98 lines
2.6 KiB
C++
98 lines
2.6 KiB
C++
// -*-c++-*-
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/*
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* OpenSceneGraph - Copyright (C) 1998-2009 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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/*
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* osgFX::Outline - Copyright (C) 2004,2009 Ulrich Hertlein
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*/
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#ifndef OSGFX_OUTLINE_
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#define OSGFX_OUTLINE_
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#include <osgFX/Export>
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#include <osgFX/Effect>
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namespace osgFX
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{
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/**
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* Outline effect.
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* This effect draws a stencil buffer-based outline around an object.
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* Color and width of the outline can be modified.
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* To function correctly the context must be setup with a stencil buffer
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* and the stencil buffer must be cleared to zero before each render.
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*
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* osg::DisplaySettings::instance()->setMinimumNumStencilBits(1);
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* camera->setClearMask(clearMask | GL_STENCIL_BUFFER_BIT);
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* camera->setClearStencil(0);
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*/
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class OSGFX_EXPORT Outline : public Effect
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{
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public:
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/// Constructor.
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Outline();
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/// Copy constructor.
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Outline(const Outline& copy, const osg::CopyOp& op = osg::CopyOp::SHALLOW_COPY) : Effect(copy, op) {
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_width = copy._width;
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_color = copy._color;
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_technique = copy._technique;
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}
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// Effect class info
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META_Effect(osgFX, Outline, "Outline",
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"Stencil buffer based object outline effect.\n"
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"This effect needs a properly setup stencil buffer.",
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"Ulrich Hertlein");
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/// Set outline width.
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void setWidth(float w);
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/// Get outline width.
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float getWidth() const {
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return _width;
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}
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/// Set outline color.
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void setColor(const osg::Vec4& color);
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/// Get outline color.
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const osg::Vec4& getColor() const {
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return _color;
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}
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protected:
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/// Destructor.
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virtual ~Outline() {
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}
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/// Define available techniques.
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bool define_techniques();
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private:
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/// Outline width.
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float _width;
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/// Outline color.
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osg::Vec4 _color;
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/// Technique.
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class OutlineTechnique;
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OutlineTechnique* _technique;
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};
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}
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#endif
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