antenna example

demo/playground/src/jvmMain/kotlin/antenna.kt

@@ -0,0 +1,43 @@
+package space.kscience.visionforge.examples
+
+import space.kscience.kmath.complex.Quaternion
+import space.kscience.kmath.geometry.RotationOrder
+import space.kscience.kmath.geometry.degrees
+import space.kscience.kmath.geometry.fromEuler
+import space.kscience.visionforge.html.ResourceLocation
+import space.kscience.visionforge.solid.*
+import kotlin.math.PI
+
+fun main() = makeVisionFile(resourceLocation = ResourceLocation.SYSTEM) {
+
+    val direction = Quaternion.fromEuler( 45.degrees, 45.degrees, 0.degrees, RotationOrder.XYZ)
+
+    vision("canvas") {
+        requirePlugin(Solids)
+        solid {
+            rotationX = -PI / 2
+            rotationZ = PI
+            axes(200)
+            ambientLight()
+            cylinder(50, 5, name = "base")
+            solidGroup("frame") {
+                rotationY = PI/2
+                rotationX = -PI/2
+                rotationZ = -PI/2
+                z = 60
+                axes(200)
+                solidGroup("antenna") {
+                    tube(40, 10, 30)
+                    sphereLayer(100, 95, theta = PI / 6) {
+                        z = 100
+                        rotationX = -PI / 2
+                    }
+                    cylinder(5, 30) {
+                        z = 15
+                    }
+                    this.quaternion = direction
+                }
+            }
+        }
+    }
+}