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Questions tagged [particles]

Particle in computer graphics usually refers to the small, simple images or 3D models (meshes) that are governed by and make up a particle system, usually used to depict a fuzzy object (e.g. fire, smoke, glowing trail left behind by a meteor).

Particle (in computer graphics)

Particles are small units that together represent a fuzzy object in a particle system. Over time the system generates particles, which move and change from the origin of creation (or emission) and eventually die or fade away. Link to academic paper

Particle can have a different meaning depending on if the field is computer graphics, nanotechnology, or physical sciences

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Have my particles let trail of there movement on the scene in SpriteKit even in a child node

I want the same effect than in this project But my particles SKEmitterNode isn't directly in the Scene, but in a child node. My particles are reactor effect behind my spaceship, and I want it to leave a trail on the scene as the SpaceShip node…
Tancrede Chazallet
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How can I know the time to completion of a ParticleEffect

Is there a way to get the time until completion of a ParticleEffect in libgdx? For example, say I want something to happen one second before the ParticleEffect completes: private void foo(){ ParticleEffect bombEffect = new ParticleEffect(); …
asherbret
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JS Canvas animate grid elements individually

I'm generating a grid of hexagons by using a for loop and I'm having some issues for (var i=0; i <= rows; i++) { for (var j=0; j <= cols; j++) { ctx.save(); ctx.translate(0+i*distX, 0+j*distY); …
Darrell
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Filling shape with particles canvas

Just wondering if anyone could point me in a good direction to a way I could fill an irregular shape with particles, in rows, which would then be animatable. This is the closest example i can find -…
pwlarry
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UIKit dynamics to interact with particles

Is there anyway for particles created in UIKit to interact with each other? I was thinking it doesn't have to be shown on screen with UIKit dynamics, but it can just be position with "collision" detection so it can have effects when it enters the…
Felix J
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uniform generation of points on 3D box

I would like to generate random points on a 3D box defined by its (minx, miny, minz) and (maxx, maxy, maxz) corners. I was thinking of generating a random point inside of the box and then somehow projecting it onto one of the box sides. However, I…
Myx
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Stop particle effect libgdx

I have a game that involves lots of collisions and explosions. Basically, enemy-projectiles are launched from the bottom-right corner of the screen towards the left side. The player can intercept them using his weapon. I want whenever a "bullet"…
David Lasry
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Particle effect with libgdx - box2d

I'm developing a game which basically involves a lot of collisions and explosions. Now, whenever I have a collision between two bodies, I want to draw a particle effect like an explosion at the collision position, but I'm not sure how do I do that.…
David Lasry
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How to create Particles structure from text in AS3?

I want to take any Text sting and form from it text formed by particles in actionscript 3 (In flash \ flex) I see I need some lib for this. but all libs Ive seen do not have such functionalyty by default... So I want to get something like…
Rella
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Create 3D streamtube (or streamline) from particle trajectory data

I have a set of particle trajectories in a 3D space and I want to represent them using 3D streamlines. I can easily get the trajectory using plot3, and I can represent the velocity vector using quiver3. As an example, one can consider the following…
Juan Sebastian Totero
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iPhone. Particle system performance

I try to draw rain and snow as particle system using Core Graphics. In simulator rendering proceeded fine but when I run my app on real device rendering is slow down. So, advise me please approaches to increase particle system drawing performance on…
e40pud
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Animating stream particles in MATLAB

I've been playing with animating flows in MATLAB recently. Though I managed to get the following working fine, I was wondering if there was a way to constantly seed new particles from the starting locations, i.e. When a particle leaves the view, a…
Laurengineer
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Instancing data management

I'm trying to draw a few thousand particles using instancing. It's working and it's fast, but I have one bottleneck that slows the whole program down. My Particle class is similar to this: public class Particle { public Vector2 Position; …
Teflo
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can't draw any other objects before or after drawing particles

I am working on a game, and trying to implement the instancized CPU-Particle System programmed on http://www.opengl-tutorial.org/intermediate-tutorials/billboards-particles/particles-instancing/ i managed to get it working in my code structure, but…
user3561689
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What are the Output Variables from 'Analyze Particle'?

I need to use a specific value output by Analyze Particle in another part of my script. The value I need is "Total Area", but I have no idea how to refer to it! Do any of you know what variable name the "Total Area" value is stored under? If it's…
user3571394
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