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- /* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
- *
- * This library is open source and may be redistributed and/or modified under
- * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
- * (at your option) any later version. The full license is in LICENSE file
- * included with this distribution, and on the openscenegraph.org website.
- *
- * This library 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
- * OpenSceneGraph Public License for more details.
- */
- //Build by Zach Deedler
- #ifndef OSGPARTICLE_BOX_PLACER
- #define OSGPARTICLE_BOX_PLACER 1
- #include <osgParticle/CenteredPlacer>
- #include <osgParticle/Particle>
- #include <osgParticle/range>
- #include <osg/CopyOp>
- #include <osg/Object>
- #include <osg/Vec3>
- #include <osg/Math>
- namespace osgParticle
- {
- /** A box-shaped particle placer.
- This placer sets the initial position of incoming particle by choosing a random position
- within the volume of a box; this placer is defined by four parameters: a <I>center point</I>,
- which is inherited directly from <CODE>osgParticle::CenteredPlacer</CODE>, and three ranges of values
- for the valid <I>X</I>, <I>Y</I>, and <I>Z</I> coordinates.
- */
- class BoxPlacer: public CenteredPlacer {
- public:
- inline BoxPlacer();
- inline BoxPlacer(const BoxPlacer& copy, const osg::CopyOp& copyop = osg::CopyOp::SHALLOW_COPY);
- /// Get the range of possible values along the X axis.
- inline const rangef& getXRange() const;
- /// Set the range of possible values along the X axis.
- inline void setXRange(const rangef& r);
- /// Set the range of possible values along the X axis.
- inline void setXRange(float r1, float r2);
- /// Get the range of possible values along the Y axis.
- inline const rangef& getYRange() const;
- /// Set the range of possible values along the Y axis.
- inline void setYRange(const rangef& r);
- /// Set the range of possible values along the Y axis.
- inline void setYRange(float r1, float r2);
- /// Get the range of possible values along the Z axis.
- inline const rangef& getZRange() const;
- /// Set the range of possible values along the Z axis.
- inline void setZRange(const rangef& r);
- /// Set the range of possible values along the Z axis.
- inline void setZRange(float r1, float r2);
- META_Object(osgParticle, BoxPlacer);
- /// Place a particle. Do not call it manually.
- inline void place(Particle* P) const;
- /// return the volume of the box
- inline float volume() const;
- /// return the control position
- inline osg::Vec3 getControlPosition() const;
- protected:
- virtual ~BoxPlacer() {}
- BoxPlacer& operator=(const BoxPlacer&) { return *this; }
- private:
- rangef _x_range;
- rangef _y_range;
- rangef _z_range;
- };
- // INLINE FUNCTIONS
- inline BoxPlacer::BoxPlacer()
- : CenteredPlacer(), _x_range(-1, 1), _y_range(-1, 1), _z_range(-1, 1)
- {
- }
- inline BoxPlacer::BoxPlacer(const BoxPlacer& copy, const osg::CopyOp& copyop)
- : CenteredPlacer(copy, copyop),
- _x_range(copy._x_range), _y_range(copy._y_range), _z_range(copy._z_range)
- {
- }
- inline const rangef& BoxPlacer::getXRange() const
- {
- return _x_range;
- }
- inline void BoxPlacer::setXRange(const rangef& r)
- {
- _x_range = r;
- }
- inline void BoxPlacer::setXRange(float r1, float r2)
- {
- _x_range.minimum = r1;
- _x_range.maximum = r2;
- }
- inline const rangef& BoxPlacer::getYRange() const
- {
- return _y_range;
- }
- inline void BoxPlacer::setYRange(const rangef& r)
- {
- _y_range = r;
- }
- inline void BoxPlacer::setYRange(float r1, float r2)
- {
- _y_range.minimum = r1;
- _y_range.maximum = r2;
- }
- inline const rangef& BoxPlacer::getZRange() const
- {
- return _z_range;
- }
- inline void BoxPlacer::setZRange(const rangef& r)
- {
- _z_range = r;
- }
- inline void BoxPlacer::setZRange(float r1, float r2)
- {
- _z_range.minimum = r1;
- _z_range.maximum = r2;
- }
- inline void BoxPlacer::place(Particle* P) const
- {
- osg::Vec3 pos(
- getCenter().x() + _x_range.get_random(),
- getCenter().y() + _y_range.get_random(),
- getCenter().z() + _z_range.get_random());
- P->setPosition(pos);
- }
- inline float BoxPlacer::volume() const
- {
- return (_x_range.maximum - _x_range.minimum) *
- (_y_range.maximum - _y_range.minimum) *
- (_z_range.maximum - _z_range.minimum);
- }
- inline osg::Vec3 BoxPlacer::getControlPosition() const
- {
- return getCenter();
- }
- }
- #endif
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