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Questions tagged [particles]

The tag has no usage guidance.

2
votes
0answers
79 views

How to model braids?

Many hair simulations render their hair as lines (usually splines). Since hair is a really thin object. if the hair is braided, rather than having thin infinitesimally small cylinders, you have ...
1
vote
1answer
47 views

Spring damping in Energy Function

Supposing a behavior function $C(x_1, \ldots, x_n)$, then we have a scalar potential energy function $E = \frac{k_s}{2}C\cdot C$ where $k_S$ is stiffness constant. Hence, the force is as follows $...
5
votes
1answer
235 views

Fading particles and transition

I'm trying to render a particle simulation. I want each particle to leave a trace. To achieve this I'm using a framebuffer and two textures. On each frame the algorithm goes like this: Render to a ...
2
votes
0answers
110 views

Cloud rendering and transparency order

I am working on a graphics engine designed to be used in flight simulators. It therefore has to feature an advanced weather rendering system with clouds you can fly through. For this, I implemented a ...
6
votes
2answers
217 views

Are there tricks for getting proper sort ordering on particle systems?

If you have a bunch of particles to render, using different shaders and/or render states, that have some level of transparency, the naive solution of sorting all particles by depth can be extremely ...
3
votes
1answer
110 views

Possible methods to deal with artifacts when drawing billboards to a cubemap

When drawing billboards to a cubemap, the billboard texture was incorrectly aligned on the boundaries of the cubemap between different sides. My guess is that the false projection of the billboard ...
6
votes
2answers
912 views

Pixel dispersion (dissolving) algorithms

This YouTube video of a flip-dot display (physical b/w pixels) shows the reverse of an effect that might be called dissolve or dispersion, i.e. a text emerges from noise by pixels moving in to form ...
1
vote
1answer
247 views

Particle & Fluid Simulation: Where to learn? [closed]

Where can I learn about particle and fluid simulation? Is there a good book available? I want to couple volume rendering with fluid/particle simulation to be able to finally render smoke and ocean ...
7
votes
1answer
116 views

Please help me understand what happens as an image is faded to black in order to time-step particle fading

I have a game that has simple particles (basically dots) moving around the screen leaving a trail. My ultimate goal is to be able to change the opacity of the solid black fading texture each drawing ...
7
votes
2answers
123 views

Overlaying graphics on particle simulation

How can I overlay graphics on particle simulations? For instance if I am representing a liquid or gas with tons of little points how can I make those points look like a liquid or gas? Take Nvidia Flex ...