flip horizontally (X) a ParticleEffect [Libgdx]

Question

I got a particle effect thats is inside a group

 shellParticle = new ParticleEffect();
    shellParticle.load(Gdx.files.internal("shell13"),Gdx.files.internal(""));
    shellParticle.getEmitters().first().setPosition(0,0);
    shellParticle.scaleEffect(0.3f);

I need it to flip horizontally but it just jave the function flipY and setFlip(bool X, bool Y)

setFlip(true,false) just do nothing.

flipY() actually flips it vertically. Also I can't subtract its own width*2 because it dosen't have...

give the effect a negative scale? – Tenfour04 Aug 12 '16 at 02:46 — Tenfour04, Aug 12 '16 at 02:46
That will also filp it vertical – user5450074 Aug 12 '16 at 11:44 — user5450074, Aug 12 '16 at 11:44

score 1 · Answer 1 · answered Aug 12 '16 at 14:30

1

Set the negative scale to the particle

    shellParticle.scaleEffect(-1f);

then flip it vertically

    shellParticle.flipY();

answered Aug 12 '16 at 14:30

m.antkowicz

13,268
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37

that also will flip it on vertical – user5450074 Aug 15 '16 at 15:56

score 0 · Accepted Answer · answered Aug 15 '16 at 16:04

This seems to be a lack of infrmation from part of libgx api. The setFlip method is flipping the particle sprites (for particles which have already been emitted and future particles). flipY() modify propieties of emmiter setting everithing to negative but setting to negative just some of properties i get the flipX() method. Acctualy every change you wanna do with particules you shoud do it with emmiters properties exeptiong for the x and y position.

   private void flipX(){


    emmiter.getAngle().setHigh(emmiter.getAngle().getHighMin(),emmiter.getAngle().getHighMax());
    emmiter.getAngle().setLow(emmiter.getAngle().getLowMin(),emmiter.getAngle().getLowMax());

    emmiter.getGravity().setHigh(emmiter.getGravity().getHighMin(),emmiter.getGravity().getHighMax());
    emmiter.getGravity().setLow(emmiter.getGravity().getLowMin(),emmiter.getGravity().getLowMax());

    emmiter.getWind().setHigh(-emmiter.getWind().getHighMin(),-emmiter.getWind().getHighMax());
    emmiter.getWind().setLow(-emmiter.getWind().getLowMin(),-emmiter.getWind().getLowMax());

    emmiter.getRotation().setHigh(-emmiter.getRotation().getHighMin(),-emmiter.getRotation().getHighMax());
    emmiter.getRotation().setLow(-emmiter.getRotation().getLowMin(),-emmiter.getRotation().getLowMax());

    emmiter.getYOffsetValue().setLow(emmiter.getYOffsetValue().getLowMin(),emmiter.getYOffsetValue().getLowMax());

    emmiter.getXOffsetValue().setLow(emmiter.getXOffsetValue().getLowMin(),emmiter.getXOffsetValue().getLowMax());

}

I hope it helps someone.

flip horizontally (X) a ParticleEffect [Libgdx]

2 Answers2