52 lines
771 B
Go
52 lines
771 B
Go
// Copyright 2010 The draw2d Authors. All rights reserved.
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// created: 21/11/2010 by Laurent Le Goff
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package draw2d
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import (
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"math"
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)
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func distance(x1, y1, x2, y2 float64) float64 {
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dx := x2 - x1
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dy := y2 - y1
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return float64(math.Sqrt(dx*dx + dy*dy))
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}
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func vectorDistance(dx, dy float64) float64 {
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return float64(math.Sqrt(dx*dx + dy*dy))
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}
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func squareDistance(x1, y1, x2, y2 float64) float64 {
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dx := x2 - x1
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dy := y2 - y1
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return dx*dx + dy*dy
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}
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func min(x, y float64) float64 {
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if x < y {
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return x
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}
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return y
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}
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func max(x, y float64) float64 {
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if x > y {
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return x
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}
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return y
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}
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func minMax(x, y float64) (min, max float64) {
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if x > y {
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return y, x
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}
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return x, y
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}
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func minUint32(a, b uint32) uint32 {
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if a < b {
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return a
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}
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return b
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}
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