[orx-shapes] Add WIP ContourAdjuster framework

2023-10-23 12:27:45 +02:00
parent 7f41c263a7
commit e7f8add84e
17 changed files with 940 additions and 0 deletions
--- a/orx-shapes/src/commonMain/kotlin/adjust/ContourAdjusterEdge.kt
+++ b/orx-shapes/src/commonMain/kotlin/adjust/ContourAdjusterEdge.kt
@@ -0,0 +1,73 @@
+package org.openrndr.extra.shapes.adjust
+
+import org.openrndr.math.Vector2
+
+data class ContourAdjusterEdge(val contourAdjuster: ContourAdjuster, val segmentIndex: Int) {
+
+    /**
+     * A [ContourAdjusterVertex] interface for the start-vertex of the edge
+     */
+    val start
+        get() = ContourAdjusterVertex(contourAdjuster, segmentIndex)
+
+    /**
+     * A [ContourAdjusterVertex] interface for the end-vertex of the edge
+     */
+    val end
+        get() = ContourAdjusterVertex(contourAdjuster, (segmentIndex + 1).mod(contourAdjuster.contour.segments.size))
+
+    /**
+     * A link to the edge before this edge
+     */
+    val previous: ContourAdjusterEdge?
+        get() = if (contourAdjuster.contour.closed) {
+            this.copy(segmentIndex = (segmentIndex - 1).mod(contourAdjuster.contour.segments.size))
+        } else {
+            if (segmentIndex > 0) {
+                this.copy(segmentIndex = segmentIndex - 1)
+            } else {
+                null
+            }
+        }
+
+    /**
+     * A link to the edge after this edge
+     */
+    val next: ContourAdjusterEdge?
+        get() = if (contourAdjuster.contour.closed) {
+            this.copy(segmentIndex = (segmentIndex + 1).mod(contourAdjuster.contour.segments.size))
+        } else {
+            if (segmentIndex < contourAdjuster.contour.segments.size - 1) {
+                this.copy(segmentIndex = segmentIndex + 1)
+            } else {
+                null
+            }
+        }
+
+    fun select() {
+        contourAdjuster.selectEdge(segmentIndex)
+    }
+    private fun wrap(block: ContourEdge.() -> ContourEdge) {
+        val newEdge =  ContourEdge(contourAdjuster.contour, segmentIndex).block()
+        contourAdjuster.contour = newEdge.contour
+        contourAdjuster.updateSelection(newEdge.adjustments)
+    }
+    fun toCubic() = wrap { toCubic() }
+    fun splitAt(t: Double) = wrap { splitAt(t) }
+    fun moveBy(translation: Vector2, updateTangents: Boolean = true) = wrap { movedBy(translation, updateTangents) }
+    fun rotate(rotationInDegrees: Double, anchorT: Double = 0.5, updateTangents: Boolean = true) =
+        wrap { rotatedBy(rotationInDegrees, anchorT, updateTangents) }
+    fun scale(scaleFactor: Double, anchorT: Double = 0.5, updateTangents: Boolean = true) =
+        wrap { scaledBy(scaleFactor, anchorT, updateTangents = true) }
+
+    fun replaceWith(t:Double, updateTangents: Boolean = true) {
+        wrap { replacedWith(t, updateTangents) }
+    }
+
+    fun sub(t0:Double, t1: Double, updateTangents: Boolean = true) {
+        contourAdjuster.contour =
+            ContourEdge(contourAdjuster.contour, segmentIndex)
+                .subbed(t0, t1)
+                .contour
+    }
+}