public void Bounds_ReturnsVerticesBoundingBox()
{
var bbox = VectorUtils.Bounds(new Vector2[] { Vector2.zero, Vector2.right, Vector2.one });
Assert.AreEqual(Vector2.zero, bbox.min);
Assert.AreEqual(Vector2.one, bbox.max);
}
/// <summary>
/// Build a 2D bounding box for the shape.
/// </summary>
protected override void GenerateBounds()
{
// TO DO
// http://www.iquilezles.org/www/articles/bezierbbox/bezierbbox.htm
int bezierSteps = VectorShapeUtils.bezierSteps;
List <Vector2> pointList = new List <Vector2>();
float step = 1f / bezierSteps;
for (int i = 0; i < vertices.Length; i++)
{
Vertex vert = vertices[i];
pointList.Add(vert.position);
if (vert.segmentCurves)
{
Vertex vertNext = vertices[NextIndex(i)];
float t = step;
for (int j = 1; j < bezierSteps; j++)
{
pointList.Add(VectorShapeUtils.EvaluateCubicCurve(vert.position, vert.exitCP, vertNext.enterCP, vertNext.position, t));
t += step;
}
}
}
shapeBounds = VectorUtils.Bounds(pointList);
boundsDirty = false;
}
public void Bounds_ComputesBezierPathBounds()
{
var path = VectorUtils.MakeArc(Vector2.zero, 0.0f, Mathf.PI / 2, 1.0f);
var bbox = VectorUtils.Bounds(path);
Assert.AreEqual(0.0f, bbox.min.x, VectorUtils.Epsilon);
Assert.AreEqual(0.0f, bbox.min.y, VectorUtils.Epsilon);
Assert.AreEqual(1.0f, bbox.max.x, VectorUtils.Epsilon);
Assert.AreEqual(1.0f, bbox.max.y, VectorUtils.Epsilon);
}
public static Rect CalcBounds(string svg)
{
using (var reader = new StringReader(svg))
{
var sceneInfo = SVGParser.ImportSVG(reader, ViewportOptions.DontPreserve);
var tessOptions = SvgToPng.TessellationOptions;
var geometry = VectorUtils.TessellateScene(sceneInfo.Scene, tessOptions, sceneInfo.NodeOpacity);
var vertices = geometry.SelectMany(geom => geom.Vertices.Select(x => (geom.WorldTransform * x))).ToArray();
var bounds = VectorUtils.Bounds(vertices);
return(bounds);
}
}
private static VectorShape TryParseShapeToCircle(Shape shape, Matrix2D transform)
{
if (shape.Contours.Length > 1)
{
return(null);
}
BezierContour contour = shape.Contours[0];
if (contour.Segments.Length < 5)
{
return(null);
}
if (!contour.Closed)
{
return(null);
}
BezierSegment[] segments = new BezierSegment[contour.Segments.Length - 1];
for (int i = 0; i < segments.Length; i++)
{
segments[i].P0 = transform.MultiplyPoint(contour.Segments[i].P0);
segments[i].P1 = transform.MultiplyPoint(contour.Segments[i].P1);
segments[i].P2 = transform.MultiplyPoint(contour.Segments[i].P2);
segments[i].P3 = transform.MultiplyPoint(contour.Segments[(i + 1)].P0);
}
Rect shapeBounds = VectorUtils.Bounds(VectorUtils.BezierSegmentsToPath(segments));
Vector2 center = shapeBounds.center;
float radius = (shapeBounds.width + shapeBounds.height) / 4f;
float error = radius / 200f;
for (int i = 0; i < segments.Length; i++)
{
if (Mathf.Abs(Vector2.Distance(center, segments[i].P0) - radius) > error)
{
return(null);
}
Vector2 midpoint = VectorUtils.Eval(segments[i], 0.5f);
if (Mathf.Abs(Vector2.Distance(center, midpoint) - radius) > error)
{
return(null);
}
}
CircleShape circle = new CircleShape(center, radius);
circle.colorOutline = Color.red;
return(circle);
}
List <Vector2[]> ISpritePhysicsOutlineDataProvider.GetOutlines(GUID guid)
{
if (GetSVGSpriteData().PhysicsOutlines.Count == 0)
{
// If no physics outline was set in the Sprite Editor, show the sprite's physics shape directly (if any)
var sprite = GetSprite();
if (sprite == null)
{
return(null);
}
var importer = GetImporter();
int width;
int height;
importer.TextureSizeForSpriteEditor(sprite, out width, out height);
var size = new Vector2(width, height);
var offset = new Vector2(-width / 2.0f, -height / 2.0f);
var storedShapes = new List <Vector2[]>(sprite.GetPhysicsShapeCount());
var shape = new List <Vector2>();
for (int i = 0; i < sprite.GetPhysicsShapeCount(); ++i)
{
shape.Clear();
sprite.GetPhysicsShape(i, shape);
var bounds = VectorUtils.Bounds(shape);
for (int j = 0; j < shape.Count; ++j)
{
var p = shape[j];
p -= bounds.min;
p /= bounds.size;
p *= size;
p += offset;
shape[j] = p;
}
storedShapes.Add(shape.ToArray());
}
return(storedShapes);
}
return(GetSVGSpriteData().PhysicsOutlines.Select(x => x.Vertices.ToArray()).ToList());
}
private static Sprite SpriteFromGeometry(List <VectorUtils.Geometry> geoms)
{
var vertices = new List <Vector2>();
var indices = new List <UInt16>();
var colors = new List <Color>();
foreach (var geom in geoms)
{
if (geom.Indices.Length == 0)
{
continue;
}
indices.AddRange(geom.Indices.Select(x => (UInt16)(x + vertices.Count)));
vertices.AddRange(geom.Vertices.Select(x => geom.WorldTransform * x));
colors.AddRange(Enumerable.Repeat(geom.Color, geom.Vertices.Length));
}
var bbox = VectorUtils.Bounds(vertices);
VectorUtils.RealignVerticesInBounds(vertices, bbox, true);
var rect = new Rect(0, 0, bbox.width, bbox.height);
// The Sprite.Create(Rect, Vector2, float, Texture2D) method is internal. Using reflection
// until it becomes public.
var spriteCreateMethod = typeof(Sprite).GetMethod("Create", BindingFlags.Static | BindingFlags.NonPublic, Type.DefaultBinder, new Type[] { typeof(Rect), typeof(Vector2), typeof(float), typeof(Texture2D) }, null);
var sprite = spriteCreateMethod.Invoke(null, new object[] { rect, Vector2.zero, 100.0f, null }) as Sprite;
sprite.OverrideGeometry(vertices.ToArray(), indices.ToArray());
var colors32 = colors.Select(c => (Color32)c);
using (var nativeColors = new NativeArray <Color32>(colors32.ToArray(), Allocator.Temp))
sprite.SetVertexAttribute <Color32>(VertexAttribute.Color, nativeColors);
return(sprite);
}
/// <summary>
/// Build a 2D bounding box for the shape.
/// </summary>
protected override void GenerateBounds()
{
List <Vector2> pointList = new List <Vector2>();
float step = 1f / bezierSteps;
for (int i = 0; i < vertices.Length; i++)
{
Vertex vert = vertices[i];
pointList.Add(vert.position);
if (vert.segmentCurves)
{
Vertex vertNext = vertices[NextIndex(i)];
float t = step;
for (int j = 1; j < bezierSteps; j++)
{
pointList.Add(EvaluateCubicCurve(vert.position, vert.exitCP, vertNext.enterCP, vertNext.position, t));
t += step;
}
}
}
shapeBounds = VectorUtils.Bounds(pointList);
}
public Rect CalcSize(XdObjectJson xdObject)
{
var position = Vector2.zero;
var size = new Vector2(xdObject.Shape.Width, xdObject.Shape.Height);
var scaleBehavior = xdObject.Style?.Fill?.Pattern?.Meta?.Ux?.ScaleBehavior ?? "fill";
var spriteUid = xdObject.Style?.Fill?.Pattern?.Meta?.Ux?.Uid;
var shapeType = xdObject.Shape?.Type;
if (!string.IsNullOrWhiteSpace(spriteUid))
{
// nothing
}
else if (SvgUtil.Types.Contains(shapeType))
{
var svg = SvgUtil.CreateSvg(xdObject);
using (var reader = new StringReader(svg))
{
var sceneInfo = SVGParser.ImportSVG(reader, ViewportOptions.DontPreserve);
var tessOptions = SvgToPng.TessellationOptions;
var geometry = VectorUtils.TessellateScene(sceneInfo.Scene, tessOptions, sceneInfo.NodeOpacity);
var vertices = geometry.SelectMany(geom => geom.Vertices.Select(x => (geom.WorldTransform * x))).ToArray();
var bounds = VectorUtils.Bounds(vertices);
if (bounds.width > 0.0001f && bounds.height > 0.0001f)
{
size = new Vector2(bounds.width, bounds.height);
position = new Vector2(bounds.x, bounds.y);
}
}
}
if (scaleBehavior == "cover" && size.x > 0.0001f && size.y > 0.0001f)
{
var imageWidth = xdObject.Style?.Fill?.Pattern?.Width ?? 0f;
var imageHeight = xdObject.Style?.Fill?.Pattern?.Height ?? 0f;
var imageSize = new Vector2(imageWidth, imageHeight);
var imageAspect = imageSize.x / imageSize.y;
var instanceAspect = size.x / size.y;
var offsetX = xdObject.Style?.Fill?.Pattern?.Meta?.Ux?.OffsetX ?? 0f;
var offsetY = xdObject.Style?.Fill?.Pattern?.Meta?.Ux?.OffsetY ?? 0f;
var scale = xdObject.Style?.Fill?.Pattern?.Meta?.Ux?.Scale ?? 1.0f;
if (imageAspect > instanceAspect)
{
var prev = size.x;
size.x = size.y * (imageSize.x / imageSize.y);
position.x -= (size.x - prev) / 2f;
position.x += offsetX * xdObject.Shape.Width * imageAspect / instanceAspect;
position.y += offsetY * xdObject.Shape.Height;
}
else
{
var prev = size.y;
size.y = size.x * (imageSize.y / imageSize.x);
position.y -= (size.y - prev) / 2f;
position.x += offsetX * xdObject.Shape.Width;
position.y += offsetY * xdObject.Shape.Height * imageAspect / instanceAspect;
}
{
var prev = size;
size *= scale;
position -= (size - prev) / 2f;
}
}
return(new Rect(position, size));
}