[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/DemoBezierPatch01.kt
+++ b/orx-shapes/src/jvmDemo/kotlin/bezierpatch/DemoBezierPatch01.kt
@@ -0,0 +1,56 @@
+package bezierpatch
+
+import org.openrndr.application
+import org.openrndr.color.ColorRGBa
+import org.openrndr.extra.shapes.bezierpatches.bezierPatch
+import org.openrndr.shape.LineSegment
+import org.openrndr.shape.ShapeContour
+
+/**
+ * Shows how to
+ * - create a [bezierPatch] out of 4 [LineSegment]
+ * - create a sub-patch out of a [bezierPatch]
+ * - create horizontal and vertical [ShapeContour]s out of [bezierPatch]es
+ *
+ * The created contours are horizontal and vertical in "bezier-patch space" but
+ * are rendered deformed following the shape of the bezier patch.
+ */
+fun main() {
+    application {
+        configure {
+            width = 800
+            height = 800
+        }
+        program {
+            // helper to get screen locations using normalized uv values
+            fun pos(u: Double, v: Double) = drawer.bounds.position(u, v)
+            val c0 = LineSegment(pos(0.1, 0.1), pos(0.9, 0.1))
+            val c1 = LineSegment(pos(0.4, 0.3), pos(0.6, 0.4))
+            val c2 = LineSegment(pos(0.4, 0.7), pos(0.6, 0.6))
+            val c3 = LineSegment(pos(0.1, 0.9), pos(0.9, 0.9))
+
+            val bp = bezierPatch(c0.segment, c1.segment, c2.segment, c3.segment)
+            val bpSub = bp.sub(0.1, 0.1, 0.6,0.6)
+
+            extend {
+                drawer.clear(ColorRGBa.PINK)
+
+                // Show the line segments that form the bezier patch
+                drawer.stroke = ColorRGBa.YELLOW
+                drawer.strokeWeight = 5.0
+                drawer.lineSegments(listOf(c0, c1, c2, c3))
+
+                drawer.strokeWeight = 1.0
+                for (i in 0..50) {
+                    drawer.stroke = ColorRGBa.BLACK
+                    drawer.contour(bp.horizontal(i / 50.0))
+                    drawer.contour(bp.vertical(i / 50.0))
+
+                    drawer.stroke = ColorRGBa.RED
+                    drawer.contour(bpSub.horizontal(i / 50.0))
+                    drawer.contour(bpSub.vertical(i / 50.0))
+                }
+            }
+        }
+    }
+}