iteration 6
This commit is contained in:
Mayank77maruti
parent
04825458a8
commit
9daef7f890
1 changed files with 197 additions and 5 deletions
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@ -194,6 +194,184 @@
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// }
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// }
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// package d2cycle
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// import (
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// "context"
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// "math"
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// "oss.terrastruct.com/d2/d2graph"
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// "oss.terrastruct.com/d2/lib/geo"
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// "oss.terrastruct.com/d2/lib/label"
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// "oss.terrastruct.com/util-go/go2"
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// )
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// const (
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// MIN_RADIUS = 200
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// PADDING = 20
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// MIN_SEGMENT_LEN = 10
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// ARC_STEPS = 30
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// )
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// func Layout(ctx context.Context, g *d2graph.Graph, layout d2graph.LayoutGraph) error {
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// objects := g.Root.ChildrenArray
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// if len(objects) == 0 {
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// return nil
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// }
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// for _, obj := range g.Objects {
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// positionLabelsIcons(obj)
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// }
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// radius := calculateRadius(objects)
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// positionObjects(objects, radius)
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// for _, edge := range g.Edges {
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// createCircularArc(edge)
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// }
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// return nil
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// }
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// func calculateRadius(objects []*d2graph.Object) float64 {
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// numObjects := float64(len(objects))
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// maxSize := 0.0
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// for _, obj := range objects {
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// size := math.Max(obj.Box.Width, obj.Box.Height)
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// maxSize = math.Max(maxSize, size)
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// }
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// minRadius := (maxSize/2.0 + PADDING) / math.Sin(math.Pi/numObjects)
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// return math.Max(minRadius, MIN_RADIUS)
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// }
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// func positionObjects(objects []*d2graph.Object, radius float64) {
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// numObjects := float64(len(objects))
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// angleOffset := -math.Pi / 2
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// for i, obj := range objects {
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// angle := angleOffset + (2*math.Pi*float64(i)/numObjects)
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// x := radius * math.Cos(angle)
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// y := radius * math.Sin(angle)
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// obj.TopLeft = geo.NewPoint(x-obj.Box.Width/2, y-obj.Box.Height/2)
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// }
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// }
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// func createCircularArc(edge *d2graph.Edge) {
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// if edge.Src == nil || edge.Dst == nil {
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// return
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// }
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// srcCenter := edge.Src.Center()
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// dstCenter := edge.Dst.Center()
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// srcAngle := math.Atan2(srcCenter.Y, srcCenter.X)
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// dstAngle := math.Atan2(dstCenter.Y, dstCenter.X)
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// if dstAngle < srcAngle {
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// dstAngle += 2 * math.Pi
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// }
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// arcRadius := math.Hypot(srcCenter.X, srcCenter.Y)
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// path := make([]*geo.Point, 0, ARC_STEPS+1)
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// for i := 0; i <= ARC_STEPS; i++ {
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// t := float64(i) / float64(ARC_STEPS)
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// angle := srcAngle + t*(dstAngle-srcAngle)
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// x := arcRadius * math.Cos(angle)
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// y := arcRadius * math.Sin(angle)
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// path = append(path, geo.NewPoint(x, y))
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// }
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// path[0] = srcCenter
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// path[len(path)-1] = dstCenter
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// startIndex, newSrc := clampPointOutsideBox(edge.Src.Box, path, 0)
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// endIndex, newDst := clampPointOutsideBoxReverse(edge.Dst.Box, path, len(path)-1)
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// path[0] = newSrc
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// path[len(path)-1] = newDst
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// edge.Route = path[startIndex : endIndex+1]
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// edge.IsCurve = true
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// }
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// func clampPointOutsideBox(box *geo.Box, path []*geo.Point, startIdx int) (int, *geo.Point) {
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// if startIdx >= len(path)-1 {
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// return startIdx, path[startIdx]
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// }
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// if !boxContains(box, path[startIdx]) {
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// return startIdx, path[startIdx]
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// }
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// for i := startIdx + 1; i < len(path); i++ {
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// if boxContains(box, path[i]) {
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// continue
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// }
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// intersection := refineIntersection(box, path[i-1], path[i])
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// return i, intersection
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// }
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// last := len(path) - 1
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// return last, path[last]
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// }
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// func clampPointOutsideBoxReverse(box *geo.Box, path []*geo.Point, endIdx int) (int, *geo.Point) {
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// if endIdx <= 0 {
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// return endIdx, path[endIdx]
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// }
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// if !boxContains(box, path[endIdx]) {
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// return endIdx, path[endIdx]
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// }
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// for j := endIdx - 1; j >= 0; j-- {
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// if boxContains(box, path[j]) {
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// continue
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// }
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// intersection := refineIntersection(box, path[j], path[j+1])
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// return j, intersection
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// }
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// return 0, path[0]
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// }
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// func refineIntersection(box *geo.Box, pInside, pOutside *geo.Point) *geo.Point {
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// const epsilon = 0.001
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// a := pInside
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// b := pOutside
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// for math.Hypot(b.X-a.X, b.Y-a.Y) > epsilon {
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// mid := geo.NewPoint((a.X+b.X)/2, (a.Y+b.Y)/2)
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// if boxContains(box, mid) {
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// a = mid
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// } else {
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// b = mid
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// }
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// }
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// return geo.NewPoint((a.X+b.X)/2, (a.Y+b.Y)/2)
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// }
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// func boxContains(b *geo.Box, p *geo.Point) bool {
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// return p.X >= b.TopLeft.X && p.X <= b.TopLeft.X+b.Width && p.Y >= b.TopLeft.Y && p.Y <= b.TopLeft.Y+b.Height
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// }
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// func boxIntersections(b *geo.Box, seg geo.Segment) []*geo.Point {
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// return b.Intersections(seg)
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// }
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// func positionLabelsIcons(obj *d2graph.Object) {
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// if obj.Icon != nil && obj.IconPosition == nil {
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// if len(obj.ChildrenArray) > 0 {
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// obj.IconPosition = go2.Pointer(label.OutsideTopLeft.String())
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// if obj.LabelPosition == nil {
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// obj.LabelPosition = go2.Pointer(label.OutsideTopRight.String())
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// return
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// }
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// } else if obj.SQLTable != nil || obj.Class != nil || obj.Language != "" {
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// obj.IconPosition = go2.Pointer(label.OutsideTopLeft.String())
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// } else {
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// obj.IconPosition = go2.Pointer(label.InsideMiddleCenter.String())
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// }
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// }
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// if obj.HasLabel() && obj.LabelPosition == nil {
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// if len(obj.ChildrenArray) > 0 {
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// obj.LabelPosition = go2.Pointer(label.OutsideTopCenter.String())
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// } else if obj.HasOutsideBottomLabel() {
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// obj.LabelPosition = go2.Pointer(label.OutsideBottomCenter.String())
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// } else if obj.Icon != nil {
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// obj.LabelPosition = go2.Pointer(label.InsideTopCenter.String())
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// } else {
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// obj.LabelPosition = go2.Pointer(label.InsideMiddleCenter.String())
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// }
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// if float64(obj.LabelDimensions.Width) > obj.Width || float64(obj.LabelDimensions.Height) > obj.Height {
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// if len(obj.ChildrenArray) > 0 {
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// obj.LabelPosition = go2.Pointer(label.OutsideTopCenter.String())
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// } else {
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// obj.LabelPosition = go2.Pointer(label.OutsideBottomCenter.String())
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// }
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// }
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// }
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// }
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package d2cycle
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import (
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@ -292,7 +470,7 @@ func clampPointOutsideBox(box *geo.Box, path []*geo.Point, startIdx int) (int, *
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if boxContains(box, path[i]) {
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continue
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}
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intersection := refineIntersection(box, path[i-1], path[i])
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intersection := getIntersectionPoint(box, path[i-1], path[i])
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return i, intersection
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}
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last := len(path) - 1
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@ -310,14 +488,23 @@ func clampPointOutsideBoxReverse(box *geo.Box, path []*geo.Point, endIdx int) (i
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if boxContains(box, path[j]) {
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continue
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}
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intersection := refineIntersection(box, path[j], path[j+1])
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intersection := getIntersectionPoint(box, path[j], path[j+1])
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return j, intersection
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}
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return 0, path[0]
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}
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func getIntersectionPoint(box *geo.Box, pInside, pOutside *geo.Point) *geo.Point {
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seg := geo.NewSegment(pInside, pOutside)
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inters := boxIntersections(box, *seg)
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if len(inters) > 0 {
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return inters[0]
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}
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return refineIntersection(box, pInside, pOutside)
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}
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func refineIntersection(box *geo.Box, pInside, pOutside *geo.Point) *geo.Point {
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const epsilon = 0.001
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const epsilon = 1e-6
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a := pInside
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b := pOutside
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for math.Hypot(b.X-a.X, b.Y-a.Y) > epsilon {
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@ -332,7 +519,10 @@ func refineIntersection(box *geo.Box, pInside, pOutside *geo.Point) *geo.Point {
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}
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func boxContains(b *geo.Box, p *geo.Point) bool {
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return p.X >= b.TopLeft.X && p.X <= b.TopLeft.X+b.Width && p.Y >= b.TopLeft.Y && p.Y <= b.TopLeft.Y+b.Height
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return p.X >= b.TopLeft.X &&
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p.X <= b.TopLeft.X+b.Width &&
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p.Y >= b.TopLeft.Y &&
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p.Y <= b.TopLeft.Y+b.Height
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}
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func boxIntersections(b *geo.Box, seg geo.Segment) []*geo.Point {
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@ -363,7 +553,8 @@ func positionLabelsIcons(obj *d2graph.Object) {
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} else {
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obj.LabelPosition = go2.Pointer(label.InsideMiddleCenter.String())
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}
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if float64(obj.LabelDimensions.Width) > obj.Width || float64(obj.LabelDimensions.Height) > obj.Height {
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if float64(obj.LabelDimensions.Width) > obj.Width ||
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float64(obj.LabelDimensions.Height) > obj.Height {
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if len(obj.ChildrenArray) > 0 {
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obj.LabelPosition = go2.Pointer(label.OutsideTopCenter.String())
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} else {
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@ -372,3 +563,4 @@ func positionLabelsIcons(obj *d2graph.Object) {
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}
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}
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}
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