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// Copyright (c) 2020, Joseph Mirabel |
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// Authors: Joseph Mirabel (joseph.mirabel@laas.fr) |
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#include <gepetto/viewer/properties.h> |
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#include <osg/CullFace> |
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#include <osg/LightModel> |
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namespace gepetto { |
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namespace viewer { |
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bool BackfaceDrawingProperty::impl_get(bool& value) { |
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if (!hasReadAccess()) { |
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invalidGet(); |
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return false; |
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} |
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value = static_cast<bool>(stateSet_->getMode(GL_CULL_FACE) & |
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osg::StateAttribute::ON); |
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return true; |
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} |
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bool BackfaceDrawingProperty::impl_set(const bool& on) { |
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if (!hasWriteAccess()) { |
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invalidSet(); |
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return false; |
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} |
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stateSet_->setMode(GL_CULL_FACE, |
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(on ? osg::StateAttribute::ON : osg::StateAttribute::OFF)); |
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if (on) { |
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osg::LightModel* ltModel = new osg::LightModel; |
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ltModel->setTwoSided(on); |
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stateSet_->setAttribute(ltModel); |
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stateSet_->setMode(GL_CULL_FACE, osg::StateAttribute::OFF); |
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} else { |
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stateSet_->removeAttribute(osg::StateAttribute::LIGHTMODEL); |
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stateSet_->setMode(GL_CULL_FACE, osg::StateAttribute::ON); |
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} |
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return true; |
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} |
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} /* namespace viewer */ |
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} /* namespace gepetto */ |
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