75 lines
1.8 KiB
C++
75 lines
1.8 KiB
C++
// Filename: cLerpInterval.h
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// Created by: drose (27Aug02)
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//
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////////////////////////////////////////////////////////////////////
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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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////////////////////////////////////////////////////////////////////
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#ifndef CLERPINTERVAL_H
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#define CLERPINTERVAL_H
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#include "directbase.h"
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#include "cInterval.h"
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////////////////////////////////////////////////////////////////////
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// Class : CLerpInterval
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// Description : The base class for a family of intervals that
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// linearly interpolate one or more numeric values over
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// time.
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////////////////////////////////////////////////////////////////////
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class EXPCL_DIRECT CLerpInterval : public CInterval {
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PUBLISHED:
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enum BlendType {
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BT_no_blend,
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BT_ease_in,
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BT_ease_out,
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BT_ease_in_out,
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BT_invalid
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};
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public:
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INLINE CLerpInterval(const string &name, double duration,
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BlendType blend_type);
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PUBLISHED:
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INLINE BlendType get_blend_type() const;
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static BlendType string_blend_type(const string &blend_type);
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protected:
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double compute_delta(double t) const;
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private:
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BlendType _blend_type;
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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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CInterval::init_type();
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register_type(_type_handle, "CLerpInterval",
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CInterval::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 "cLerpInterval.I"
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#endif
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