seventh.client.gfx.effects.particle_system.BlendingSpriteParticleRenderer.java Source code

Introduction

Here is the source code for seventh.client.gfx.effects.particle_system.BlendingSpriteParticleRenderer.java

Source

/*
 * see license.txt 
 */
package seventh.client.gfx.effects.particle_system;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.g2d.Sprite;

import seventh.client.gfx.Camera;
import seventh.client.gfx.Canvas;
import seventh.client.gfx.effects.particle_system.Emitter.ParticleRenderer;
import seventh.math.Vector2f;
import seventh.shared.TimeStep;

/**
 * @author Tony
 *
 */
public class BlendingSpriteParticleRenderer implements ParticleRenderer {

    /**
     * 
     */
    public BlendingSpriteParticleRenderer() {
    }

    /* (non-Javadoc)
     * @see seventh.client.gfx.particle_system.Emitter.ParticleRenderer#update(seventh.shared.TimeStep, seventh.client.gfx.particle_system.ParticleData)
     */
    @Override
    public void update(TimeStep timeStep, ParticleData particles) {
    }

    /* (non-Javadoc)
     * @see seventh.client.gfx.particle_system.Emitter.ParticleRenderer#render(seventh.client.gfx.Canvas, seventh.client.gfx.Camera, float, seventh.client.gfx.particle_system.ParticleData)
     */
    @Override
    public void render(Canvas canvas, Camera camera, float alpha, ParticleData particles) {
        int src = canvas.getSrcBlendFunction();
        int dst = canvas.getDstBlendFunction();
        //canvas.setBlendFunction(GL20.GL_SRC_ALPHA, GL20.GL_FUNC_ADD);
        canvas.setBlendFunction(GL20.GL_SRC_ALPHA, GL20.GL_ONE);
        Gdx.gl20.glBlendEquation(GL20.GL_FUNC_ADD);

        Vector2f cameraPos = camera.getRenderPosition(alpha);
        for (int i = 0; i < particles.numberOfAliveParticles; i++) {
            Sprite sprite = particles.sprite[i];
            Vector2f pos = particles.pos[i];
            sprite.setPosition(pos.x - cameraPos.x, pos.y - cameraPos.y);
            sprite.setScale(particles.scale[i]);
            sprite.setColor(particles.color[i]);
            sprite.setRotation(particles.rotation[i]);
            canvas.drawRawSprite(sprite);
        }

        canvas.setBlendFunction(src, dst);
    }

}