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Fix preconditions and generic types (#1) #3

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Fix preconditions and generic types (#1) #3

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30 changes: 15 additions & 15 deletions Sources/SGLImage/Image.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -83,13 +83,13 @@ final public class SGLImageRGBA8 : SGLImageType {

public subscript(x:Int, y:Int) -> (r:UInt8,g:UInt8,b:UInt8,a:UInt8) {
get {
precondition(x > 0 && x < width)
precondition(y > 0 && y < height)
precondition(x >= 0 && x < width)
precondition(y >= 0 && y < height)
return array[x + y * width]
}
set {
precondition(x > 0 && x < width)
precondition(y > 0 && y < height)
precondition(x >= 0 && x < width)
precondition(y >= 0 && y < height)
array[x + y * width] = newValue
}
}
Expand All @@ -98,7 +98,7 @@ final public class SGLImageRGBA8 : SGLImageType {


// Generic image container.
public class SGLImage<T> : SGLImageType {
public class SGLImage<T:BinaryInteger> : SGLImageType {
public let width:Int, height:Int, channels:Int
private let buffer:UnsafeMutableBufferPointer<T>

Expand All @@ -125,22 +125,22 @@ public class SGLImage<T> : SGLImageType {

public subscript(x:Int, y:Int, channel:Int) -> T {
get {
precondition(x > 0 && x < width)
precondition(y > 0 && y < height)
precondition(channel > 0 && channel < channels)
precondition(x >= 0 && x < width)
precondition(y >= 0 && y < height)
precondition(channel >= 0 && channel < channels)
return buffer[channel + x * channels + y * width * channels]
}
set {
precondition(x > 0 && x < width)
precondition(y > 0 && y < height)
precondition(channel > 0 && channel < channels)
precondition(x >= 0 && x < width)
precondition(y >= 0 && y < height)
precondition(channel >= 0 && channel < channels)
buffer[channel + x * channels + y * width * channels] = newValue
}
}
}


final public class SGLImageGreyscale<T> : SGLImage<T> {
final public class SGLImageGreyscale<T:BinaryInteger> : SGLImage<T> {
public init(_ loader:SGLImageLoader) {
precondition(loader.error == nil)
super.init(
Expand All @@ -153,7 +153,7 @@ final public class SGLImageGreyscale<T> : SGLImage<T> {
}


final public class SGLImageGreyAlpha<T> : SGLImage<T> {
final public class SGLImageGreyAlpha<T:BinaryInteger> : SGLImage<T> {
public init(_ loader:SGLImageLoader) {
precondition(loader.error == nil)
super.init(
Expand All @@ -166,7 +166,7 @@ final public class SGLImageGreyAlpha<T> : SGLImage<T> {
}


final public class SGLImageRGB<T> : SGLImage<T> {
final public class SGLImageRGB<T:BinaryInteger> : SGLImage<T> {
public init(_ loader:SGLImageLoader) {
precondition(loader.error == nil)
super.init(
Expand All @@ -179,7 +179,7 @@ final public class SGLImageRGB<T> : SGLImage<T> {
}


final public class SGLImageRGBA<T> : SGLImage<T> {
final public class SGLImageRGBA<T:BinaryInteger> : SGLImage<T> {
public init(_ loader:SGLImageLoader) {
precondition(loader.error == nil)
super.init(
Expand Down