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HOM/SOP_HOMWave.C
/*
* 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.
*
*----------------------------------------------------------------------------
* This SOP provides an example of how to access HOM from C++.
*
* NOTE:
* See SOP_HOMWave.py for a pure Python implementation of this SOP.
*/
/// This SOP provides an example of how to access HOM from C++. See
/// SOP_HOMWave.py and related files for a pure Python implementation of this
/// SOP.
/// @see @ref HOM/SOP_HOMWave.py, @ref HOM/SOP_HOMWaveNumpy.py, @ref HOM/SOP_HOMWaveInlinecpp.py, @ref SOP/SOP_CPPWave.C, @ref SOP/SOP_VEXWave.vfl
#include "SOP_HOMWave.h"
#include <HOM/HOM_Module.h>
#include <HOM/HOM_Point.h>
using namespace HDK_Sample;
void
{
"hom_wave", "HOM Wave",
/*min_num_inputs=*/1, /*max_num_inputs=*/1));
}
{
return new SOP_HOMWave(net, name, op);
}
// List any of the sop's parameters here:
};
SOP_HOMWave::SOP_HOMWave(
OP_Network *network, const char *name, OP_Operator *op_type)
: SOP_HOM(network, name, op_type)
{
}
void
SOP_HOMWave::cookWithHOM()
{
HOM_Module &hou = HOM();
// This C++ code does the equivalent of this Python code:
//
// import math
// geo = hou.pwd().geometry()
// f = hou.frame() * 0.03
// for p in geo.points():
// pos = p.position()
// pos[1] = math.sin(pos[0] * 0.2 + pos[2] * 0.3 + f)
// p.setPosition(pos)
//
// It modifies the input geometry's y coordinate to create an animated
// sin wave. Connect this sop to the output of a grid and press play.
dynamic_cast<HOM_SopNode*>(hou.pwd()))->geometry());
double f = hou.frame() * 0.03;
std::vector<HOM_ElemPtr<HOM_Point> > points = geo->points();
std::vector<double> pos_vector(3);
for (int i=0; i<points.size(); ++i)
{
UT_UniquePtr<HOM_Point> p(points[i].myPointer);
UT_UniquePtr<HOM_Vector3> pos_ptr(p->position());
HOM_Vector3 &pos = *pos_ptr;
pos[1] = sin(pos[0] * 0.2 + pos[2] * 0.3 + f);
for (int i=0; i<3; ++i)
pos_vector[i] = pos[i];
p->setPosition(pos_vector);
}
}