renames shapes -> shape utils

lib/shape-utils/circle.tsx

@@ -0,0 +1,173 @@
+import { v4 as uuid } from "uuid"
+import * as vec from "utils/vec"
+import { CircleShape, ShapeType, TransformCorner, TransformEdge } from "types"
+import { registerShapeUtils } from "./index"
+import { boundsContained } from "utils/bounds"
+import { intersectCircleBounds } from "utils/intersections"
+import { pointInCircle } from "utils/hitTests"
+import { getTransformAnchor, translateBounds } from "utils/utils"
+
+const circle = registerShapeUtils<CircleShape>({
+  boundsCache: new WeakMap([]),
+
+  create(props) {
+    return {
+      id: uuid(),
+      type: ShapeType.Circle,
+      isGenerated: false,
+      name: "Circle",
+      parentId: "page0",
+      childIndex: 0,
+      point: [0, 0],
+      rotation: 0,
+      radius: 20,
+      style: {
+        fill: "#c6cacb",
+        stroke: "#000",
+      },
+      ...props,
+    }
+  },
+
+  render({ id, radius }) {
+    return <circle id={id} cx={radius} cy={radius} r={radius} />
+  },
+
+  getBounds(shape) {
+    if (!this.boundsCache.has(shape)) {
+      const { radius } = shape
+
+      const bounds = {
+        minX: 0,
+        maxX: radius * 2,
+        minY: 0,
+        maxY: radius * 2,
+        width: radius * 2,
+        height: radius * 2,
+      }
+
+      this.boundsCache.set(shape, bounds)
+    }
+
+    return translateBounds(this.boundsCache.get(shape), shape.point)
+  },
+
+  getRotatedBounds(shape) {
+    return this.getBounds(shape)
+  },
+
+  getCenter(shape) {
+    return [shape.point[0] + shape.radius, shape.point[1] + shape.radius]
+  },
+
+  hitTest(shape, point) {
+    return pointInCircle(
+      point,
+      vec.addScalar(shape.point, shape.radius),
+      shape.radius
+    )
+  },
+
+  hitTestBounds(shape, bounds) {
+    const shapeBounds = this.getBounds(shape)
+
+    return (
+      boundsContained(shapeBounds, bounds) ||
+      intersectCircleBounds(
+        vec.addScalar(shape.point, shape.radius),
+        shape.radius,
+        bounds
+      ).length > 0
+    )
+  },
+
+  rotate(shape) {
+    return shape
+  },
+
+  translate(shape, delta) {
+    shape.point = vec.add(shape.point, delta)
+    return shape
+  },
+
+  scale(shape, scale) {
+    return shape
+  },
+
+  transform(shape, bounds, { type, initialShape, scaleX, scaleY }) {
+    const anchor = getTransformAnchor(type, scaleX < 0, scaleY < 0)
+
+    // Set the new corner or position depending on the anchor
+    switch (anchor) {
+      case TransformCorner.TopLeft: {
+        shape.radius = Math.min(bounds.width, bounds.height) / 2
+        shape.point = [
+          bounds.maxX - shape.radius * 2,
+          bounds.maxY - shape.radius * 2,
+        ]
+        break
+      }
+      case TransformCorner.TopRight: {
+        shape.radius = Math.min(bounds.width, bounds.height) / 2
+        shape.point = [bounds.minX, bounds.maxY - shape.radius * 2]
+        break
+      }
+      case TransformCorner.BottomRight: {
+        shape.radius = Math.min(bounds.width, bounds.height) / 2
+        shape.point = [
+          bounds.maxX - shape.radius * 2,
+          bounds.maxY - shape.radius * 2,
+        ]
+        break
+        break
+      }
+      case TransformCorner.BottomLeft: {
+        shape.radius = Math.min(bounds.width, bounds.height) / 2
+        shape.point = [bounds.maxX - shape.radius * 2, bounds.minY]
+        break
+      }
+      case TransformEdge.Top: {
+        shape.radius = bounds.height / 2
+        shape.point = [
+          bounds.minX + (bounds.width / 2 - shape.radius),
+          bounds.minY,
+        ]
+        break
+      }
+      case TransformEdge.Right: {
+        shape.radius = bounds.width / 2
+        shape.point = [
+          bounds.maxX - shape.radius * 2,
+          bounds.minY + (bounds.height / 2 - shape.radius),
+        ]
+        break
+      }
+      case TransformEdge.Bottom: {
+        shape.radius = bounds.height / 2
+        shape.point = [
+          bounds.minX + (bounds.width / 2 - shape.radius),
+          bounds.maxY - shape.radius * 2,
+        ]
+        break
+      }
+      case TransformEdge.Left: {
+        shape.radius = bounds.width / 2
+        shape.point = [
+          bounds.minX,
+          bounds.minY + (bounds.height / 2 - shape.radius),
+        ]
+        break
+      }
+    }
+
+    return shape
+  },
+
+  transformSingle(shape, bounds, info) {
+    return this.transform(shape, bounds, info)
+  },
+
+  canTransform: true,
+})
+
+export default circle