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Diffstat (limited to 'source/blender/freestyle/intern/app_blender/manipulatedFrame.cpp')
| -rw-r--r-- | source/blender/freestyle/intern/app_blender/manipulatedFrame.cpp | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/source/blender/freestyle/intern/app_blender/manipulatedFrame.cpp b/source/blender/freestyle/intern/app_blender/manipulatedFrame.cpp new file mode 100644 index 00000000000..6721204383d --- /dev/null +++ b/source/blender/freestyle/intern/app_blender/manipulatedFrame.cpp @@ -0,0 +1,116 @@ +/**************************************************************************** + + Copyright (C) 2002-2007 Gilles Debunne (Gilles.Debunne@imag.fr) + + This file is part of the QGLViewer library. + Version 2.2.6-3, released on August 28, 2007. + + http://artis.imag.fr/Members/Gilles.Debunne/QGLViewer + + libQGLViewer 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. + + libQGLViewer 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 libQGLViewer; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +#include "manipulatedFrame.h" +//#include "qglviewer.h" +#include "camera.h" + +//using namespace qglviewer; +using namespace std; + +/*! Default constructor. + + The translation is set to (0,0,0), with an identity rotation (0,0,0,1) (see Frame constructor + for details). + + The different sensitivities are set to their default values (see rotationSensitivity(), + translationSensitivity(), spinningSensitivity() and wheelSensitivity()). */ +ManipulatedFrame::ManipulatedFrame() +{ + // #CONNECTION# initFromDOMElement and accessor docs + setRotationSensitivity(1.0f); + setTranslationSensitivity(1.0f); + setSpinningSensitivity(0.3f); + setWheelSensitivity(1.0f); + + isSpinning_ = false; + previousConstraint_ = false; + + //connect(&spinningTimer_, SIGNAL(timeout()), SLOT(spinUpdate())); +} + +/*! Equal operator. Calls Frame::operator=() and then copy attributes. */ +ManipulatedFrame& ManipulatedFrame::operator=(const ManipulatedFrame& mf) +{ + Frame::operator=(mf); + + setRotationSensitivity(mf.rotationSensitivity()); + setTranslationSensitivity(mf.translationSensitivity()); + setSpinningSensitivity(mf.spinningSensitivity()); + setWheelSensitivity(mf.wheelSensitivity()); + + mouseSpeed_ = 0.0; + dirIsFixed_ = false; + keepsGrabbingMouse_ = false; + + return *this; +} + +/*! Copy constructor. Performs a deep copy of all attributes using operator=(). */ +ManipulatedFrame::ManipulatedFrame(const ManipulatedFrame& mf) + : Frame(mf) +{ + (*this)=mf; +} + + + +//////////////////////////////////////////////////////////////////////////////// + +/*! Returns "pseudo-distance" from (x,y) to ball of radius size. +\arg for a point inside the ball, it is proportional to the euclidean distance to the ball +\arg for a point outside the ball, it is proportional to the inverse of this distance (tends to +zero) on the ball, the function is continuous. */ +static float projectOnBall(float x, float y) +{ + // If you change the size value, change angle computation in deformedBallQuaternion(). + const float size = 1.0f; + const float size2 = size*size; + const float size_limit = size2*0.5; + + const float d = x*x + y*y; + return d < size_limit ? sqrt(size2 - d) : size_limit/sqrt(d); +} + +#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) +{ + // Points on the deformed ball + float px = rotationSensitivity() * (prevPos_.x() - cx) / camera->screenWidth(); + float py = rotationSensitivity() * (cy - prevPos_.y()) / camera->screenHeight(); + float dx = rotationSensitivity() * (x - cx) / camera->screenWidth(); + float dy = rotationSensitivity() * (cy - y) / camera->screenHeight(); + + const Vec p1(px, py, projectOnBall(px, py)); + const Vec p2(dx, dy, projectOnBall(dx, dy)); + // Approximation of rotation angle + // Should be divided by the projectOnBall size, but it is 1.0 + const Vec axis = cross(p2,p1); + const float angle = 2.0 * asin(sqrt(axis.squaredNorm() / p1.squaredNorm() / p2.squaredNorm())); + return Quaternion(axis, angle); +} +#endif // DOXYGEN |