[orx-composition] Add test and demo for PR#360

2025-07-13 11:59:44 +02:00
parent 37442f018e
commit e2fa39af08
2 changed files with 93 additions and 1 deletions
--- a/openrndr-demos/src/demo/kotlin/DemoClipping.kt
+++ b/openrndr-demos/src/demo/kotlin/DemoClipping.kt
@@ -0,0 +1,43 @@
+import org.openrndr.application
+import org.openrndr.color.ColorRGBa
+import org.openrndr.extra.composition.ClipMode
+import org.openrndr.extra.composition.composition
+import org.openrndr.extra.composition.drawComposition
+import org.openrndr.math.Vector2
+import org.openrndr.shape.Circle
+import org.openrndr.shape.LineSegment
+import org.openrndr.shape.Shape
+
+fun main() = application {
+    program {
+        val outline = Shape(
+            listOf(
+                Circle(drawer.bounds.center, 70.0).contour.reversed,
+                Circle(drawer.bounds.center, 100.0).contour,
+            )
+        )
+
+        val radius = outline.bounds.dimensions.length / 2
+        val off = outline.bounds.center
+        val num = radius.toInt()
+
+        val svg = drawComposition {
+            lineSegments(List(num) { segNum ->
+                val yNorm = (segNum / (num - 1.0))
+                val x = ((segNum % 2) * 2.0 - 1.0) * radius
+                val y = (yNorm * 2.0 - 1.0) * radius
+                val start = Vector2(-x, y) + off
+                val end = Vector2(x, y) + off
+                LineSegment(start, end)
+            })
+            clipMode = ClipMode.INTERSECT
+            shape(outline)
+        }
+        extend {
+            drawer.clear(ColorRGBa.PINK)
+            drawer.fill = null
+            drawer.shape(outline)
+            drawer.composition(svg)
+        }
+    }
+}