User:Smoth

SMOTH IS SMOTH!

Notes for SimpleParticleSystem:

• float3 pos
  Origon point for your particle system.


• AtlasedTexture texture
  Texture for the particles, defined in resources.tdf.


• float3 emitVector
  Use DIR to have it acquire a direction, this will utilize a poly on your object that you choose as an emitter.
  
  See my notes on vectors to understand how to use the vectors of this:
  i.e. 0,1,0 is straight up
  


• CColorMap colorMap
  This will give your system a range of colors spread over time.
  it has 4 parts:
  RED, GREEN, BLUE, ALPHA
  
  note:
  For additive blend use values that are low like: 0.1 or 0.05
  For overlay use 1.0
  see notes on overlay versus additive blend.
  


• float3 gravity
  Gravity applied along a vector.
  
  For example, if you want your particles to fall after being emmited.
  Emitvector would be: 0,1,0
  and gravity would need to be 0,-1,0
  This would result in particles falling straight down.


• float airdrag
  Constant multiplier on the particle each frame, a value of 1.0 means the particles will keep their current momentum, a value bellow 1 and they will slow down each frame.


• float particleLife
  Life of the particles in frames.


• float particleLifeSpread
  Random number between 0 and particleLifeSpread added to particleLife.


• int numParticles
  Number of particles that will be spawned.


• float particleSpeed
  Initial speed of the particles.


• float particleSpeedSpread
  Random number between 0 and particleSpeedSpread added to particleSpeed.


• float particleSize
  Size of the particles.


• float particleSizeSpread
  Random number between 0 and particleSizeSpread added to particleSize.


• float sizeGrowth
  Size added to particles each frame.


• float sizeMod
  Size frame multiplier.


• float emitRot
  Rotation in degree from emitVector that particles will be spawned from, a value of 90 will emmit particles in a plane perpendicular to the emitVector.


• float emitRotSpread
  Random number between 0 and emitRotSpread added to emitRot, a value of 180 will make the particles spawn in a full sphere.


• bool directional
  If the particles should be oriented to point at the direction of their velocity.

Notes vectors:

• Vectors are directional systems represented by a 3d graph here: WORK IN PROGRESS!

Notes Additive blend versus overlay blen:
• WORK IN PROGRESS!