25 lines
618 B
Go
25 lines
618 B
Go
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package artist
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import "image"
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import "image/color"
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// Bordered is a pattern with a border and a fill.
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type Bordered struct {
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Fill Pattern
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Stroke
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}
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// AtWhen satisfies the Pattern interface.
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func (pattern Bordered) AtWhen (x, y, width, height int) (c color.RGBA) {
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outerBounds := image.Rectangle { Max: image.Point { width, height }}
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innerBounds := outerBounds.Inset(pattern.Weight)
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if (image.Point { x, y }).In (innerBounds) {
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return pattern.Fill.AtWhen (
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x - pattern.Weight,
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y - pattern.Weight,
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innerBounds.Dx(), innerBounds.Dy())
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} else {
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return pattern.Stroke.AtWhen(x, y, width, height)
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}
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}
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