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CHOP/CHOP_Spring.h
/*
* Copyright (c) 2018
* Side Effects Software Inc. All rights reserved.
*
* Redistribution and use of Houdini Development Kit samples in source and
* binary forms, with or without modification, are permitted provided that the
* following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. The name of Side Effects Software may not be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY SIDE EFFECTS SOFTWARE `AS IS' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL SIDE EFFECTS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*----------------------------------------------------------------------------
* COMMENTS:
* Simulates spring-like action on an input channel.
*/
#ifndef __CHOP_Spring__
#define __CHOP_Spring__
// First Page
#define ARG_SPR_SPRING_CONSTANT (myParmBase + 0)
#define ARG_SPR_MASS (myParmBase + 1)
#define ARG_SPR_DAMPING_CONSTANT (myParmBase + 2)
#define ARG_SPR_METHOD (myParmBase + 3)
#define ARG_SPR_GRAB_INITIAL (myParmBase + 4)
#define ARG_SPR_INITIAL_DISPLACEMENT (myParmBase + 5)
#define ARG_SPR_INITIAL_VELOCITY (myParmBase + 6)
namespace HDK_Sample {
class CHOP_Spring : public CHOP_Realtime
{
public:
const char *,
int start, int end);
virtual bool updateParmsFlags();
virtual bool evalVariableValue(
fpreal &val, int index, int thread);
// Add virtual overload that delegates to the super class to avoid
// shadow warnings.
virtual bool evalVariableValue(
UT_String &v, int i, int thread)
{
v, i, thread);
}
virtual int usesScope() const { return 1; };
virtual int usesSampleMatch() const { return 0; };
virtual int usesUnits() { return getInput(0) ? 0 : 1; };
virtual int isSteady() const;
virtual const char * getTimeSliceExtension() { return "spring"; }
protected:
const char *name,
virtual ~CHOP_Spring();
virtual ut_RealtimeData * newRealtimeDataBlock(const char *name,
const CL_Track *track,
fpreal t);
private:
// First Page
int METHOD()
{ return evalInt(ARG_SPR_METHOD, 0, 0); }
fpreal SPRING_CONSTANT(fpreal t)
fpreal MASS(fpreal t)
{ return evalFloat(ARG_SPR_MASS, 0, t); }
void SET_MASS(fpreal t, fpreal f)
{ setFloat(ARG_SPR_MASS, 0, t, f); }
fpreal DAMPING_CONSTANT(fpreal t)
bool GRAB_INITIAL()
{ return (bool) evalInt(ARG_SPR_GRAB_INITIAL, 0, 0); }
fpreal INITIAL_DISPLACEMENT(fpreal t)
fpreal INITIAL_VELOCITY(fpreal t)
int my_NC;
int my_C;
int myChannelDependent;
int mySteady;
};
} // End HDK_Sample namespace
#endif