node-drawable.cpp

// Copyright (c) 2018, Joseph Mirabel
// Authors: Joseph Mirabel (joseph.mirabel@laas.fr)

#include <gepetto/viewer/node-drawable.h>

#include <osg/Texture2D>
#include <osg/Version>
#include <osgDB/ReadFile>

namespace gepetto {
namespace viewer {
void NodeDrawable::init() {
  addProperty(Vector4Property::create(
      "Color",
      Vector4Property::getterFromMemberFunction(this, &NodeDrawable::getColor),
      Vector4Property::setterFromMemberFunction(this,
                                                &NodeDrawable::setColor)));
}

void NodeDrawable::setColor(const osgVector4& color) {
  shape_drawable_ptr_->setColor(color);
  redrawShape();
  setTransparentRenderingBin(color[3] <
                             Node::TransparencyRenderingBinThreshold);
}

void NodeDrawable::redrawShape() {
#if OSG_VERSION_GREATER_OR_EQUAL(3, 5, 6)
  shape_drawable_ptr_->build();
#else
  shape_drawable_ptr_->dirtyDisplayList();
  shape_drawable_ptr_->dirtyBound();
#endif
  setDirty();
}

osgVector4 NodeDrawable::getColor() const {
  return shape_drawable_ptr_->getColor();
}

void NodeDrawable::setTexture(const std::string& image_path) {
  osg::ref_ptr<osg::Texture2D> texture = new osg::Texture2D;
  texture->setDataVariance(osg::Object::DYNAMIC);
  osg::ref_ptr<osg::Image> image = osgDB::readImageFile(image_path);
  if (!image) {
    std::cerr << " couldn't find texture " << image_path << ", quiting."
              << std::endl;
    return;
  }
  texture->setImage(image);
  geode_ptr_->getStateSet()->setTextureAttributeAndModes(
      0, texture, osg::StateAttribute::ON);
  setDirty();
}
} /* namespace viewer */
}  // namespace gepetto