refactor rotationId (22fc9ce3) · Commits · blackheaven / tinygraphs

draw/isogrids/hexa16.go

+32 −189

Original line number	Diff line number	Diff line
		@@ -63,54 +63,11 @@ func Hexa16(w http.ResponseWriter, key string, colors []color.RGBA, size, lines
		ys := []int{y1, y2, y3}

		if (xL%2) == 0 && isInTriangleL(triangleId(xL, yL, left), xL, yL) {
		tid := triangleId(xL, yL, left)
		stid := subTriangleId(xL, yL, left, tid)
		if SubTriangleIdsFromId(0)[tid] == stid {
		canvas.Polygon(xs, ys, fillTriangle[0])
		} else if SubTriangleIdsFromId(1)[tid] == stid {
		canvas.Polygon(xs, ys, fillTriangle[1])
		} else if SubTriangleIdsFromId(2)[tid] == stid {
		canvas.Polygon(xs, ys, fillTriangle[2])
		} else if SubTriangleIdsFromId(3)[tid] == stid {
		canvas.Polygon(xs, ys, fillTriangle[3])
		} else if SubTriangleIdsFromId(4)[tid] == stid {
		canvas.Polygon(xs, ys, fillTriangle[4])
		} else if SubTriangleIdsFromId(5)[tid] == stid {
		canvas.Polygon(xs, ys, fillTriangle[5])
		} else if SubTriangleIdsFromId(6)[tid] == stid {
		canvas.Polygon(xs, ys, fillTriangle[6])
		} else if SubTriangleIdsFromId(7)[tid] == stid {
		canvas.Polygon(xs, ys, fillTriangle[7])
		} else if SubTriangleIdsFromId(8)[tid] == stid {
		canvas.Polygon(xs, ys, fillTriangle[8])
		} else {
		canvas.Polygon(xs, ys, "fill:rgb(255,255,0)")
		}
		rid := rotationId(xL, yL, left)
		canvas.Polygon(xs, ys, fillTriangle[rid])
		} else if (xL%2) != 0 && isInTriangleR(triangleId(xL, yL, right), xL, yL) {
		tid := triangleId(xL, yL, right)
		stid := subTriangleId(xL, yL, right, tid)

		if SubTriangleIdsFromId(0)[tid] == stid {
		canvas.Polygon(xs, ys, fillTriangle[0])
		} else if SubTriangleIdsFromId(1)[tid] == stid {
		canvas.Polygon(xs, ys, fillTriangle[1])
		} else if SubTriangleIdsFromId(2)[tid] == stid {
		canvas.Polygon(xs, ys, fillTriangle[2])
		} else if SubTriangleIdsFromId(3)[tid] == stid {
		canvas.Polygon(xs, ys, fillTriangle[3])
		} else if SubTriangleIdsFromId(4)[tid] == stid {
		canvas.Polygon(xs, ys, fillTriangle[4])
		} else if SubTriangleIdsFromId(5)[tid] == stid {
		canvas.Polygon(xs, ys, fillTriangle[5])
		} else if SubTriangleIdsFromId(6)[tid] == stid {
		canvas.Polygon(xs, ys, fillTriangle[6])
		} else if SubTriangleIdsFromId(7)[tid] == stid {
		canvas.Polygon(xs, ys, fillTriangle[7])
		} else if SubTriangleIdsFromId(8)[tid] == stid {
		canvas.Polygon(xs, ys, fillTriangle[8])
		} else {
		canvas.Polygon(xs, ys, "fill:rgb(255,255,0)")
		}
		rid := rotationId(xL, yL, right)
		canvas.Polygon(xs, ys, fillTriangle[rid])
		} else {
		canvas.Polygon(xs, ys, fill1)
		}
		@@ -119,54 +76,11 @@ func Hexa16(w http.ResponseWriter, key string, colors []color.RGBA, size, lines
		xLMirror := lines - xL - 1
		yLMirror := yL
		if (xLMirror%2) == 0 && isInTriangleL(triangleId(xLMirror, yLMirror, left), xLMirror, yLMirror) {
		tid := triangleId(xLMirror, yLMirror, left)
		stid := subTriangleId(xLMirror, yLMirror, left, tid)
		if SubTriangleIdsFromId(0)[tid] == stid {
		canvas.Polygon(xsMirror, ys, fillTriangle[0])
		} else if SubTriangleIdsFromId(1)[tid] == stid {
		canvas.Polygon(xsMirror, ys, fillTriangle[1])
		} else if SubTriangleIdsFromId(2)[tid] == stid {
		canvas.Polygon(xsMirror, ys, fillTriangle[2])
		} else if SubTriangleIdsFromId(3)[tid] == stid {
		canvas.Polygon(xsMirror, ys, fillTriangle[3])
		} else if SubTriangleIdsFromId(4)[tid] == stid {
		canvas.Polygon(xsMirror, ys, fillTriangle[4])
		} else if SubTriangleIdsFromId(5)[tid] == stid {
		canvas.Polygon(xsMirror, ys, fillTriangle[5])
		} else if SubTriangleIdsFromId(6)[tid] == stid {
		canvas.Polygon(xsMirror, ys, fillTriangle[6])
		} else if SubTriangleIdsFromId(7)[tid] == stid {
		canvas.Polygon(xsMirror, ys, fillTriangle[7])
		} else if SubTriangleIdsFromId(8)[tid] == stid {
		canvas.Polygon(xsMirror, ys, fillTriangle[8])
		} else {
		canvas.Polygon(xsMirror, ys, "fill:rgb(255,255,0)")
		}
		rid := rotationId(xLMirror, yLMirror, left)
		canvas.Polygon(xsMirror, ys, fillTriangle[rid])
		} else if (xLMirror%2) != 0 && isInTriangleR(triangleId(xLMirror, yLMirror, right), xLMirror, yLMirror) {
		tid := triangleId(xLMirror, yLMirror, right)
		stid := subTriangleId(xLMirror, yLMirror, right, tid)
		if SubTriangleIdsFromId(0)[tid] == stid {
		canvas.Polygon(xsMirror, ys, fillTriangle[0])
		} else if SubTriangleIdsFromId(1)[tid] == stid {
		canvas.Polygon(xsMirror, ys, fillTriangle[1])
		} else if SubTriangleIdsFromId(2)[tid] == stid {
		canvas.Polygon(xsMirror, ys, fillTriangle[2])
		} else if SubTriangleIdsFromId(3)[tid] == stid {
		canvas.Polygon(xsMirror, ys, fillTriangle[3])
		} else if SubTriangleIdsFromId(4)[tid] == stid {
		canvas.Polygon(xsMirror, ys, fillTriangle[4])
		} else if SubTriangleIdsFromId(5)[tid] == stid {
		canvas.Polygon(xsMirror, ys, fillTriangle[5])
		} else if SubTriangleIdsFromId(6)[tid] == stid {
		canvas.Polygon(xsMirror, ys, fillTriangle[6])
		} else if SubTriangleIdsFromId(7)[tid] == stid {
		canvas.Polygon(xsMirror, ys, fillTriangle[7])
		} else if SubTriangleIdsFromId(8)[tid] == stid {
		canvas.Polygon(xsMirror, ys, fillTriangle[8])

		} else {
		canvas.Polygon(xsMirror, ys, "fill:rgb(255,255,0)")
		}
		rid := rotationId(xLMirror, yLMirror, right)
		canvas.Polygon(xsMirror, ys, fillTriangle[rid])
		} else {
		canvas.Polygon(xsMirror, ys, fill1)
		}
		@@ -190,108 +104,22 @@ func Hexa16(w http.ResponseWriter, key string, colors []color.RGBA, size, lines
		ys1 := []int{y11, y12, y13}
		// triangles that go to the right
		if (xL%2) != 0 && isInTriangleL(triangleId(xL, yL, left), xL, yL) {
		tid := triangleId(xL, yL, left)
		stid := subTriangleId(xL, yL, left, tid)
		if SubTriangleIdsFromId(0)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[0])
		} else if SubTriangleIdsFromId(1)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[1])
		} else if SubTriangleIdsFromId(2)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[2])
		} else if SubTriangleIdsFromId(3)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[3])
		} else if SubTriangleIdsFromId(4)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[4])
		} else if SubTriangleIdsFromId(5)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[5])
		} else if SubTriangleIdsFromId(6)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[6])
		} else if SubTriangleIdsFromId(7)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[7])
		} else if SubTriangleIdsFromId(8)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[8])
		} else {
		canvas.Polygon(xs1, ys1, "fill:rgb(255,255,0)")
		}
		rid := rotationId(xL, yL, left)
		canvas.Polygon(xs1, ys1, fillTriangle[rid])
		} else if (xL%2) == 0 && isInTriangleR(triangleId(xL, yL, right), xL, yL) {
		tid := triangleId(xL, yL, right)
		stid := subTriangleId(xL, yL, right, tid)
		if SubTriangleIdsFromId(0)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[0])
		} else if SubTriangleIdsFromId(1)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[1])
		} else if SubTriangleIdsFromId(2)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[2])
		} else if SubTriangleIdsFromId(3)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[3])
		} else if SubTriangleIdsFromId(4)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[4])
		} else if SubTriangleIdsFromId(5)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[5])
		} else if SubTriangleIdsFromId(6)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[6])
		} else if SubTriangleIdsFromId(7)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[7])
		} else if SubTriangleIdsFromId(8)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[8])
		} else {
		canvas.Polygon(xs1, ys1, "fill:rgb(255,255,0)")
		}
		rid := rotationId(xL, yL, right)
		canvas.Polygon(xs1, ys1, fillTriangle[rid])
		} else {
		canvas.Polygon(xs1, ys1, fill2)
		}

		xs1 = mirrorCoordinates(xs1, lines, distance, offset*2)
		if (xL%2) == 0 && isInTriangleL(triangleId(xLMirror, yLMirror, left), xLMirror, yLMirror) {
		tid := triangleId(xLMirror, yLMirror, left)
		stid := subTriangleId(xLMirror, yLMirror, left, tid)
		if SubTriangleIdsFromId(0)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[0])
		} else if SubTriangleIdsFromId(1)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[1])
		} else if SubTriangleIdsFromId(2)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[2])
		} else if SubTriangleIdsFromId(3)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[3])
		} else if SubTriangleIdsFromId(4)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[4])
		} else if SubTriangleIdsFromId(5)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[5])
		} else if SubTriangleIdsFromId(6)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[6])
		} else if SubTriangleIdsFromId(7)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[7])
		} else if SubTriangleIdsFromId(8)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[8])

		} else {
		canvas.Polygon(xs1, ys1, "fill:rgb(255,255,0)")
		}
		rid := rotationId(xLMirror, yLMirror, left)
		canvas.Polygon(xs1, ys1, fillTriangle[rid])
		} else if (xL%2) != 0 && isInTriangleR(triangleId(xLMirror, yLMirror, right), xLMirror, yLMirror) {
		tid := triangleId(xLMirror, yLMirror, right)
		stid := subTriangleId(xLMirror, yLMirror, right, tid)
		if SubTriangleIdsFromId(0)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[0])
		} else if SubTriangleIdsFromId(1)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[1])
		} else if SubTriangleIdsFromId(2)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[2])
		} else if SubTriangleIdsFromId(3)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[3])
		} else if SubTriangleIdsFromId(4)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[4])
		} else if SubTriangleIdsFromId(5)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[5])
		} else if SubTriangleIdsFromId(6)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[6])
		} else if SubTriangleIdsFromId(7)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[7])
		} else if SubTriangleIdsFromId(8)[tid] == stid {
		canvas.Polygon(xs1, ys1, fillTriangle[8])

		} else {
		canvas.Polygon(xs1, ys1, "fill:rgb(255,255,0)")
		}
		rid := rotationId(xLMirror, yLMirror, right)
		canvas.Polygon(xs1, ys1, fillTriangle[rid])
		} else {
		canvas.Polygon(xs1, ys1, fill2)
		}
		@@ -600,7 +428,7 @@ func subTriangleId(x, y, direction, id int) int {
		return -1
		}

		func SubTriangleIdsFromId(lookforSubTriangleId int) []int {
		func subTriangleRotations(lookforSubTriangleId int) []int {

		m := map[int][]int{
		0: []int{0, 6, 8, 8, 2, 0},
		@@ -618,3 +446,18 @@ func SubTriangleIdsFromId(lookforSubTriangleId int) []int {
		}
		return nil
		}

		// rotationId returns the original sub triangle id
		// if the current triangle was rotated to position 0.
		func rotationId(xL, yL, direction int) int {
		current_tid := triangleId(xL, yL, direction)
		current_stid := subTriangleId(xL, yL, direction, current_tid)
		numberOfSubTriangles := 9
		for i := 0; i < numberOfSubTriangles; i++ {
		rotations := subTriangleRotations(i)
		if rotations[current_tid] == current_stid {
		return i
		}
		}
		return -1
		}