package com.jme3.scene.plugins.blender.particles;
import com.jme3.effect.ParticleEmitter;
import com.jme3.effect.ParticleMesh.Type;
import com.jme3.effect.influencers.EmptyParticleInfluencer;
import com.jme3.effect.influencers.NewtonianParticleInfluencer;
import com.jme3.effect.influencers.ParticleInfluencer;
import com.jme3.effect.shapes.EmitterMeshConvexHullShape;
import com.jme3.effect.shapes.EmitterMeshFaceShape;
import com.jme3.effect.shapes.EmitterMeshVertexShape;
import com.jme3.math.ColorRGBA;
import com.jme3.scene.plugins.blender.AbstractBlenderHelper;
import com.jme3.scene.plugins.blender.BlenderContext;
import com.jme3.scene.plugins.blender.file.BlenderFileException;
import com.jme3.scene.plugins.blender.file.DynamicArray;
import com.jme3.scene.plugins.blender.file.Pointer;
import com.jme3.scene.plugins.blender.file.Structure;
import java.util.logging.Logger;
public class ParticlesHelper extends AbstractBlenderHelper {
private static final Logger LOGGER = Logger.getLogger(ParticlesHelper.class.getName());
// part->type
public static final int PART_EMITTER = 0;
public static final int PART_REACTOR = 1;
public static final int PART_HAIR = 2;
public static final int PART_FLUID = 3;
// part->flag
public static final int PART_REACT_STA_END = 1;
public static final int PART_REACT_MULTIPLE = 2;
public static final int PART_LOOP = 4;
// public static final int PART_LOOP_INSTANT =8;
public static final int PART_HAIR_GEOMETRY = 16;
public static final int PART_UNBORN = 32; // show unborn particles
public static final int PART_DIED = 64; // show died particles
public static final int PART_TRAND = 128;
public static final int PART_EDISTR = 256; // particle/face from face areas
public static final int PART_STICKY = 512; // collided particles can stick to collider
public static final int PART_DIE_ON_COL = 1 << 12;
public static final int PART_SIZE_DEFL = 1 << 13; // swept sphere deflections
public static final int PART_ROT_DYN = 1 << 14; // dynamic rotation
public static final int PART_SIZEMASS = 1 << 16;
public static final int PART_ABS_LENGTH = 1 << 15;
public static final int PART_ABS_TIME = 1 << 17;
public static final int PART_GLOB_TIME = 1 << 18;
public static final int PART_BOIDS_2D = 1 << 19;
public static final int PART_BRANCHING = 1 << 20;
public static final int PART_ANIM_BRANCHING = 1 << 21;
public static final int PART_SELF_EFFECT = 1 << 22;
public static final int PART_SYMM_BRANCHING = 1 << 24;
public static final int PART_HAIR_BSPLINE = 1024;
public static final int PART_GRID_INVERT = 1 << 26;
public static final int PART_CHILD_EFFECT = 1 << 27;
public static final int PART_CHILD_SEAMS = 1 << 28;
public static final int PART_CHILD_RENDER = 1 << 29;
public static final int PART_CHILD_GUIDE = 1 << 30;
// part->from
public static final int PART_FROM_VERT = 0;
public static final int PART_FROM_FACE = 1;
public static final int PART_FROM_VOLUME = 2;
public static final int PART_FROM_PARTICLE = 3;
public static final int PART_FROM_CHILD = 4;
// part->phystype
public static final int PART_PHYS_NO = 0;
public static final int PART_PHYS_NEWTON = 1;
public static final int PART_PHYS_KEYED = 2;
public static final int PART_PHYS_BOIDS = 3;
// part->draw_as
public static final int PART_DRAW_NOT = 0;
public static final int PART_DRAW_DOT = 1;
public static final int PART_DRAW_CIRC = 2;
public static final int PART_DRAW_CROSS = 3;
public static final int PART_DRAW_AXIS = 4;
public static final int PART_DRAW_LINE = 5;
public static final int PART_DRAW_PATH = 6;
public static final int PART_DRAW_OB = 7;
public static final int PART_DRAW_GR = 8;
public static final int PART_DRAW_BB = 9;
/**
* This constructor parses the given blender version and stores the result. Some functionalities may differ in
* different blender versions.
* @param blenderVersion
* the version read from the blend file
* @param blenderContext
* the blender context
*/
public ParticlesHelper(String blenderVersion, BlenderContext blenderContext) {
super(blenderVersion, blenderContext);
}
@SuppressWarnings("unchecked")
public ParticleEmitter toParticleEmitter(Structure particleSystem) throws BlenderFileException {
ParticleEmitter result = null;
Pointer pParticleSettings = (Pointer) particleSystem.getFieldValue("part");
if (pParticleSettings.isNotNull()) {
Structure particleSettings = pParticleSettings.fetchData().get(0);
int totPart = ((Number) particleSettings.getFieldValue("totpart")).intValue();
// draw type will be stored temporarily in the name (it is used during modifier applying operation)
int drawAs = ((Number) particleSettings.getFieldValue("draw_as")).intValue();
char nameSuffix;// P - point, L - line, N - None, B - Bilboard
switch (drawAs) {
case PART_DRAW_NOT:
nameSuffix = 'N';
totPart = 0;// no need to generate particles in this case
break;
case PART_DRAW_BB:
nameSuffix = 'B';
break;
case PART_DRAW_OB:
case PART_DRAW_GR:
nameSuffix = 'P';
LOGGER.warning("Neither object nor group particles supported yet! Using point representation instead!");// TODO: support groups and aobjects
break;
case PART_DRAW_LINE:
nameSuffix = 'L';
LOGGER.warning("Lines not yet supported! Using point representation instead!");// TODO: support lines
default:// all others are rendered as points in blender
nameSuffix = 'P';
}
result = new ParticleEmitter(particleSettings.getName() + nameSuffix, Type.Triangle, totPart);
if (nameSuffix == 'N') {
return result;// no need to set anything else
}
// setting the emitters shape (the shapes meshes will be set later during modifier applying operation)
int from = ((Number) particleSettings.getFieldValue("from")).intValue();
switch (from) {
case PART_FROM_VERT:
result.setShape(new EmitterMeshVertexShape());
break;
case PART_FROM_FACE:
result.setShape(new EmitterMeshFaceShape());
break;
case PART_FROM_VOLUME:
result.setShape(new EmitterMeshConvexHullShape());
break;
default:
LOGGER.warning("Default shape used! Unknown emitter shape value ('from' parameter: " + from + ')');
}
// reading acceleration
DynamicArray<Number> acc = (DynamicArray<Number>) particleSettings.getFieldValue("acc");
result.setGravity(-acc.get(0).floatValue(), -acc.get(1).floatValue(), -acc.get(2).floatValue());
// setting the colors
result.setEndColor(new ColorRGBA(1f, 1f, 1f, 1f));
result.setStartColor(new ColorRGBA(1f, 1f, 1f, 1f));
// reading size
float sizeFactor = nameSuffix == 'B' ? 1.0f : 0.3f;
float size = ((Number) particleSettings.getFieldValue("size")).floatValue() * sizeFactor;
result.setStartSize(size);
result.setEndSize(size);
// reading lifetime
int fps = blenderContext.getBlenderKey().getFps();
float lifetime = ((Number) particleSettings.getFieldValue("lifetime")).floatValue() / fps;
float randlife = ((Number) particleSettings.getFieldValue("randlife")).floatValue() / fps;
result.setLowLife(lifetime * (1.0f - randlife));
result.setHighLife(lifetime);
// preparing influencer
ParticleInfluencer influencer;
int phystype = ((Number) particleSettings.getFieldValue("phystype")).intValue();
switch (phystype) {
case PART_PHYS_NEWTON:
influencer = new NewtonianParticleInfluencer();
((NewtonianParticleInfluencer) influencer).setNormalVelocity(((Number) particleSettings.getFieldValue("normfac")).floatValue());
((NewtonianParticleInfluencer) influencer).setVelocityVariation(((Number) particleSettings.getFieldValue("randfac")).floatValue());
((NewtonianParticleInfluencer) influencer).setSurfaceTangentFactor(((Number) particleSettings.getFieldValue("tanfac")).floatValue());
((NewtonianParticleInfluencer) influencer).setSurfaceTangentRotation(((Number) particleSettings.getFieldValue("tanphase")).floatValue());
break;
case PART_PHYS_BOIDS:
case PART_PHYS_KEYED:// TODO: support other influencers
LOGGER.warning("Boids and Keyed particles physic not yet supported! Empty influencer used!");
case PART_PHYS_NO:
default:
influencer = new EmptyParticleInfluencer();
}
result.setParticleInfluencer(influencer);
}
return result;
}
}