[orx-quadtree] add quadtree module (#174)

2021-02-26 17:51:03 +01:00
parent 8d6b82a24e
commit 5b0a6f37e0
7 changed files with 395 additions and 1 deletions
--- a/orx-quadtree/src/demo/kotlin/DemoQuadTree01.kt
+++ b/orx-quadtree/src/demo/kotlin/DemoQuadTree01.kt
@@ -0,0 +1,55 @@
+import org.openrndr.application
+import org.openrndr.color.ColorRGBa
+import org.openrndr.draw.rectangleBatch
+import org.openrndr.extensions.SingleScreenshot
+import org.openrndr.extra.noise.Random
+import org.openrndr.extra.noise.gaussian
+import org.openrndr.math.Vector2
+import org.openrndr.shape.Rectangle
+import quadtree.Quadtree
+
+fun main() {
+    application {
+        configure {
+            width = 800
+            height = 800
+            title = "QuadTree"
+        }
+        program {
+            if (System.getProperty("takeScreenshot") == "true") {
+                extend(SingleScreenshot()) {
+                    this.outputFile = System.getProperty("screenshotPath")
+                }
+            }
+
+            val box = Rectangle.fromCenter(Vector2(400.0), 750.0)
+
+            val points = (0 until 1_000).map {
+                Vector2.gaussian(box.center, Vector2(95.0), Random.rnd)
+            }
+
+            val quadTree = Quadtree<Vector2>(box) { it }
+
+            for (point in points) {
+                quadTree.insert(point)
+            }
+
+            val batch = drawer.rectangleBatch {
+                this.fill = null
+                this.stroke = ColorRGBa.GRAY
+                this.strokeWeight = 0.5
+                quadTree.batch(this)
+            }
+
+            extend {
+                drawer.clear(ColorRGBa.BLACK)
+
+                drawer.rectangles(batch)
+
+                drawer.fill = ColorRGBa.PINK.opacify(0.7)
+                drawer.stroke = null
+                drawer.circles(points, 5.0)
+            }
+        }
+    }
+}