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- lovetocode999
- Scratcher
20 posts
Geometric Transformations With Sprites
This project uses the available blocks in Scratch and combines them with math to apply
3 different geometrical transformations to the sprites using the scripts below.
Here are some examples of how this can be used:
Orbiter Example
Mouse Orbiter Example
Sprite Warp Example
Sprite Warp 2 Example
3 different geometrical transformations to the sprites using the scripts below.
define Translation by \{ (x) (y) \}
change x by (x)
change y by (y)
define Rotation about \{ (x) (y) \} by \{ (degress) °\}
set [x v] to (x position)
set [y v] to (y position)
Point towards (x) (y) :: custom
set [i v] to ([sqrt v] of ((((x position) - (x)) * ((x position) - (x))) + (((y position) - (y)) * ((y position) - (y)))))
go to x: (x) y: (y)
Point towards (x) (y) :: custom
turn ccw (degress) degrees
move (i) steps
define Dilation of scale \{ (scale) \} about \{ (x) (y) \}
set size to ((size) * (scale)) %
set [x v] to (x position)
set [y v] to (y position)
set [i v] to ([sqrt v] of ((((x position) - (x)) * ((x position) - (x))) + (((y position) - (y)) * ((y position) - (y)))))
go to x: (x) y: (y)
Point towards (x) (y) :: custom
set [i v] to ((i) * (scale))
move (i) steps
point in direction (90 v)
Here are some examples of how this can be used:
Orbiter Example
Mouse Orbiter Example
Sprite Warp Example
Sprite Warp 2 Example
Last edited by lovetocode999 (June 23, 2017 20:12:15)
when <(x position)=(y position)> :: events :: hat // MuHaHaHaHA!!! I am the nonexistent block monster!!!Click Me
say [I didn't know that block existed!] until <(x position :: control)<(y position :: control)> :: motion
retort [We don't exactly exixt either :|] for [5] min. and if <these blocks exist :: operators > {
say[Help! I'm with a bunch of nonexistent blocks and I'm being eaten!]
}:: control
- lovetocode999
- Scratcher
20 posts
Geometric Transformations With Sprites
Bump!
when <(x position)=(y position)> :: events :: hat // MuHaHaHaHA!!! I am the nonexistent block monster!!!Click Me
say [I didn't know that block existed!] until <(x position :: control)<(y position :: control)> :: motion
retort [We don't exactly exixt either :|] for [5] min. and if <these blocks exist :: operators > {
say[Help! I'm with a bunch of nonexistent blocks and I'm being eaten!]
}:: control
- lovetocode999
- Scratcher
20 posts
Geometric Transformations With Sprites
Bump!
when <(x position)=(y position)> :: events :: hat // MuHaHaHaHA!!! I am the nonexistent block monster!!!Click Me
say [I didn't know that block existed!] until <(x position :: control)<(y position :: control)> :: motion
retort [We don't exactly exixt either :|] for [5] min. and if <these blocks exist :: operators > {
say[Help! I'm with a bunch of nonexistent blocks and I'm being eaten!]
}:: control
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