Pixel Flow Custom Variations

Description

By Bezo97

Translated to JWildfire by Brad Stefanov

Variables:
-angle: direction of the flowing effect in degrees
-len: how far the pixels flow
-width: size of pixels ( smaller width->larger pixels !)
-enable_dc: option to turn off DirectColors

/*
  JWildfire - an image and animation processor written in Java 
  Copyright (C) 1995-2011 Andreas Maschke
  This is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser 
  General Public License as published by the Free Software Foundation; either version 2.1 of the 
  License, or (at your option) any later version.
 
  This software 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 
  Lesser General Public License for more details.
  You should have received a copy of the GNU Lesser General Public License along with this software; 
  if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jwildfire.create.tina.variation;

import org.jwildfire.create.tina.base.XForm;
import org.jwildfire.create.tina.base.XYZPoint;
import org.jwildfire.create.tina.variation.FlameTransformationContext;
import static org.jwildfire.base.mathlib.MathLib.*;
import org.jwildfire.base.Tools;

public class PixelFlowFunc extends VariationFunc {
    private static final long serialVersionUID = 1L;

    private static final String PARAM_ANGLE = angle;
    private static final String PARAM_LEN = len;
    private static final String PARAM_WIDTH = width;
    private static final String PARAM_SEED = seed;
    private static final String PARAM_ENABLE_DC = enable_dc;
    

    private static final String[] paramNames = { PARAM_ANGLE, PARAM_LEN, PARAM_WIDTH, PARAM_SEED, PARAM_ENABLE_DC };
    private double angle = 90.0;
    private double len = 0.1;
    private double width = 200.0;
    private int seed = 42;
    private int enable_dc = 0;

    private double hash(int a) { // http://burtleburtle.net/bob/hash/integer.html
        a = (a ^ 61) ^ (a >> 16);
        a = a + (a << 3);
        a = a ^ (a >> 4);
        a = a * 0x27d4eb2d;
        a = a ^ (a >> 15);
        return (double) a / (double) Integer.MAX_VALUE;
    }

    @Override
    public void transform(FlameTransformationContext pContext, XForm pXForm, XYZPoint pAffineTP, XYZPoint pVarTP,
            double pAmount) {
        /*
         * pixel_flow by bezo97,
         * https://bezo97.tk/plugins.html
         */
        double a_rad = angle * 0.0174532925;// deg to rad, *pi/180
        double sina = sin(a_rad);
        double cosa = cos(a_rad);
        int blockx = (int) floor(pAffineTP.x * width);
        blockx += (2.0 - 4.0 * hash(blockx * seed + 1));// varying width and length
        int blocky = (int) floor(pAffineTP.y * width);
        blocky += (2.0 - 4.0 * hash(blocky * seed + 1));
        double fLen = (hash(blocky + blockx * -seed) + hash(blockx + blocky * seed / 2)) * 0.5;// Doesn't matter just
                                                                                                // needs to be random
                                                                                                // enough
        double r01 = pContext.random();
        double fade = fLen * r01 * r01 * r01 * r01;// fading effect
        pVarTP.x += pAmount * len * cosa * fade;
        pVarTP.y += pAmount * len * sina * fade;

        if (enable_dc == 1)
            pVarTP.color = r01;// direct color
        if (pContext.isPreserveZCoordinate()) {
            pVarTP.z += pAmount * pAffineTP.z;
        }
    }

    @Override
    public String[] getParameterNames() {
        return paramNames;
    }

    @Override
    public Object[] getParameterValues() {
        return new Object[] { angle, len, width, seed, enable_dc };
    }

    @Override
    public String[] getParameterAlternativeNames() {
        return new String[] { angle, len, width, seed, enable_dc };
    }

    @Override
    public void setParameter(String pName, double pValue) {
        if (PARAM_ANGLE.equalsIgnoreCase(pName)) {
            angle = pValue;
        } else if (PARAM_LEN.equalsIgnoreCase(pName)) {
            len = pValue;
        } else if (PARAM_WIDTH.equalsIgnoreCase(pName)) {
            width = pValue;
        } else if (PARAM_SEED.equalsIgnoreCase(pName)) {
            seed = Tools.FTOI(pValue);
        } else if (PARAM_ENABLE_DC.equalsIgnoreCase(pName)) {
            enable_dc = (int) limitVal(pValue, 0, 1);

        } else
            throw new IllegalArgumentException(pName);
    }

    @Override
    public String getName() {
        return pixel_flow;
    }

}

 

Download Summary

Sample image(s)

Pixel Flow Custom Variations Image
Please credit and or link to this resource if you use them to create your images. For more information please read this
[bg_collapse view="button-blue" color="#f7f7f7" icon="eye" expand_text="Custom Variation Instructions" collapse_text="Hide Instructions" ]You'll need to either add a custom_wf or load the java file please see how to sdd custom variations.

[/bg_collapse]

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