Forum Discussion

jbrave's avatar
jbrave
Channel Surfer
14 years ago

Scaling Sprites

It seems a bitmap is a property of a region
a region is a property of a sprite
drawscaledbitmap is a property of a screen

What is the simplest method of scaling a sprites bitmap? I want to scale some sprites to a fixed pixel width and then move them using sprite.moveto(x,y), but I'm not sure how to do this. I have sprites on screen, they are moving as I want them to, but I want to shrink em & keep em shrunk.

Anyone?

- Joel
Roku Developer Program

2 Replies

  • TheEndless's avatar
    TheEndless
    Channel Surfer
    14 years ago
    roBitmap, roRegion, and roScreen all implement the ifDraw2D interface, so you can DrawScaledObject to any one of them. If you want to scale a sprite permanently, then I'd probably draw it to a bitmap scaled, then use that bitmap throughout the rest of the app. The scaleblit.brs file in the Simple2D sample shows and example of how to do this.
  • jbrave's avatar
    jbrave
    Channel Surfer
    14 years ago
    Thanks for the suggestion, I got it working, the biggest issue being that the scaling factors are percentages, not pixels, so 0.50 instead of 50.0

    - Joel