[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/jvmDemo/kotlin/bezierpatch/DemoBezierPatch04.kt
+++ b/orx-shapes/src/jvmDemo/kotlin/bezierpatch/DemoBezierPatch04.kt
@@ -0,0 +1,46 @@
+package bezierpatch
+
+import org.openrndr.application
+import org.openrndr.color.ColorRGBa
+import org.openrndr.extra.shapes.bezierpatches.bezierPatch
+import org.openrndr.shape.Circle
+
+/**
+ * Shows how to get positions and gradient values of those positions
+ * from a [bezierPatch]
+ *
+ * You can think of bezierPatch.position() as requesting points
+ * in a wavy flag (the bezier patch) using normalized uv coordinates.
+ */
+fun main() {
+    application {
+        configure {
+            width = 800
+            height = 800
+        }
+        program {
+            val bp = bezierPatch(
+                Circle(drawer.bounds.center, 350.0).contour
+                //Rectangle.fromCenter(drawer.bounds.center, 550.0).contour
+            )
+
+            extend {
+                drawer.clear(ColorRGBa.PINK)
+                drawer.stroke = ColorRGBa.BLACK
+
+                for (j in 1 until 50 step 2) {
+                    for (i in 1 until 50 step 2) {
+                        val u = i / 50.0
+                        val v = j / 50.0
+                        val pos = bp.position(u, v)
+                        val grad = bp.gradient(u, v).normalized * 10.0
+                        val perpendicular = grad.perpendicular()
+                        drawer.lineSegment(pos - grad, pos + grad)
+                        drawer.lineSegment(pos - perpendicular, pos + perpendicular)
+                        //drawer.circle(pos + grad, 3.0)
+                    }
+                }
+            }
+        }
+    }
+}