30 lines
761 B
Go
30 lines
761 B
Go
package tomo
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import "io"
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import "image"
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// Texture is a handle that points to a 2D raster image managed by the backend.
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type Texture interface {
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io.Closer
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// Clip returns a smaller section of this texture, pointing to the same
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// internal data. Becaue of this, closing a clipped section will close
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// the original texture as well.
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Clip (image.Rectangle) Texture
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}
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type protectedTexture struct {
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Texture
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}
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func (protectedTexture) Close () error {
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return nil
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}
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// Protect makes the Close() method of a texture do nothing. This is useful if
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// several of the same texture are given out to different objects, but only one
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// has the responsibility of closing it.
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func Protect (texture Texture) Texture {
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return protectedTexture { Texture: texture }
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}
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