74 lines
1.9 KiB
C
74 lines
1.9 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 geomPatches.h
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* @author drose
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* @date 2012-04-27
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*/
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#ifndef GEOMPATCHES_H
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#define GEOMPATCHES_H
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#include "pandabase.h"
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#include "geomPrimitive.h"
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/**
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* Defines a series of "patches", fixed-size groupings of vertices that must
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* be processed by a tessellation shader.
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*/
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class EXPCL_PANDA_GOBJ GeomPatches : public GeomPrimitive {
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PUBLISHED:
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explicit GeomPatches(int num_vertices_per_patch, UsageHint usage_hint);
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GeomPatches(const GeomPatches ©);
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virtual ~GeomPatches();
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ALLOC_DELETED_CHAIN(GeomPatches);
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public:
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virtual PT(GeomPrimitive) make_copy() const;
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virtual PrimitiveType get_primitive_type() const;
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virtual int get_num_vertices_per_primitive() const;
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public:
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virtual bool draw(GraphicsStateGuardianBase *gsg,
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const GeomPrimitivePipelineReader *reader,
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bool force) const;
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private:
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int _num_vertices_per_patch;
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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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void fillin(DatagramIterator &scan, BamReader *manager);
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static TypedWritable *make_from_bam(const FactoryParams ¶ms);
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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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GeomPrimitive::init_type();
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register_type(_type_handle, "GeomPatches",
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GeomPrimitive::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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friend class Geom;
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};
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#endif
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