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VEX_Ocean.C
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VEX_Ocean.C
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// Yo emacs, this is -*- c++ -*- code.
//
// VEX_Ocean.cpp - Vex functions for building Ocean waves (see
// Ocean.h for more details).
//
// March 2005.
// Drew.Whitehouse@anu.edu.au
//
// $Id: SOP_Ocean.C 132 2005-08-23 04:56:06Z drw900 $
//
// Houdini Ocean Toolkit
// Copyright (C) 2005 Drew Whitehouse, ANU Supercomputer Facility
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Modified by Hans Joergen Kjaernet <hansj@stormstudios.no>, 2012.03.12, to work in H12.
// The modification is rather small and based upon pieces of code from Christian Schnellhammers multithreaded hot port to H12.
// This modification is not multi-threaded.
#include <limits.h>
#include <string>
#include "Ocean.h"
#include <UT/UT_DSOVersion.h>
#include <CMD/CMD_Manager.h>
#include <CMD/CMD_Args.h>
#include <VEX/VEX_VexOp.h>
#include <OP/OP_Director.h>
#include <UT/UT_Math.h>
#include <UT/UT_Interrupt.h>
#include <GU/GU_Detail.h>
#include <GU/GU_PrimPoly.h>
#include <CH/CH_LocalVariable.h>
#include <PRM/PRM_Include.h>
#include <OP/OP_Operator.h>
#include <OP/OP_OperatorTable.h>
//
// vex functions implementing Tessendorf's ocean model
//
struct OceanHolder
{
drw::Ocean *ocean;
drw::OceanContext *context;
float normalize_factor;
float now;
OceanHolder() : ocean(0),context(0)
{
// nothing
}
~OceanHolder()
{
if (ocean) delete ocean;
if (context) delete context;
}
};
static void*
ocean_init()
{
OceanHolder *data = new OceanHolder;
//std::cout << "Ocean VEX Init() " << std::endl << std::flush;
return reinterpret_cast<void*>(data);
}
static void
ocean_cleanup(void* data)
{
//std::cout << "Ocean VEX Cleanup()\n" << std::flush; // never called ?
if (data)
{
delete reinterpret_cast<OceanHolder*>(data);
}
}
static drw::Ocean*
ocean_from_argv(void *argv[])
{
// consumes "IFFFFFFFI" ...
int res = 1 << *(int *)argv[0]; // I
float size = *(float *)argv[1]; // F
float V = *(float *)argv[2]; // F
float l = *(float *)argv[3]; // F
float w = *(float *)argv[4]; // F
float damp = *(float *)argv[5]; // F
float align= *(float *)argv[6]; // F
float depth= *(float *)argv[7]; // F
int seed = *(int *)argv[8]; // I
return new drw::Ocean(res,res,size/float(res),size/float(res),
V,l,0.000001,UTdegToRad(w),
1-damp,align,depth,seed);
}
static void
ocean_eval_ij(int, void *argv[], void *data)
{
OceanHolder *oh = reinterpret_cast<OceanHolder*>(data);
int i = *(int *)argv[0]; // I
int j = *(int *)argv[1]; // I
float now = *(float *)argv[2]; // F
float height_scale = *(float *)argv[3]; // F
int do_chop = *(int *)argv[4]; // I
float chop_amount = *(float *)argv[5]; // F
float *displacement = (float *)argv[6]; // &V
int do_normal = *(int*)argv[7]; // I
float *normal = (float*)argv[8]; // &V
int do_jacobian = *(int*)argv[9]; // I
float *Jminus = (float*)argv[10]; // &F
float *Jplus = (float*)argv[11]; // &F
float *Eminus = (float*)argv[12]; // &V
float *Eplus = (float*)argv[13]; // &V
if (!oh->ocean)
{
oh->ocean = ocean_from_argv(argv+14);
oh->normalize_factor = oh->ocean->get_height_normalize_factor();
oh->context = oh->ocean->new_context(true,do_chop,do_normal,do_jacobian);
oh->ocean->update (now,*oh->context, true,do_chop,do_normal,do_jacobian,
height_scale * oh->normalize_factor,chop_amount);
oh->now = now;
}
if ( oh->now != now ) {
oh->ocean->update (now,*oh->context, true,do_chop,do_normal,do_jacobian,
height_scale * oh->normalize_factor,chop_amount);
oh->now = now;
}
oh->context->eval_ij(i,j);
displacement[0] = oh->context->disp[0];
displacement[1] = oh->context->disp[1];
displacement[2] = oh->context->disp[2];
if (do_normal)
{
normal[0] = oh->context->normal[0];
normal[1] = oh->context->normal[1];
normal[2] = oh->context->normal[2];
}
if (do_jacobian)
{
*Jminus = oh->context->Jminus;
*Jplus = oh->context->Jplus;
Eminus[0] = oh->context->Eminus[0];
Eminus[1] = oh->context->Eminus[1];
Eminus[2] = oh->context->Eminus[2];
Eplus[0] = oh->context->Eplus[0];
Eplus[1] = oh->context->Eplus[1];
Eplus[2] = oh->context->Eplus[2];
}
}
static void
ocean_eval(int, void *argv[], void *data)
{
OceanHolder *oh = reinterpret_cast<OceanHolder*>(data);
float x = *(float *)argv[0]; // F
float z = *(float *)argv[1]; // F
float now = *(float *)argv[2]; // F
float height_scale = *(float *)argv[3]; // F
int do_chop = *(int *)argv[4]; // I
float chop_amount = *(float *)argv[5]; // F
float *displacement = (float *)argv[6]; // &V
int do_normal = *(int*)argv[7]; // I
float *normal = (float*)argv[8]; // &V
int do_jacobian = *(int*)argv[9]; // I
float *Jminus = (float*)argv[10]; // &F
float *Jplus = (float*)argv[11]; // &F
float *Eminus = (float*)argv[12]; // &V
float *Eplus = (float*)argv[13]; // &V
if (!oh->ocean)
{
oh->ocean = ocean_from_argv(argv+14);
oh->normalize_factor = oh->ocean->get_height_normalize_factor();
oh->context = oh->ocean->new_context(true,do_chop,do_normal,do_jacobian);
oh->ocean->update (now,*oh->context, true,do_chop,do_normal,do_jacobian,
height_scale * oh->normalize_factor,chop_amount);
oh->now = now;
}
if ( oh->now != now ) {
oh->ocean->update (now,*oh->context, true,do_chop,do_normal,do_jacobian,
height_scale * oh->normalize_factor,chop_amount);
oh->now = now;
}
// We always choose the catmull rom version here, the linear
// option is primarily for the SOP where realtime feedback is more
// important.
oh->context->eval2_xz(x,z);
displacement[0] = oh->context->disp[0];
displacement[1] = oh->context->disp[1];
displacement[2] = oh->context->disp[2];
if (do_normal)
{
normal[0] = oh->context->normal[0];
normal[1] = oh->context->normal[1];
normal[2] = oh->context->normal[2];
}
if (do_jacobian)
{
*Jminus = oh->context->Jminus;
*Jplus = oh->context->Jplus;
Eminus[0] = oh->context->Eminus[0];
Eminus[1] = oh->context->Eminus[1];
Eminus[2] = oh->context->Eminus[2];
Eplus[0] = oh->context->Eplus[0];
Eplus[1] = oh->context->Eplus[1];
Eplus[2] = oh->context->Eplus[2];
}
}
void
newVEXOp(void *)
{
new VEX_VexOp("ocean_eval_ij@IIFFIF&VI&VI&F&F&V&VIFFFFFFFI",
ocean_eval_ij,
VEX_ALL_CONTEXT,
ocean_init,ocean_cleanup);
new VEX_VexOp("ocean_eval@FFFFIF&VI&VI&F&F&V&VIFFFFFFFI",
ocean_eval,
VEX_ALL_CONTEXT,
ocean_init,ocean_cleanup);
}