mirror of
https://github.com/Orama-Interactive/Pixelorama.git
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55 lines
2.1 KiB
GDScript
55 lines
2.1 KiB
GDScript
extends Panel
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const RULER_WIDTH := 16
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var font := preload("res://Assets/Fonts/Roboto-Small.tres")
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var major_subdivision := 2
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var minor_subdivision := 5
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var first : Vector2
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var last : Vector2
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# warning-ignore:unused_argument
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func _process(delta) -> void:
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update()
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#Code taken and modified from Godot's source code
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func _draw() -> void:
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var transform := Transform2D()
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var ruler_transform := Transform2D()
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var major_subdivide := Transform2D()
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var minor_subdivide := Transform2D()
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var zoom := 1 / Global.camera.zoom.x
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transform.x = Vector2(zoom, zoom)
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transform.origin = Global.main_viewport.rect_size / 2 + (Global.camera.offset) * -zoom
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var basic_rule := 100.0
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var i := 0
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while(basic_rule * zoom > 100):
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basic_rule /= 5.0 if i % 2 else 2.0
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i += 1
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i = 0
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while(basic_rule * zoom < 100):
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basic_rule *= 2.0 if i % 2 else 5.0
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i += 1
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ruler_transform = ruler_transform.scaled(Vector2(basic_rule, basic_rule))
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major_subdivide = major_subdivide.scaled(Vector2(1.0 / major_subdivision, 1.0 / major_subdivision))
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minor_subdivide = minor_subdivide.scaled(Vector2(1.0 / minor_subdivision, 1.0 / minor_subdivision))
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first = (transform * ruler_transform * major_subdivide * minor_subdivide).affine_inverse().xform(Vector2.ZERO)
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last = (transform * ruler_transform * major_subdivide * minor_subdivide).affine_inverse().xform(Global.main_viewport.rect_size)
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for i in range(ceil(first.x), last.x):
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var position : Vector2 = (transform * ruler_transform * major_subdivide * minor_subdivide).xform(Vector2(i, 0))
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if i % (major_subdivision * minor_subdivision) == 0:
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draw_line(Vector2(position.x + RULER_WIDTH, 0), Vector2(position.x + RULER_WIDTH, RULER_WIDTH), Color.white)
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var val = (ruler_transform * major_subdivide * minor_subdivide).xform(Vector2(i, 0)).x
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draw_string(font, Vector2(position.x + RULER_WIDTH + 2, font.get_height() - 4), str(int(val)))
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else:
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if i % minor_subdivision == 0:
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draw_line(Vector2(position.x + RULER_WIDTH, RULER_WIDTH * 0.33), Vector2(position.x + RULER_WIDTH, RULER_WIDTH), Color.white)
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else:
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draw_line(Vector2(position.x + RULER_WIDTH, RULER_WIDTH * 0.66), Vector2(position.x + RULER_WIDTH, RULER_WIDTH), Color.white) |