireScene()

 Simply projects the current position on a line passing through sceneCenter(). See also
 showEntireScene().*/
-void Camera::centerScene()
+void AppGLWidget_Camera::centerScene()
 {
  frame()->projectOnLine(sceneCenter(), viewDirection());
 }
@@ -945,7 +945,7 @@ void Camera::centerScene()
 The Camera position() is not modified. Simply setViewDirection().

 See also setUpVector(), setOrientation(), showEntireScene(), fitSphere() and fitBoundingBox(). */
-void Camera::lookAt(const Vec& target)
+void AppGLWidget_Camera::lookAt(const Vec& target)
 {
  setViewDirection(target - position());
 }
@@ -957,19 +957,19 @@ void Camera::lookAt(const Vec& target)

 You should therefore orientate the Camera before you call this method. See lookAt(),
 setOrientation() and setUpVector(). */
-void Camera::fitSphere(const Vec& center, float radius)
+void AppGLWidget_Camera::fitSphere(const Vec& center, float radius)
 {
  float distance = 0.0f;
  switch (type())
    {
-    case Camera::PERSPECTIVE :
+    case AppGLWidget_Camera::PERSPECTIVE :
      {
 	const float yview = radius / sin(fieldOfView()/2.0);
 	const float xview = radius / sin(horizontalFieldOfView()/2.0);
 	distance = qMax(xview,yview);
 	break;
      }
-    case Camera::ORTHOGRAPHIC :
+    case AppGLWidget_Camera::ORTHOGRAPHIC :
      {
 	distance = ((center-revolveAroundPoint()) * viewDirection()) + (radius / orthoCoef_);
 	break;
@@ -981,7 +981,7 @@ void Camera::fitSphere(const Vec& center, float radius)

 /*! Moves the Camera so that the (world axis aligned) bounding box (\p min, \p max) is entirely
  visible, using fitSphere(). */
-void Camera::fitBoundingBox(const Vec& min, const Vec& max)
+void AppGLWidget_Camera::fitBoundingBox(const Vec& min, const Vec& max)
 {
  float diameter = qMax(fabs(max[1]-min[1]), fabs(max[0]-min[0]));
  diameter = qMax(fabsf(max[2]-min[2]), diameter);
@@ -1001,7 +1001,7 @@ void Camera::fitBoundingBox(const Vec& min, const Vec& max)
 When \p noMove is \c true (default), the Camera position() is left unchanged, which is an intuitive
 behavior when the Camera is in a walkthrough fly mode (see the QGLViewer::MOVE_FORWARD and
 QGLViewer::MOVE_BACKWARD QGLViewer::MouseAction). */
-void Camera::setUpVector(const Vec& up, bool noMove)
+void AppGLWidget_Camera::setUpVector(const Vec& up, bool noMove)
 {
  Quaternion q(Vec(0.0, 1.0, 0.0), frame()->transformOf(up));

@@ -1025,7 +1025,7 @@ void Camera::setUpVector(const Vec& up, bool noMove)

 This method can be useful to create Quicktime VR panoramic sequences, see the
 QGLViewer::saveSnapshot() documentation for details. */
-void Camera::setOrientation(float theta, float phi)
+void AppGLWidget_Camera::setOrientation(float theta, float phi)
 {
  Vec axis(0.0, 1.0, 0.0);
  const Quaternion rot1(axis, theta);
@@ -1035,7 +1035,7 @@ void Camera::setOrientation(float theta, float phi)
 }

 /*! Sets the Camera orientation(), defined in the world coordinate system. */
-void Camera::setOrientation(const Quaternion& q)
+void AppGLWidget_Camera::setOrientation(const Quaternion& q)
 {
  frame()->setOrientation(q);
  //frame()->updateFlyUpVector();
@@ -1046,7 +1046,7 @@ void Camera::setOrientation(const Quaternion& q)

 The Camera position() is not modified. The Camera is rotated so that the horizon (defined by its
 upVector()) is preserved. See also lookAt() and setUpVector(). */
-void Camera::setViewDirection(const Vec& direction)
+void AppGLWidget_Camera::setViewDirection(const Vec& direction)
 {
  if (direction.squaredNorm() < 1E-10)
    return;
@@ -1096,7 +1096,7 @@ Only the orientation() and position() of the Camera are modified.

 \note If you defined your matrix as \c GLdouble \c mvm[4][4], pass \c &(mvm[0][0]) as a
 parameter. */
-void Camera::setFromModelViewMatrix(const GLdouble* const modelViewMatrix)
+void AppGLWidget_Camera::setFromModelViewMatrix(const GLdouble* const modelViewMatrix)
 {
  // Get upper left (rotation) matrix
  double upperLeft[3][3];
@@ -1134,7 +1134,7 @@ void Camera::setFromModelViewMatrix(const GLdouble* const modelViewMatrix)
 atan(1.0/projectionMatrix[5]).

 This code was written by Sylvain Paris. */
-void Camera::setFromProjectionMatrix(const float matrix[12])
+void AppGLWidget_Camera::setFromProjectionMatrix(const float matrix[12])
 {
  // The 3 lines of the matrix are the normals to the planes x=0, y=0, z=0
  // in the camera CS. As we normalize them, we do not need the 4th coordinate.
@@ -1284,7 +1284,7 @@ void Camera::setFromProjectionMatrix(const GLdouble* projectionMatrix)
 ///////////////////////// Camera to world transform ///////////////////////

 /*! Same as cameraCoordinatesOf(), but with \c float[3] parameters (\p src and \p res may be identical pointers). */
-void Camera::getCameraCoordinatesOf(const float src[3], float res[3]) const
+void AppGLWidget_Camera::getCameraCoordinatesOf(const float src[3], float res[3]) const
 {
  Vec r = cameraCoordinatesOf(Vec(src));
  for (int i=0; i<3; ++i)
@@ -1292,7 +1292,7 @@ void Camera::getCameraCoordinatesOf(const float src[3], float res[3]) const
 }

 /*! Same as worldCoordinatesOf(), but with \c float[3] parameters (\p src and \p res may be identical pointers). */
-void Camera::getWorldCoordinatesOf(const float src[3], float res[3]) const
+void AppGLWidget_Camera::getWorldCoordinatesOf(const float src[3], float res[3]) const
 {
  Vec r = worldCoordinatesOf(Vec(src));
  for (int i=0; i<3; ++i)
@@ -1304,7 +1304,7 @@ void Camera::getWorldCoordinatesOf(const float src[3], float res[3]) const
 This method is mainly used in conjunction with \c gluProject, which requires such a viewport.
 Returned values are (0, screenHeight(), screenWidth(), - screenHeight()), so that the origin is
 located in the \e upper left corner of the window (Qt style coordinate system). */
-void Camera::getViewport(GLint viewport[4]) const
+void AppGLWidget_Camera::getViewport(GLint viewport[4]) const
 {
  viewport[0] = 0;
  viewport[1] = screenHeight();
@@ -1337,7 +1337,7 @@ void Camera::getViewport(GLint viewport[4]) const
 If you call this method several times with no change in the matrices, consider precomputing the
 projection times modelview matrix to save computation time if required (\c P x \c M in the \c
 gluProject man page). */
-Vec Camera::projectedCoordinatesOf(const Vec& src, const Frame* frame) const
+Vec AppGLWidget_Camera::projectedCoordinatesOf(const Vec& src, const Frame* frame) const
 {
  GLdouble x,y,z;
  static GLint viewport[4];
@@ -1379,7 +1379,7 @@ Vec Camera::projectedCoordinatesOf(const Vec& src, const Frame* frame) const
 This method is not computationally optimized. If you call it several times with no change in the
 matrices, you should buffer the entire inverse projection matrix (modelview, projection and then
 viewport) to speed-up the queries. See the \c gluUnProject man page for details. */
-Vec Camera::unprojectedCoordinatesOf(const Vec& src, const Frame* frame) const
+Vec AppGLWidget_Camera::unprojectedCoordinatesOf(const Vec& src, const Frame* frame) const
 {
  GLdouble x,y,z;
  static GLint viewport[4];
@@ -1392,7 +1392,7 @@ Vec Camera::unprojectedCoordinatesOf(const Vec& src, const Frame* frame) const
 }

 /*! Same as projectedCoordinatesOf(), but with \c float parameters (\p src and \p res can be identical pointers). */
-void Camera::getProjectedCoordinatesOf(const float src[3], float res[3], const Frame* frame) const
+void AppGLWidget_Camera::getProjectedCoordinatesOf(const float src[3], float res[3], const Frame* frame) const
 {
  Vec r = projectedCoordinatesOf(Vec(src), frame);
  for (int i=0; i<3; ++i)
@@ -1400,7 +1400,7 @@ void Camera::getProjectedCoordinatesOf(const float src[3], float res[3], const F
 }

 /*! Same as unprojectedCoordinatesOf(), but with \c float parameters (\p src and \p res can be identical pointers). */
-void Camera::getUnprojectedCoordinatesOf(const float src[3], float res[3], const Frame* frame) const
+void AppGLWidget_Camera::getUnprojectedCoordinatesOf(const float src[3], float res[3], const Frame* frame) const
 {
  Vec r = unprojectedCoordinatesOf(Vec(src), frame);
  for (int i=0; i<3; ++i)
@@ -1532,11 +1532,11 @@ camera()->deletePath(i);
 This method is useful for analytical intersection in a selection method.

 See the <a href="../examples/select.html">select example</a> for an illustration. */
-void Camera::convertClickToLine(const Point& pixel, Vec& orig, Vec& dir) const
+void AppGLWidget_Camera::convertClickToLine(const Point& pixel, Vec& orig, Vec& dir) const
 {
  switch (type())
    {
-    case Camera::PERSPECTIVE:
+    case AppGLWidget_Camera::PERSPECTIVE:
      orig = position();
      dir = Vec( ((2.0 * pixel.x() / screenWidth()) - 1.0) * tan(fieldOfView()/2.0) * aspectRatio(),
 		 ((2.0 * (screenHeight()-pixel.y()) / screenHeight()) - 1.0) * tan(fieldOfView()/2.0),
@@ -1545,7 +1545,7 @@ void Camera::convertClickToLine(const Point& pixel, Vec& orig, Vec& dir) const
      dir.normalize();
      break;

-    case Camera::ORTHOGRAPHIC:
+    case AppGLWidget_Camera::ORTHOGRAPHIC:
      {
 	GLdouble w,h;
 	getOrthoWidthHeight(w,h);
@@ -1559,9 +1559,9 @@ void Camera::convertClickToLine(const Point& pixel, Vec& orig, Vec& dir) const

 #ifndef DOXYGEN
 /*! This method has been deprecated in libQGLViewer version 2.2.0 */
-void Camera::drawCamera(float, float, float)
+void AppGLWidget_Camera::drawCamera(float, float, float)
 {
-  cout << "drawCamera is deprecated. Use Camera::draw() instead.";
+  cout << "drawCamera is deprecated. Use AppGLWidget_Camera::draw() instead.";
 }
 #endif

@@ -1585,7 +1585,7 @@ The Camera is then correctly positioned and orientated.

 \note The drawing of a QGLViewer's own QGLViewer::camera() should not be visible, but may create
 artefacts due to numerical imprecisions. */
-void Camera::draw(bool drawFarPlane, float scale) const
+void AppGLWidget_Camera::draw(bool drawFarPlane, float scale) const
 {
  glPushMatrix();
  glMultMatrixd(frame()->worldMatrix());
@@ -1598,7 +1598,7 @@ void Camera::draw(bool drawFarPlane, float scale) const

  switch (type())
    {
-    case Camera::PERSPECTIVE:
+    case AppGLWidget_Camera::PERSPECTIVE:
      {
 	points[0].y = points[0].z * tan(fieldOfView()/2.0);
 	points[0].x = points[0].y * aspectRatio();
@@ -1609,7 +1609,7 @@ void Camera::draw(bool drawFarPlane, float scale) const
 	points[1].x = ratio * points[0].x;
 	break;
      }
-    case Camera::ORTHOGRAPHIC:
+    case AppGLWidget_Camera::ORTHOGRAPHIC:
      {
 	GLdouble hw, hh;
 	getOrthoWidthHeight(hw, hh);
@@ -1658,7 +1658,7 @@ void Camera::draw(bool drawFarPlane, float scale) const
  // Frustum lines
  switch (type())
    {
-    case Camera::PERSPECTIVE :
+    case AppGLWidget_Camera::PERSPECTIVE :
      glBegin(GL_LINES);
      glVertex3f(0.0f, 0.0f, 0.0f);
      glVertex3f( points[farIndex].x,  points[farIndex].y, -points[farIndex].z);
@@ -1670,7 +1670,7 @@ void Camera::draw(bool drawFarPlane, float scale) const
      glVertex3f( points[farIndex].x, -points[farIndex].y, -points[farIndex].z);
      glEnd();
      break;
-    case Camera::ORTHOGRAPHIC :
+    case AppGLWidget_Camera::ORTHOGRAPHIC :
      if (drawFarPlane)
 	{
 	  glBegin(GL_LINES);
@@ -1713,7 +1713,7 @@ applied in an other viewer to visualize the culling results:
 glClipPlane(GL_CLIP_PLANE0, coef[2]);
 glClipPlane(GL_CLIP_PLANE1, coef[3]);
 \endcode */
-void Camera::getFrustumPlanesCoefficients(GLdouble coef[6][4]) const
+void AppGLWidget_Camera::getFrustumPlanesCoefficients(GLdouble coef[6][4]) const
 {
  // Computed once and for all
  const Vec pos          = position();
@@ -1727,7 +1727,7 @@ void Camera::getFrustumPlanesCoefficients(GLdouble coef[6][4]) const
  
  switch (type())
    {
-    case Camera::PERSPECTIVE :
+    case AppGLWidget_Camera::PERSPECTIVE :
      {
 	const float hhfov = horizontalFieldOfView() / 2.0;
 	const float chhfov = cos(hhfov);
@@ -1768,7 +1768,7 @@ void Camera::getFrustumPlanesCoefficients(GLdouble coef[6][4]) const
 	
 	break;
      }
-    case Camera::ORTHOGRAPHIC :
+    case AppGLWidget_Camera::ORTHOGRAPHIC :
      normal[0] = -right;
      normal[1] =  right;
      normal[4] =  up;
--- a/source/blender/freestyle/intern/app_blender/AppGLWidget_camera.h
+++ b/source/blender/freestyle/intern/app_blender/AppGLWidget_camera.h
@@ -79,15 +79,15 @@
  A Camera can also be used outside of a QGLViewer or even without OpenGL for its coordinate system
  conversion capabilities. Note however that some of them explicitly rely on the presence of a
  Z-buffer. \nosubgrouping */
-  class Camera
+  class AppGLWidget_Camera
  {

  public:
-    Camera();
-    virtual ~Camera();
+    AppGLWidget_Camera();
+    virtual ~AppGLWidget_Camera();

-    Camera(const Camera& camera);
-    Camera& operator=(const Camera& camera);
+    AppGLWidget_Camera(const AppGLWidget_Camera& camera);
+    AppGLWidget_Camera& operator=(const AppGLWidget_Camera& camera);


    /*! Enumerates the two possible types of Camera.
--- a/source/blender/freestyle/intern/app_blender/AppGLWidget_constraint.h
+++ b/source/blender/freestyle/intern/app_blender/AppGLWidget_constraint.h
@@ -31,7 +31,7 @@

 //namespace qglviewer {
  class Frame;
-  class Camera;
+  class AppGLWidget_Camera;

  /*! \brief An interface class for Frame constraints.
  \class Constraint constraint.h QGLViewer/constraint.h
@@ -322,7 +322,7 @@
  class CameraConstraint : public AxisPlaneConstraint
  {
  public:
-    explicit CameraConstraint(const Camera* const camera);
+    explicit CameraConstraint(const AppGLWidget_Camera* const camera);
    /*! Virtual destructor. Empty. */
    virtual ~CameraConstraint() {};

@@ -330,10 +330,10 @@
    virtual void constrainRotation   (Quaternion& rotation, Frame* const frame);

    /*! Returns the associated Camera. Set using the CameraConstraint constructor. */
-    const Camera* camera() const { return camera_; };
+    const AppGLWidget_Camera* camera() const { return camera_; };

  private:
-    const Camera* const camera_;
+    const AppGLWidget_Camera* const camera_;
  };

 //} // namespace qglviewer
--- a/source/blender/freestyle/intern/app_blender/AppGLWidget_manipulatedCameraFrame.cpp
+++ b/source/blender/freestyle/intern/app_blender/AppGLWidget_manipulatedCameraFrame.cpp
@@ -71,14 +71,14 @@ ManipulatedCameraFrame::ManipulatedCameraFrame(const ManipulatedCameraFrame& mcf
 ////////////////////////////////////////////////////////////////////////////////

 /*! Returns a Quaternion that is a rotation around current camera Y, proportionnal to the horizontal mouse position. */
-Quaternion ManipulatedCameraFrame::turnQuaternion(int x, const Camera* const camera)
+Quaternion ManipulatedCameraFrame::turnQuaternion(int x, const AppGLWidget_Camera* const camera)
 {
  return Quaternion(Vec(0.0, 1.0, 0.0), rotationSensitivity()*(prevPos_.x()-x)/camera->screenWidth());
 }

 /*! Returns a Quaternion that is the composition of two rotations, inferred from the
  mouse pitch (X axis) and yaw (flyUpVector() axis). */
-Quaternion ManipulatedCameraFrame::pitchYawQuaternion(int x, int y, const Camera* const camera)
+Quaternion ManipulatedCameraFrame::pitchYawQuaternion(int x, int y, const AppGLWidget_Camera* const camera)
 {
  const Quaternion rotX(Vec(1.0, 0.0, 0.0), rotationSensitivity()*(prevPos_.y()-y)/camera->screenHeight());
  const Quaternion rotY(transformOf(flyUpVector()), rotationSensitivity()*(prevPos_.x()-x)/camera->screenWidth());
--- a/source/blender/freestyle/intern/app_blender/AppGLWidget_manipulatedCameraFrame.h
+++ b/source/blender/freestyle/intern/app_blender/AppGLWidget_manipulatedCameraFrame.h
@@ -50,7 +50,7 @@
  class ManipulatedCameraFrame : public ManipulatedFrame
  {
 #ifndef DOXYGEN
-    friend class Camera;
+    friend class AppGLWidget_Camera;
    //friend class ::QGLViewer;
 #endif

@@ -151,8 +151,8 @@

  private:
    void updateFlyUpVector();
-    Quaternion turnQuaternion(int x, const Camera* const camera);
-    Quaternion pitchYawQuaternion(int x, int y, const Camera* const camera);
+    Quaternion turnQuaternion(int x, const AppGLWidget_Camera* const camera);
+    Quaternion pitchYawQuaternion(int x, int y, const AppGLWidget_Camera* const camera);

  private:
    // Fly mode data
--- a/source/blender/freestyle/intern/app_blender/AppGLWidget_manipulatedFrame.cpp
+++ b/source/blender/freestyle/intern/app_blender/AppGLWidget_manipulatedFrame.cpp
@@ -97,7 +97,7 @@ static float projectOnBall(float x, float y)
 #ifndef DOXYGEN
 /*! Returns a quaternion computed according to the mouse motion. Mouse positions are projected on a
 deformed ball, centered on (\p cx,\p cy). */
-Quaternion ManipulatedFrame::deformedBallQuaternion(int x, int y, float cx, float cy, const Camera* const camera)
+Quaternion ManipulatedFrame::deformedBallQuaternion(int x, int y, float cx, float cy, const AppGLWidget_Camera* const camera)
 {
  // Points on the deformed ball
  float px = rotationSensitivity() * (prevPos_.x()  - cx) / camera->screenWidth();
--- a/source/blender/freestyle/intern/app_blender/AppGLWidget_manipulatedFrame.h
+++ b/source/blender/freestyle/intern/app_blender/AppGLWidget_manipulatedFrame.h
@@ -220,7 +220,7 @@

 #ifndef DOXYGEN
  protected:
-    Quaternion deformedBallQuaternion(int x, int y, float cx, float cy, const Camera* const camera);
+    Quaternion deformedBallQuaternion(int x, int y, float cx, float cy, const AppGLWidget_Camera* const camera);

    int action_; // Should be a QGLViewer::MouseAction, but include loop
    Constraint* previousConstraint_; // When manipulation is without Contraint.
--- a/source/blender/freestyle/intern/app_blender/api.cpp
+++ b/source/blender/freestyle/intern/app_blender/api.cpp
@@ -9,6 +9,8 @@
 extern "C" {
 #endif

+#include "DNA_camera_types.h"
+
 #include "render_types.h"
 #include "renderpipeline.h"

@@ -54,14 +56,25 @@ extern "C" {
 		
 		// initialize camera
 		Object* maincam_obj = re->scene->camera;
+		Camera *cam = (Camera*) maincam_obj->data;
+
+		if(cam->type == CAM_PERSP){
+			view->_camera->setType(AppGLWidget_Camera::PERSPECTIVE);
+			view->_camera->setHorizontalFieldOfView( M_PI / 180.0f * cam->angle );
+		}
+		else if (cam->type == CAM_ORTHO){
+			view->_camera->setType(AppGLWidget_Camera::ORTHOGRAPHIC);
+			// view->_camera->setFocusDistance does not seem to work
+			// integrate cam->ortho_scale parameter
+		}
+		
 		Vec camPosition(maincam_obj->obmat[3][0], maincam_obj->obmat[3][1], maincam_obj->obmat[3][2]);
 		Vec camUp( re->viewmat[0][1], re->viewmat[1][1], re->viewmat[2][1]);
-		Vec camDirection( -re->viewmat[0][2], -re->viewmat[1][2], - re->viewmat[2][2]);
-		
-		view->_camera->setType(Camera::PERSPECTIVE);
+		Vec camDirection( -re->viewmat[0][2], -re->viewmat[1][2], -re->viewmat[2][2]);
 		view->_camera->setPosition(camPosition);
 		view->_camera->setUpVector(camUp);	
 		view->_camera->setViewDirection(camDirection);	
+	
 		
 		// export scene to 3ds format
 		string script_3ds_export = 	pathconfig.getProjectDir() +