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standalone/gengeovolume.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.
*
*----------------------------------------------------------------------------
*/
#include <stdio.h>
#include <iostream>
#include <CMD/CMD_Args.h>
#include <UT/UT_Assert.h>
#include <GU/GU_Detail.h>
static void
usage(const char *program)
{
std::cerr << "Usage: " << program << "\n";
}
static inline float
sphereVal(int i, int j, int k, int xres, int yres, int zres)
{
float x, y, z;
x = 2.0F * (i-0.5F*xres+0.5F) / xres;
y = 2.0F * (j-0.5F*yres+0.5F) / yres;
z = 2.0F * (k-0.5F*zres+0.5F) / zres;
return SYSsqrt(x*x + y*y + z*z) < 1.0F ? 1.0F : 0;
}
// Generate a volume primitive with a resolution of 16x16x16. The volume
// primitive will be dumped as binary output to standard output.
//
// Build using:
// hcustom -s gengeovolume.C
//
// Example usage:
// gengeovolume > volume.bgeo
int
main(int argc, char *argv[])
{
CMD_Args args;
GU_Detail gdp;
GU_PrimVolume *volume;
const int xres = 16;
const int yres = 16;
const int zres = 16;
const int binary = 1;
int i, j, k;
args.initialize(argc, argv);
if (args.argc() != 1)
{
usage(argv[0]);
return 1;
}
// The COW handle will write data to the voxel array on destruction
{
handle->size(xres, yres, zres);
for (i = 0; i < xres; i++)
for (j = 0; j < yres; j++)
for (k = 0; k < zres; k++)
handle->setValue(i, j, k,
sphereVal(i, j, k, xres, yres, zres));
}
// Can't be seekable because size unknown, do not write index
gdp.save(std::cout, binary, NULL);
return 0;
}