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handle3 methods, 2 fields

LightField

A 2D scalar field of poured lights over grid cells: each pour writes a radial linear falloff and cells keep the maximum of everything poured onto them, so overlapping lights never sum past the brightest source. Cells are 0-based, addressed as (x, y) = (column, row) with a top-left origin and Y increasing downward, the same frame as Grid.

Obtained from
datumhue.grid.light_field

The examples on this page start from:

lua
local light = datumhue.grid.light_field(16, 16)

Fields 2

FieldTypeAccessDescription
widthintegerread-onlyField width in cells.
heightintegerread-onlyField height in cells.

Methods 3

LightField:pour

method
LightField:pour(x: number, y: number, strength: number, range: number)

Pour a light centered at (x, y), which may be fractional: every cell within range takes the larger of its value and strength falling off linearly to zero at range.

Example
-- A torch on cell (8, 8): full strength, fading out over 4 cells.
light:pour(8, 8, 1, 4)
print(light:get(8, 8), light:get(10, 8)) --> 1.0 0.5
print(light:get(12, 8)) --> 0.0
-- Where lights overlap, the brightest wins; they never add up.
light:pour(10, 8, 0.25, 2)
print(light:get(10, 8)) --> 0.5

LightField:get

method
LightField:get(x: integer, y: integer) -> number

The brightest pour reaching cell (x, y); 0 where nothing reaches or out of bounds.

LightField:clear

method
LightField:clear()

Zero every cell.

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Victor Mono is licensed under the SIL Open Font License 1.1
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This Font Software is licensed under the SIL Open Font License, Version 1.1.
This license is copied below, and is also available with a FAQ at:
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