fix hexa isogrid has now equilateral triangles (bc1719b3) · Commits · blackheaven / tinygraphs

draw/isogrids/hexa.go

+16 −16

Original line number	Diff line number	Diff line
		@@ -57,19 +57,19 @@ func Hexa(w http.ResponseWriter, key string, colors []color.RGBA, size, lines in
		y2 = y1 + fringeSize/2
		y3 = yL*fringeSize + distance
		}
		xs := []int{x1, x2, x3}
		ys := []int{y1, y2, y3}
		xs := []int{x1 + offset/2, x2 + offset/2, x3 + offset/2}
		ys := []int{y1 + offset/2, y2 + offset/2, y3 + offset/2}
		if lines%4 != 0 {
		xs[0] = x2
		xs[1] = x1
		xs[2] = x2
		xs[0] = x2 + offset/2
		xs[1] = x1 + offset/2
		xs[2] = x2 + offset/2
		}
		canvas.Polygon(xs, ys, fill1)

		xsMirror := []int{0, 0, 0}
		xsMirror[0] = (lines * fringeSize) - xs[0]
		xsMirror[1] = (lines * fringeSize) - xs[1]
		xsMirror[2] = (lines * fringeSize) - xs[2]
		xsMirror[0] = (lines * fringeSize) - xs[0] + offset
		xsMirror[1] = (lines * fringeSize) - xs[1] + offset
		xsMirror[2] = (lines * fringeSize) - xs[2] + offset

		canvas.Polygon(xsMirror, ys, fill1)

		@@ -89,18 +89,18 @@ func Hexa(w http.ResponseWriter, key string, colors []color.RGBA, size, lines in
		y12 = y1 + fringeSize
		y13 = yL*fringeSize + fringeSize/2 + distance
		}
		xs1 := []int{x11, x12, x13}
		ys1 := []int{y11, y12, y13}
		xs1 := []int{x11 + offset/2, x12 + offset/2, x13 + offset/2}
		ys1 := []int{y11 + offset/2, y12 + offset/2, y13 + offset/2}
		if lines%4 != 0 {
		xs1[0] = x12
		xs1[1] = x11
		xs1[2] = x12
		xs1[0] = x12 + offset/2
		xs1[1] = x11 + offset/2
		xs1[2] = x12 + offset/2
		}

		canvas.Polygon(xs1, ys1, fill2)
		xs1[0] = (lines * fringeSize) - xs1[0]
		xs1[1] = (lines * fringeSize) - xs1[1]
		xs1[2] = (lines * fringeSize) - xs1[2]
		xs1[0] = (lines * fringeSize) - xs1[0] + offset
		xs1[1] = (lines * fringeSize) - xs1[1] + offset
		xs1[2] = (lines * fringeSize) - xs1[2] + offset

		canvas.Polygon(xs1, ys1, fill2)
		}