112 lines
3.2 KiB
C
112 lines
3.2 KiB
C
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/**
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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 scissorEffect.h
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* @author drose
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* @date 2008-07-30
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*/
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#ifndef SCISSOREFFECT_H
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#define SCISSOREFFECT_H
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#include "pandabase.h"
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#include "renderEffect.h"
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#include "luse.h"
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#include "nodePath.h"
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// Forward declarations
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class Lens;
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/**
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* This provides a higher-level wrapper around ScissorAttrib. It allows for
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* the scissor region to be defined via points relative to the current node,
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* and also performs culling based on the scissor region.
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*/
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class EXPCL_PANDA_PGRAPH ScissorEffect : public RenderEffect {
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private:
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class PointDef {
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public:
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LPoint3 _p;
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NodePath _node;
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};
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ScissorEffect(bool screen, const LVecBase4 &frame,
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const PointDef *points, int num_points, bool clip);
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ScissorEffect(const ScissorEffect ©);
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PUBLISHED:
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static CPT(RenderEffect) make_screen(const LVecBase4 &frame, bool clip = true);
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static CPT(RenderEffect) make_node(bool clip = true);
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static CPT(RenderEffect) make_node(const LPoint3 &a, const LPoint3 &b, const NodePath &node = NodePath());
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static CPT(RenderEffect) make_node(const LPoint3 &a, const LPoint3 &b, const LPoint3 &c, const LPoint3 &d, const NodePath &node = NodePath());
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CPT(RenderEffect) add_point(const LPoint3 &point, const NodePath &node = NodePath()) const;
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INLINE bool is_screen() const;
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INLINE const LVecBase4 &get_frame() const;
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INLINE int get_num_points() const;
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INLINE const LPoint3 &get_point(int n) const;
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MAKE_SEQ(get_points, get_num_points, get_point);
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INLINE NodePath get_node(int n) const;
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MAKE_SEQ(get_nodes, get_num_points, get_node);
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INLINE bool get_clip() const;
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public:
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virtual CPT(RenderEffect) xform(const LMatrix4 &mat) const;
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virtual void output(std::ostream &out) const;
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virtual bool has_cull_callback() const;
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virtual void cull_callback(CullTraverser *trav, CullTraverserData &data,
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CPT(TransformState) &node_transform,
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CPT(RenderState) &node_state) const;
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protected:
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virtual int compare_to_impl(const RenderEffect *other) const;
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private:
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PT(GeometricBoundingVolume) make_frustum(const Lens *lens, const LVecBase4 &frame) const;
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private:
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bool _screen;
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LVecBase4 _frame;
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typedef pvector<PointDef> Points;
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Points _points;
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bool _clip;
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public:
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static void register_with_read_factory();
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virtual void write_datagram(BamWriter *manager, Datagram &dg);
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protected:
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static TypedWritable *make_from_bam(const FactoryParams ¶ms);
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void fillin(DatagramIterator &scan, BamReader *manager);
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public:
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static TypeHandle get_class_type() {
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return _type_handle;
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}
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static void init_type() {
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RenderEffect::init_type();
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register_type(_type_handle, "ScissorEffect",
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RenderEffect::get_class_type());
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}
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virtual TypeHandle get_type() const {
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return get_class_type();
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}
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virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
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private:
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static TypeHandle _type_handle;
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};
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#include "scissorEffect.I"
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#endif
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