FloatingSubtreeNode.cc

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/*
 * This class is available on C++11 compilers only.
 */
#if (defined(_MSC_VER) && (_MSC_VER >= 1900)) || __cplusplus > 199711L || defined(__GXX_EXPERIMENTAL_CXX0X__)

#include "../../ACG/Scenegraph/FloatingSubtreeNode.hh"

#include <ACG/GL/IRenderer.hh>

namespace ACG {
namespace SceneGraph {

FloatingSubtreeNode::FloatingSubtreeNode(
        GLMatrixd modelview_override,
        BaseNode *_parent, const std::string &_name)

    : BaseNode(_parent, _name),
      modelview_override_(std::move(modelview_override)),
      enable_modelview_override_(true),
      enable_overlay_(true) {

    modelview_override_inv_ = modelview_override_;
    modelview_override_inv_.invert();
}

FloatingSubtreeNode::~FloatingSubtreeNode() {

}

void FloatingSubtreeNode::enter(GLState &_state,
        const DrawModes::DrawMode &_drawMode) {
    if (enable_modelview_override_) {
        _state.push_modelview_matrix();
        _state.set_modelview(modelview_override_, modelview_override_inv_);
    }
}

void FloatingSubtreeNode::enter(IRenderer* _renderer, GLState& _state,
        const DrawModes::DrawMode& _drawMode) {
    FloatingSubtreeNode::enter(_state, _drawMode);
}

void FloatingSubtreeNode::leave(GLState &_state,
        const DrawModes::DrawMode &_drawMode) {
    if (enable_modelview_override_) {
        _state.pop_modelview_matrix();
    }
}

void FloatingSubtreeNode::leave(IRenderer* _renderer, GLState& _state,
        const DrawModes::DrawMode& _drawMode) {
    FloatingSubtreeNode::leave(_state, _drawMode);
    if (enable_overlay_) {
        for (auto &obj_it : _renderer->getCollectedSubtreeObjects()) {
            obj_it.overlay = true;
        }
    }
}


void FloatingSubtreeNode::enterPick(GLState &_state, PickTarget _target,
        const DrawModes::DrawMode &_drawMode) {
    FloatingSubtreeNode::enter(_state, _drawMode);
}

void FloatingSubtreeNode::leavePick(GLState &_state, PickTarget _target,
        const DrawModes::DrawMode &_drawMode) {
    FloatingSubtreeNode::leave(_state, _drawMode);
}

void FloatingSubtreeNode::setModelViewOverride(GLMatrixd modelview_override) {
   modelview_override_ = std::move(modelview_override);
   modelview_override_inv_ = modelview_override_;
   modelview_override_inv_.invert();
}

void FloatingSubtreeNode::boundingBox(Vec3d &_bbMin, Vec3d &_bbMax) {
    if (enable_modelview_override_) {
        if (status() != BaseNode::HideChildren) {
            BoundingBoxAction action;
            BaseNode::ChildIter cIt, cEnd(childrenEnd());

            // Process all children which are not second pass
            for (cIt = childrenBegin(); cIt != cEnd; ++cIt)
                if (~(*cIt)->traverseMode() & BaseNode::SecondPass)
                    traverse(*cIt, action);

            // Process all children which are second pass
            for (cIt = childrenBegin(); cIt != cEnd; ++cIt)
                if ((*cIt)->traverseMode() & BaseNode::SecondPass)
                    traverse(*cIt, action);

            // Transform bounding box to view space
            Vec3d minVS = modelview_override_.transform_point(action.bbMin());
            Vec3d maxVS = modelview_override_.transform_point(action.bbMax());

            _bbMin.minimize(minVS);
            _bbMax.maximize(maxVS);
        }
    }
}

} /* namespace Scenegraph */
} /* namespace ACG */

#endif /* C++11 */