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Adjusting particle size and speed

From: Particle Effects in 3ds Max

Video: Adjusting particle size and speed

Each particle system in 3ds Max gives you the ability to control your particle size and speed. To show you where you can find the adjustments, I will be using a file named Particle Settings Size and Speed. Let's start with controlling just how fast or slow your particles travel. You'll find the setting under Particle Motion. That'll be in the Particle Generation category on the right-hand side of the screen. Now a particle speed is probably best defined as the initial speed at which a particle leaves its emitter, a higher number representing a faster velocity. Let's start the playback and we'll change a few things around.

Adjusting particle size and speed

Each particle system in 3ds Max gives you the ability to control your particle size and speed. To show you where you can find the adjustments, I will be using a file named Particle Settings Size and Speed. Let's start with controlling just how fast or slow your particles travel. You'll find the setting under Particle Motion. That'll be in the Particle Generation category on the right-hand side of the screen. Now a particle speed is probably best defined as the initial speed at which a particle leaves its emitter, a higher number representing a faster velocity. Let's start the playback and we'll change a few things around.

I can do that by simply tapping the forward slash in the keyboard. Now under Particle Motion let's change Speed to 2. Now you can see the difference that's made. Let's try 22. Now the particles are speeding away at a much faster pace. Let's go back to the original default value of 10. Now directly under Speed, you have Variation, which can be used to adjust or vary the initial speed of a particle. Higher values will ensure that each particle in your system isn't traveling at the exact same velocity. Let's start the play again and we'll change the Variation to 25.

Now, why don't we take the speed down to about 5? A little tough to see with this type of viewport display, but a little variation does indeed make things many times look a little more realistic. Now as far as controlling a particle size, staying in the Particle Generation category, we have a couple of different settings that we can adjust. The Size setting controls the overall size of each particle, with larger numbers producing better particles. Let's change that Size value to 5. Okay, with the larger size we can now take advantage of displaying our particles using their actual mesh.

To do that, we'll go back up to Viewport Display, changing the option to Mesh. Let's now return to the Particle Size category. Once we are there, let's change the Size of the particles from 5 to 10. Let's go ahead and play this back and we can see the difference there. Now, let's go back to the Speed and we'll just build the speed and the speed variation. Once we are there, I will begin playback. We'll change the Speed to 3, and the Variation to 50. Now, the Size settings also have controls called Grow For and Fade For.

Grow For controls the number of frames over which the particle will grow from very small to whatever size you set for the Particle Size value. Fade For on the other hand determines the number of frames over which any given particle will shrink down to 1/10th of its size prior to dying off. So particles can be setup to start small, then grow up to their setting size, or be programmed to gradually shrink in size before fading away, an effect that many times you will see when creating dust and smoke, where a dust cloud for an example will grow larger over time than gradually diminish in size before fading away altogether.

So that's your controls for adjusting both size and speed. Next, we'll take a look at controlling a particle's rotation.

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This video is part of

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Particle Effects in 3ds Max

80 video lessons · 6364 viewers

Steve Nelle
Author

 
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  1. 3m 28s
    1. Welcome
      1m 1s
    2. How to use this course
      1m 4s
    3. Using the exercise files
      1m 23s
  2. 34m 56s
    1. Understanding particle systems
      2m 23s
    2. Comparing event-driven and non-event-driven systems
      2m 58s
    3. Controlling particle timing and quantity
      4m 42s
    4. Adjusting particle size and speed
      2m 55s
    5. Making particles rotate
      2m 36s
    6. Exploring standard particle types
      2m 45s
    7. Using metaparticles for fluid-type effects
      5m 57s
    8. Using a scene object as a particle
      6m 23s
    9. Understanding rendering and viewport redrawing
      4m 17s
  3. 43m 55s
    1. Spray
      6m 4s
    2. Snow
      5m 16s
    3. Blizzard
      3m 25s
    4. PArray
      12m 43s
    5. PCloud
      7m 30s
    6. Super Spray
      8m 57s
  4. 28m 32s
    1. Understanding particle flow
      1m 58s
    2. Navigating the Particle view
      5m 47s
    3. Working with operators
      3m 43s
    4. Adding a test to an event
      4m 11s
    5. Wiring events to change a particle's behavior
      6m 13s
    6. Adjusting particle flow settings
      6m 40s
  5. 40m 34s
    1. Understanding material
      4m 50s
    2. Setting map options and particle edge blending
      5m 53s
    3. Changing particle appearance with age maps
      10m 52s
    4. Blurring moving particles with the MBlur map
      6m 13s
    5. Blurring particles
      8m 16s
    6. Outputting a render for compositing
      4m 30s
  6. 58m 59s
    1. Understanding space warps
      2m 59s
    2. Using Bind to Space Warp
      5m 43s
    3. Adding Gravity to an effect
      4m 47s
    4. Adding Wind to an effect
      4m 24s
    5. Rotating particles with Motor space warp
      4m 43s
    6. Creating swirling effects with Vortex space warp
      3m 45s
    7. Blowing things up with Bomb space warp
      4m 15s
    8. Blowing things up with PBomb space warp
      4m 42s
    9. Making particles follow a path
      4m 3s
    10. Creating wave effects
      4m 0s
    11. Creating ripples
      3m 53s
    12. Deflecting particles off surfaces
      8m 4s
    13. Spawning particles
      3m 41s
  7. 15m 38s
    1. Creating a Super Spray particle system for the smoke
      2m 52s
    2. Adding wind
      3m 9s
    3. Dampening the particle movement
      3m 25s
    4. Adjusting the wind settings for realistic smoke movement
      2m 56s
    5. Creating more realistic-looking smoke
      3m 16s
  8. 22m 7s
    1. Creating the geometry and camera
      4m 39s
    2. Adding the background
      3m 52s
    3. Creating water movement
      6m 7s
    4. Creating the animated material for the water
      7m 29s
  9. 25m 38s
    1. Creating Super Spray water particles
      9m 26s
    2. Adding gravity
      2m 24s
    3. Creating the fountain water material
      5m 30s
    4. Constructing the particle water material
      3m 1s
    5. Making final adjustments
      5m 17s
  10. 24m 43s
    1. Creating the geometry
      3m 41s
    2. Adding the mudslide particle system
      5m 46s
    3. Binding a Gravity space warp to the particles
      2m 41s
    4. Adding the Deflector space warp
      4m 7s
    5. Creating the materials for the scene
      3m 3s
    6. Making final adjustments
      5m 25s
  11. 21m 52s
    1. Scoping out the project
      59s
    2. Creating the explosive devices
      3m 11s
    3. Adjusting the explosion settings
      4m 3s
    4. Setting up the shack's visibility track
      3m 22s
    5. Creating the fire effect
      3m 27s
    6. Adding a bright explosion glow and wrapping things up
      6m 50s
  12. 32m 4s
    1. Scoping out the project
      1m 6s
    2. Creating and positioning the particle flow system
      2m 9s
    3. Reviewing the PFlow events
      2m 26s
    4. Building the water drop geometry
      2m 37s
    5. Creating the water drop material
      4m 6s
    6. Adjusting the PFlow settings
      4m 38s
    7. Adding the Collision Spawn Test and deflector
      4m 18s
    8. Turning the drops into steam
      2m 46s
    9. Creating the steam material
      3m 49s
    10. Making the final adjustments
      4m 9s
  13. 47s
    1. Goodbye
      47s

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