Minecraft:Procedural animated texture generation/Compasses - Revision history

SyncBot: Sync: updated from Minecraft

2026-05-29T11:11:34Z

Sync: updated from Minecraft

← Older revision		Revision as of 11:11, 29 May 2026
Line 41:		Line 41:
	output.set_pixel(x, y, '#646464')		output.set_pixel(x, y, '#646464')
	</syntaxhighlight>		</syntaxhighlight>
	The generated compass sprite has 104 possible unique frames, while the pre-rendered compass has significantly less, ~~at only 32~~ frames.		The generated compass sprite has 104 possible unique frames, while the pre-rendered compass has significantly less - 32 frames are defined, but as some of these are identical, the actual effective number of unique frames is 28 and was further reduced to 27 after the [[Minecraft:Texture Update]].
	<gallery style="text-align:center">		<gallery style="text-align:center">
	Compass JE1.gif\|Procedurally generated		Compass JE1.gif\|Procedurally generated

SyncBot: Sync: updated from Minecraft

2026-05-28T11:08:55Z

Sync: updated from Minecraft

← Older revision		Revision as of 11:08, 28 May 2026
Line 41:		Line 41:
	output.set_pixel(x, y, '#646464')		output.set_pixel(x, y, '#646464')
	</syntaxhighlight>		</syntaxhighlight>
	The generated compass sprite has ~~102~~ possible unique frames, while the pre-rendered compass has significantly less, at only 32 frames.		The generated compass sprite has 104 possible unique frames, while the pre-rendered compass has significantly less, at only 32 frames.
	<gallery style="text-align:center">		<gallery style="text-align:center">
	Compass JE1.gif\|Procedurally generated		Compass JE1.gif\|Procedurally generated

SyncBot: Sync: new page from Minecraft

2026-04-18T11:14:54Z

Sync: new page from Minecraft

New page

<includeonly>{{exclusive|java|console|section=1}}</includeonly>
<noinclude>{{outdated|Procedurally generated textures such as this one were removed and replaced by pre-rendered animations in [[Minecraft:Java Edition 1.5]] and [[Minecraft:Xbox 360 Edition TU12]].}}</noinclude>

Compasses simply draw two lines over the item sprite to form the needle.

Much like clocks, the code responsible for moving the needle is also present with the "setup" code, however it is omitted here as it is not pertinent to the actual drawing of the sprite. Also like clocks, an oversight in how the compass sprite is set to be loaded prevents texture packs from overriding the compass's base sprite.
<gallery style="text-align:center">
Compass (texture) JE1 BE1.png|The base sprite for the compass
</gallery>
<syntaxhighlight lang="python3" line="1">
def setup_compass_sprite (item: Image, angle: float, output: Image):
NX = 8.5
NY = 7.5
SCALE_X = 0.3
SCALE_Y = SCALE_X * 0.5

# copy the item's texture into the output
for i, pix in enumerate(item):
output.set_pixeli(i, pix)

rx = sin(angle)
ry = cos(angle)

# draw the smaller horizontal spurs of the needle
# 1 is added to the endpoint, as `range` here is
# end-exclusive. The original loops did `i <= 4`
for i in range(-4, 4 + 1):
x = int(NX + ry * i * SCALE_X)
y = int(NY - rx * i * SCALE_Y)
output.set_pixel(x, y, '#646464')

# draw the main part needle
for i in range(-8, 16 + 1):
x = int(NX + rx * i * SCALE_X)
y = int(NY + ry * i * SCALE_Y)
if i >= 0:
# Main red pointer
output.set_pixel(x, y, '#FF1414')
else:
# Grey back half
output.set_pixel(x, y, '#646464')
</syntaxhighlight>
The generated compass sprite has 102 possible unique frames, while the pre-rendered compass has significantly less, at only 32 frames.
<gallery style="text-align:center">
Compass JE1.gif|Procedurally generated
Compass JE2 BE2.gif|Pre-rendered frames
Compass Proctex Needle Points.gif|Visualization of all of the points that are plotted in drawing the needle
</gallery>
<noinclude>[[Category: Textures]]</noinclude>