85 lines
2 KiB
Text
85 lines
2 KiB
Text
/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file occluderNode.I
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* @author jenes
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* @date 2011-03-11
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*/
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/**
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* Replaces the four vertices of the occluder polygon. The vertices should be
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* defined in a counterclockwise orientation when looking at the face of the
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* occluder.
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*/
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INLINE void OccluderNode::
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set_vertices(const LPoint3 &v0, const LPoint3 &v1,
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const LPoint3 &v2, const LPoint3 &v3) {
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_vertices.clear();
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_vertices.reserve(4);
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_vertices.push_back(v0);
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_vertices.push_back(v1);
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_vertices.push_back(v2);
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_vertices.push_back(v3);
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}
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/**
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* Returns the number of vertices in the occluder polygon. This should always
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* return 4.
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*/
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INLINE size_t OccluderNode::
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get_num_vertices() const {
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return _vertices.size();
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}
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/**
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* Returns the nth vertex of the occluder polygon.
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*/
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INLINE const LPoint3 &OccluderNode::
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get_vertex(size_t n) const {
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nassertr(n < _vertices.size(), LPoint3::zero());
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return _vertices[n];
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}
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/**
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* Sets the nth vertex of the occluder polygon.
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*/
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INLINE void OccluderNode::
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set_vertex(size_t n, const LPoint3 &v) {
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nassertv(n < _vertices.size());
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_vertices[n] = v;
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}
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/**
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* If true, the back-face will also be used to occlude
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*/
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INLINE void OccluderNode::set_double_sided(bool value) {
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_double_sided = value;
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}
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/**
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* Is this occluder double-sided
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*/
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INLINE bool OccluderNode::is_double_sided() {
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return _double_sided;
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}
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/**
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* Minimum screen coverage needed before occluder used. Range should be 0 to
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* 1. For example, setting to 0.2 would mean that the occluder needs to cover
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* 20% of the screen to be considered.
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*/
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INLINE void OccluderNode::set_min_coverage(PN_stdfloat value) {
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_min_coverage = value;
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}
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/**
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* Returns the minimum screen coverage.
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*/
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INLINE PN_stdfloat OccluderNode::get_min_coverage() {
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return _min_coverage;
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}
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