[orx-shapes] Refactor package layout

2024-01-23 09:38:43 +01:00
parent 78ba51ca85
commit 8fbb106823
54 changed files with 138 additions and 91 deletions
--- a/orx-shapes/src/commonMain/kotlin/primitives/Pulley.kt
+++ b/orx-shapes/src/commonMain/kotlin/primitives/Pulley.kt
@@ -0,0 +1,50 @@
+package org.openrndr.extra.shapes.primitives
+
+import org.openrndr.math.LinearType
+import org.openrndr.math.Polar
+import org.openrndr.shape.Circle
+import org.openrndr.shape.LineSegment
+import org.openrndr.shape.ShapeContour
+
+class Pulley(val circle0: Circle, val circle1: Circle) : LinearType<Pulley> {
+    override fun div(scale: Double): Pulley {
+        return Pulley(circle0 / scale, circle1 / scale)
+    }
+
+    override fun times(scale: Double): Pulley {
+        return Pulley(circle0 * scale, circle1 * scale)
+    }
+
+    override fun plus(right: Pulley): Pulley {
+        return Pulley(circle0 + right.circle0, circle1 + right.circle1)
+    }
+
+    override fun minus(right: Pulley): Pulley {
+        return Pulley(circle0 - right.circle0, circle1 - right.circle1)
+    }
+
+    val contour: ShapeContour
+        get() {
+            val tangents = circle0.tangents(circle1)
+            if (tangents.isEmpty()) {
+                return ShapeContour.EMPTY
+            } else {
+                var k = LineSegment(tangents[0].first, tangents[0].second).contour
+
+                run {
+                    var th0 = Polar.fromVector(tangents[0].second - circle1.center).theta
+                    val th1 = Polar.fromVector(tangents[1].second - circle1.center).theta
+                    if (th0 < th1) th0 += 360.0
+                    k += Arc(circle1.center, circle1.radius, th0, th1).contour
+                }
+                k += LineSegment(tangents[1].first, tangents[1].second).contour.reversed
+                run {
+                    val th0 = Polar.fromVector(tangents[0].first - circle0.center).theta
+                    var th1 = Polar.fromVector(tangents[1].first - circle0.center).theta
+                    if (th0 > th1) th1 += 360.0
+                    k += Arc(circle0.center, circle0.radius, th0, th1).contour.reversed
+                }
+                return k.close()
+            }
+        }
+}