Bump to OPENRNDR 0.3.44-rc.7, add intersection demos

2020-07-29 12:01:23 +02:00
parent dd9a0b351a
commit 6060ebffcd
4 changed files with 111 additions and 1 deletions
--- a/openrndr-demos/src/demo/kotlin/DemoContourIntersections01.kt
+++ b/openrndr-demos/src/demo/kotlin/DemoContourIntersections01.kt
@@ -0,0 +1,37 @@
+import org.openrndr.application
+import org.openrndr.color.ColorRGBa
+import org.openrndr.shape.Ellipse
+import org.openrndr.shape.OrientedEllipse
+import org.openrndr.shape.intersections
+
+fun main() {
+    application {
+        program {
+            val c1 = Ellipse(width / 2.0, height / 2.0, 200.0, 100.0).contour
+            extend {
+                drawer.clear(ColorRGBa.PINK)
+                drawer.fill = null
+                val c2 = OrientedEllipse(mouse.position, 100.0, 200.0, seconds*45.0).contour
+                drawer.contour(c1)
+                //drawer.contour(c2)
+                val ints = intersections(c1, c2)
+
+                if (ints.isEmpty()) {
+                    drawer.contour(c2)
+                } else {
+                    (ints + ints.take(1)).map { it.contourTB }.zipWithNext().forEach {
+                        val end = if (it.second <= it.first) it.second + 1.0 else it.second
+                        val sub = c2.sub(it.first, end)
+                        val l = sub.length
+                        val ta = sub.tForLength(15.0)
+                        val tb = sub.tForLength(l - 15.0)
+                        drawer.contour(sub.sub(ta, tb))
+                    }
+                }
+                for (i in ints) {
+                    drawer.circle(i.position, 15.0)
+                }
+            }
+        }
+    }
+}