30 lines
794 B
Go
30 lines
794 B
Go
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// Copyright 2012 The Graphics-Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package interp
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import (
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"image"
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"image/color"
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)
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// Interp interpolates an image's color at fractional co-ordinates.
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type Interp interface {
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// Interp interpolates (x, y).
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Interp(src image.Image, x, y float64) color.Color
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}
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// RGBA is a fast-path interpolation implementation for image.RGBA.
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// It is common for an Interp to also implement RGBA.
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type RGBA interface {
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// RGBA interpolates (x, y).
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RGBA(src *image.RGBA, x, y float64) color.RGBA
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}
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// Gray is a fast-path interpolation implementation for image.Gray.
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type Gray interface {
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// Gray interpolates (x, y).
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Gray(src *image.Gray, x, y float64) color.Gray
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}
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