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Add linear interpolation function to line

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Alex Clink 2022-03-03 00:01:20 -05:00
parent 304a8a8830
commit 2e3d2b67b5
2 changed files with 9 additions and 4 deletions
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5
src/line.cr
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@ -61,6 +61,11 @@ module PF
(y - p1.y) / slope + p1.x
end
# Linearly interpolate
def lerp(t : Float64)
(@p2 - @p1) * t + @p1
end
def length
Math.sqrt((run.abs * 2) + (rise.abs * 2))
end

8
src/pixel.cr
View file

@ -53,19 +53,19 @@ module PF
end
def *(n : Float64)
PF::Pixel.new((@r * n).to_u8, (@g * n).to_u8, (@b * n).to_u8, @a)
Pixel.new((@r * n).to_u8, (@g * n).to_u8, (@b * n).to_u8, @a)
end
def /(n : Float64)
PF::Pixel.new((@r / n).to_u8, (@g / n).to_u8, (@b / n).to_u8, @a)
Pixel.new((@r / n).to_u8, (@g / n).to_u8, (@b / n).to_u8, @a)
end
def +(n : Float64)
PF::Pixel.new((@r + n).to_u8, (@g + n).to_u8, (@b + n).to_u8, @a)
Pixel.new((@r + n).to_u8, (@g + n).to_u8, (@b + n).to_u8, @a)
end
def -(n : Float64)
PF::Pixel.new((@r - n).to_u8, (@g - n).to_u8, (@b - n).to_u8, @a)
Pixel.new((@r - n).to_u8, (@g - n).to_u8, (@b - n).to_u8, @a)
end
def to_u