95a2f54683
git-svn-id: https://svn.code.sf.net/p/apophysis7x/svn/trunk@1 a5d1c0f9-a0e9-45c6-87dd-9d276e40c949
64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
/*
|
|
Apophysis Plugin
|
|
|
|
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., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
// Must define this structure before we include apoplugin.h
|
|
typedef struct
|
|
{
|
|
int juliaq_power, juliaq_divisor;
|
|
|
|
double half_inv_power;
|
|
double inv_power, inv_power_2pi;
|
|
} Variables;
|
|
|
|
#define _USE_MATH_DEFINES
|
|
#include "apoplugin.h"
|
|
|
|
// Set the name of this plugin
|
|
APO_PLUGIN("juliaq");
|
|
|
|
|
|
// Define the Variables
|
|
APO_VARIABLES(
|
|
VAR_INTEGER_NONZERO(juliaq_power, 3),
|
|
VAR_INTEGER_NONZERO(juliaq_divisor, 2),
|
|
);
|
|
|
|
// You must call the argument "vp".
|
|
int PluginVarPrepare(Variation* vp)
|
|
{
|
|
VAR(half_inv_power) = 0.5 * VAR(juliaq_divisor) / (double)VAR(juliaq_power);
|
|
|
|
VAR(inv_power) = VAR(juliaq_divisor) / (double)VAR(juliaq_power);
|
|
VAR(inv_power_2pi) = M_2PI / (double)VAR(juliaq_power);
|
|
|
|
return TRUE; // Always return TRUE.
|
|
}
|
|
|
|
// You must call the argument "vp".
|
|
int PluginVarCalc(Variation* vp)
|
|
{
|
|
double sina, cosa;
|
|
fsincos( atan2(FTy, FTx)*VAR(inv_power) + rand()*VAR(inv_power_2pi),
|
|
&sina, &cosa);
|
|
double r = VVAR * pow(sqr(FTx) + sqr(FTy), VAR(half_inv_power));
|
|
FPx += r * cosa;
|
|
FPy += r * sina;
|
|
|
|
return TRUE;
|
|
}
|