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	~~{{expand\|article\|date=December 2017}}~~
	This tutorial explains how to make '''3-dimensional patterns''' in Scratch.		This tutorial explains how to make '''3-dimensional patterns''' in Scratch.

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{{expand|article|date=December 2017}}
This tutorial explains how to make '''3-dimensional patterns''' in Scratch.

== How Does 3D Work in Scratch? ==
[[Scratch]] is mostly intended for 2D projects, but it is possible to create a 3D effect with Scratch. This can be done by projecting a point that uses the dimensions x, y, and z to find its position. To do this, pen blocks and custom blocks have to be used.

== Making the Main Script ==
First of all, make some custom blocks as follows:
<scratchblocks>
define Reset
define Draw
</scratchblocks>

Afterwards, make this script,

<scratchblocks>
when green flag clicked
set pen (color v) to (pick random (1) to (100))
Reset :: custom
forever
erase all
Draw :: custom
change [delta v] by (1)
end
</scratchblocks>

The script above is the loop that will start everything up in the project.

=== Getting the Variables Ready ===

Next, get the variables ready. In the <sb>Reset :: custom</sb> custom block, make this script:
<scratchblocks>
define Reset
set [angle v] to [0]
set [A v] to [220]
set [B v] to [160]
set [r1 v] to (pick random (1) to (100))
set [r2 v] to (pick random (1) to (100))
set [delta v] to (pick random (1) to (90))
go to x: ((A) * ([sin v] of (((angle) * (r1)) + (delta)))) y: ((B) * ([cos v] of (((angle) * (r2)) + (delta)))
pen down
set pen size to (50)
</scratchblocks>

The Reset block will also make a pattern, so it will be useful.
{{note|For easier access, make the r1 and r2 variables sliders.}}

=== Creating the Draw Script ===
Next, make the code for the <sb>Draw :: custom</sb> custom block. This block will be more complicated.
<scratchblocks>
define Draw
show
erase all
pen down
repeat (360)
go to x: ((A) * ([sin v] of (((angle) * (r1)) + (delta)))) y: ((B) * ([cos v] of ((angle) * (r2))
set pen size to ([abs v] of ((((1000) - ((A) * ([sin v] of (((angle) * (r1)) + (delta))))) - ((B) * ([cos v] of ((angle) * (r2))))) / (150)))
set pen (brightness v) to ((-0.5) * (((A) * ([sin v] of (((angle) * (r1)) + (delta)))) - ((B) * ([cos v] of ((angle) * (r2))))
change [angle v] by (1)
move (10) steps
</scratchblocks>

== Example Project ==

* [[projects:187961151|3D Pattern Drawer]]

[[Category:Scripting Tutorials]]

3D Patterns - История изменений

Patarakin в 08:51, 1 июля 2025

Patarakin: 1 версия импортирована

scratch>TheTrillion: Bolded the first mention of the article name.