Two particles attached by a weak spring, both with high gravitational attraction. There is a plane in the middle which both bounce off elastically, and they exhibit an interesting periodic motion.

It's a cloth falling on a sphere!

It's a dancing mushroom!

Party!

Took my castle from last time and added particles! One circle source in the middle with four sphere sinks (one on each side).

An ico pendulum that is attracted to a sink. By the end, equilibrium should be reached where the pendulum is not hanging exactly straight down but slightly tilted towards the sink.

This is just an extension to the climbing scene with a sphere sink. I just added a few more particles to the scene to see how they'd behave.

This scene has a particle source near the bottom that produces green particles of mass 1. The 12 red particles all have mass 1e11 and accelerate the created particles through their middle. I thought this scene was interesting because it shows conservation of energy in our particle simulation. As can be seen, there are more particles away from the red particles at any given time. This is because the particles there are moving slower. They have more "gravitational energy" and less "kinetic energy" compared to the particles moving through the center of the red particles. The created particles will usually group on the other side of the red particles opposite from the particle source because reaching that point requires the same "gravitational energy" that the particles had when they were created.

This .gif was created by using a source sink hidden in a UFO textured sphere to capture a cow mesh. Since I couldn't make a cow particle cloud I hid a line particle source behind the cow to create the stream of particles going into the UFO.

Trails and dynamic materials, made with the #DYNAMIC_MATERIALS and #DRAW_TRAILS macros.

I made this scene to test collisions, particle rendering, and camera views. The source is inside the largest magenta sphere, but I didn't count the intersection with the inside as a collision.

Particle view

I used the grid of particles from the cloth, and assigned them each new colors, and had them bounce above a black box. The disappearing particles is a result of the colors being scaled by their current velocity.

Particles trapped in a box and moving in one plane in 3D. Added spherical obstacles on the ground to make a rough ground and bounces more interesting.

Tried to create a pyramid-style staircase. Definitely some peculiarities here.

I think it's kind of fun, right?

Particle rendering

AMERICAN CHEETAH SUPER HERO

The particles bouncing off the ico make some cool patterns while they orbit the sinks.

All the stress of coding over the past week has finally gotten to my head, and I've reverted into my fifth-grade self. The toilet bowl was made with a surface of revolution from assignment two, and the faces were turned inside-out using awk to get the normals facing inwards. The brown object is a dodecahedron made of springs, with the springs also colored brown. All the particles are originating from hidden circular sources with a zero-degree cutoff angle.

Modification of cloth.scn to make it fall over various spheres and crumple on the ground.

Ohad breathing fire and shooting lasers out of his eyes at a poor horsey. Fortunately the horse is invincible. This scene takes advantage of the lack of scene transformations. Ohad is transformed so it doesn't think it needs to check him for collisions.

Combination of attractive and repulsive sinks.

Instability in the falling mushroom scene.

Cool orbit patterns with sinks.

Sphere source in background and spring-cube caught up the particle forces.

My sad life.

I altered particle view so that moving the camera adjusts the direction of gravity. The user then has control over scenes by observing them, or "moving them around." So I made a game where particles exist, or spawn in a scene, and the user has to roll them toward sinks. Once all the particles are gone, you win!

This level shows the basic idea - you're looking down on a scene, and gravity is always pulling away from you. You adjust the platform to move particles, or marbles around and when all of the particles have reached the red sink, you win!

This level asks the player to get 1 particle into a particle sink. very basic

This level asks the player to get 4 particles into a particle sink. very basic

This level asks the player to get 5 particles into a particle sink - each with a different drag coefficient.

Jumping over bumps - there is a glass top on this level, so the particles which would escape stay in the scene and just bounce around. I've since removed this top from the level and it is basically impossible.

In this level, you need to bounce the particle off the bottom platform and into the sink. This gif shows three attemps

My scene has two layers of spheres, which move the particles around through collisions.

Red particles spilling onto a cylinder.