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https://github.com/mum4k/termdash.git
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dc1f2c5a29
Done here: - adding helper library which determines area from size and vice versa. - fixing an off-by-one bug related to area sizes. - allowing overwrite of cell options by passing an existing cell.Options instance. - implementing canvas and its tests.
24 lines
562 B
Go
24 lines
562 B
Go
// Package area provides functions working with image areas.
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package area
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import (
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"fmt"
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"image"
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)
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// Size returns the size of the provided area.
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func Size(area image.Rectangle) image.Point {
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return image.Point{
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area.Dx(),
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area.Dy(),
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}
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}
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// FromSize returns the corresponding area for the provided size.
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func FromSize(size image.Point) (image.Rectangle, error) {
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if size.X < 0 || size.Y < 0 {
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return image.Rectangle{}, fmt.Errorf("cannot convert zero or negative size to an area, got: %+v", size)
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}
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return image.Rect(0, 0, size.X, size.Y), nil
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}
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