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Added a 4-way bevel pattern

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This commit is contained in:
Sasha Koshka 2023-01-23 23:40:55 -05:00
parent 9c24184f24
commit 24bcd6977a
1 changed files with 30 additions and 0 deletions
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30
artist/chisel.go
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@ -31,3 +31,33 @@ func (pattern Beveled) AtWhen (x, y, width, height int) (c color.RGBA) {
return pattern.Shadow.AtWhen(x, y, width, height) return pattern.Shadow.AtWhen(x, y, width, height)
} }
} }
// QuadBeveled is like Beveled, but with four sides. A pattern can be specified
// for each one.
type QuadBeveled [4]Pattern
// AtWhen satisfies the Pattern interface.
func (pattern QuadBeveled) AtWhen (x, y, width, height int) (c color.RGBA) {
bottom := y > height / 2
right := x > width / 2
top := !bottom
left := !right
side := 0
switch {
case top && left:
if x > y { side = 0 } else { side = 3 }
case top && right:
if width - x < y { side = 1 } else { side = 0 }
case bottom && left:
if x > height - y { side = 2 } else { side = 3 }
case bottom && right:
if width - x < height - y { side = 1 } else { side = 2 }
}
return pattern[side].AtWhen(x, y, width, height)
}