94 lines
2.4 KiB
C
94 lines
2.4 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 eggSwitchCondition.h
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* @author drose
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* @date 1999-02-08
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*/
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#ifndef EGGSWITCHCONDITION
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#define EGGSWITCHCONDITION
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#include "pandabase.h"
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#include "eggObject.h"
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#include "luse.h"
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/**
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* This corresponds to a <SwitchCondition> entry within a group. It indicates
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* the condition at which a level-of-detail is switched in or out. This is
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* actually an abstract base class for potentially any number of specific
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* different kinds of switching conditions; presently, only a <Distance> type
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* is actually supported.
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*/
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class EXPCL_PANDA_EGG EggSwitchCondition : public EggObject {
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PUBLISHED:
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virtual EggSwitchCondition *make_copy() const=0;
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virtual void write(std::ostream &out, int indent_level) const=0;
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virtual void transform(const LMatrix4d &mat)=0;
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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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EggObject::init_type();
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register_type(_type_handle, "EggSwitchCondition",
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EggObject::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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/**
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* A SwitchCondition that switches the levels-of-detail based on distance from
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* the camera's eyepoint.
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*/
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class EXPCL_PANDA_EGG EggSwitchConditionDistance : public EggSwitchCondition {
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PUBLISHED:
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explicit EggSwitchConditionDistance(double switch_in, double switch_out,
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const LPoint3d ¢er, double fade = 0.0);
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virtual EggSwitchCondition *make_copy() const;
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virtual void write(std::ostream &out, int indent_level) const;
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virtual void transform(const LMatrix4d &mat);
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public:
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double _switch_in, _switch_out, _fade;
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LPoint3d _center;
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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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EggSwitchCondition::init_type();
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register_type(_type_handle, "EggSwitchConditionDistance",
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EggSwitchCondition::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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private:
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static TypeHandle _type_handle;
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};
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#endif
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