Pixel particles

7 Comments

• 
  C January 12, 2012 at 14:22

  Amazing performance. Great work.

  Reply
• 
  darije January 12, 2012 at 18:20

  Absolutely fantastic!

  Reply
• 
  youp January 13, 2012 at 22:19

  smooth without hardware acceleration, but it take a lot of memory.

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  • 
    Klas January 16, 2012 at 08:04

    Regarding the memory useage, the heightmap tests uses png-sequences for the heigtmaps so that eats some memory in those cases.

    Reply
• 
  esimov January 28, 2012 at 22:12

  I’ve done something similar here: http://wonderfl.net/c/3G3j, with linked list too, tough with less efficiency. Any tips how You implemented the transition?

  Reply
• 
  RiaanWest September 5, 2012 at 14:21

  Very impressed with your work, especially the morph animations. I’m working on a kinect particle data driven app, and I had similar transitions in mind. Any chance you can give me some tips?

  Reply
  • 
    Klas September 7, 2012 at 18:50

    Thanks!

    It´s pretty straight forward, but there are some variations you can play around with.

    Let´s say you have two shapes, shape0 and shape1, just a bunch of xyz coordinates.
    So if we have x of one point, like:
    x0 = 1000
    x1 = 2000

    Then you have a morphValue = 0, 0 means x0 and 1 means x1, so you can morph between the positions with something like: newx = x0 – (x0 – x1)*morphValue
    So then you can tween the morphValue between 0 and 1 to morph between the shapes.
    I made an array of morphValues and had like 300 morphValues and each point had an index of which morphValue to use. That way you can can tween all morphValues with a bit of delay in between them, so you get a more “fluid” morph.

    I also played around with presorting the points and sort them on the y-value from top to bottom for example, that way the morph would happen more like a “wave”.

    Hope that made some sense and helps a bit!

    Reply