Author: LakeFox
Email: [email protected]
Date: Sat, 26 Apr 2025 15:16:04 -0600
gg/bezier.go
Found some memory errors and made GG a part of grim to adapt it better
Commits
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Diff 
diff --git a/gg/bezier.go b/gg/bezier.go
deleted file mode 100644
index f2cd7ab..0000000
--- a/gg/bezier.go
+++ /dev/null
@@ -1,59 +0,0 @@
-package gg
-
-import "math"
-
-func quadratic(x0, y0, x1, y1, x2, y2, t float64) (x, y float64) {
-	u := 1 - t
-	a := u * u
-	b := 2 * u * t
-	c := t * t
-	x = a*x0 + b*x1 + c*x2
-	y = a*y0 + b*y1 + c*y2
-	return
-}
-
-func QuadraticBezier(x0, y0, x1, y1, x2, y2 float64) []Point {
-	l := (math.Hypot(x1-x0, y1-y0) +
-		math.Hypot(x2-x1, y2-y1))
-	n := int(l + 0.5)
-	if n < 4 {
-		n = 4
-	}
-	d := float64(n) - 1
-	result := make([]Point, n)
-	for i := 0; i < n; i++ {
-		t := float64(i) / d
-		x, y := quadratic(x0, y0, x1, y1, x2, y2, t)
-		result[i] = Point{x, y}
-	}
-	return result
-}
-
-func cubic(x0, y0, x1, y1, x2, y2, x3, y3, t float64) (x, y float64) {
-	u := 1 - t
-	a := u * u * u
-	b := 3 * u * u * t
-	c := 3 * u * t * t
-	d := t * t * t
-	x = a*x0 + b*x1 + c*x2 + d*x3
-	y = a*y0 + b*y1 + c*y2 + d*y3
-	return
-}
-
-func CubicBezier(x0, y0, x1, y1, x2, y2, x3, y3 float64) []Point {
-	l := (math.Hypot(x1-x0, y1-y0) +
-		math.Hypot(x2-x1, y2-y1) +
-		math.Hypot(x3-x2, y3-y2))
-	n := int(l + 0.5)
-	if n < 4 {
-		n = 4
-	}
-	d := float64(n) - 1
-	result := make([]Point, n)
-	for i := 0; i < n; i++ {
-		t := float64(i) / d
-		x, y := cubic(x0, y0, x1, y1, x2, y2, x3, y3, t)
-		result[i] = Point{x, y}
-	}
-	return result
-}

package gg

import "math"

func quadratic(x0, y0, x1, y1, x2, y2, t float64) (x, y float64) {
	u := 1 - t
	a := u * u
	b := 2 * u * t
	c := t * t
	x = a*x0 + b*x1 + c*x2
	y = a*y0 + b*y1 + c*y2
	return
}

func QuadraticBezier(x0, y0, x1, y1, x2, y2 float64) []Point {
	l := (math.Hypot(x1-x0, y1-y0) +
		math.Hypot(x2-x1, y2-y1))
	n := int(l + 0.5)
	if n < 4 {
		n = 4
	}
	d := float64(n) - 1
	result := make([]Point, n)
	for i := 0; i < n; i++ {
		t := float64(i) / d
		x, y := quadratic(x0, y0, x1, y1, x2, y2, t)
		result[i] = Point{x, y}
	}
	return result
}

func cubic(x0, y0, x1, y1, x2, y2, x3, y3, t float64) (x, y float64) {
	u := 1 - t
	a := u * u * u
	b := 3 * u * u * t
	c := 3 * u * t * t
	d := t * t * t
	x = a*x0 + b*x1 + c*x2 + d*x3
	y = a*y0 + b*y1 + c*y2 + d*y3
	return
}

func CubicBezier(x0, y0, x1, y1, x2, y2, x3, y3 float64) []Point {
	l := (math.Hypot(x1-x0, y1-y0) +
		math.Hypot(x2-x1, y2-y1) +
		math.Hypot(x3-x2, y3-y2))
	n := int(l + 0.5)
	if n < 4 {
		n = 4
	}
	d := float64(n) - 1
	result := make([]Point, n)
	for i := 0; i < n; i++ {
		t := float64(i) / d
		x, y := cubic(x0, y0, x1, y1, x2, y2, x3, y3, t)
		result[i] = Point{x, y}
	}
	return result
}