Add PerspectivePlane distortion filter

orx-fx/src/main/kotlin/distort/Raycast.kt

@@ -0,0 +1,60 @@
+package org.openrndr.extra.fx.distort
+
+import org.openrndr.draw.*
+import org.openrndr.extra.fx.filterFragmentCode
+import org.openrndr.extra.parameters.BooleanParameter
+import org.openrndr.extra.parameters.Description
+import org.openrndr.extra.parameters.DoubleParameter
+import org.openrndr.math.Vector3
+import org.openrndr.math.transforms.transform
+
+@Description("Perspective plane")
+class PerspectivePlane : Filter(Shader.createFromCode(filterVertexCode, filterFragmentCode("distort/perspective-plane.frag"))) {
+
+//    @DoubleParameter("camera x", -1.0, 1.0, order = 0)
+    var cameraX : Double = 0.0
+//    @DoubleParameter("camera y", -1.0, 1.0, order = 1)
+    var cameraY : Double = 0.0
+//    @DoubleParameter("camera z", -1.0, 1.0, order = 2)
+    var cameraZ : Double = 1.0
+
+
+    @DoubleParameter("plane x", -1.0, 1.0, order = 3)
+    var planeX : Double = 0.0
+    @DoubleParameter("plane y", -1.0, 1.0, order = 4)
+    var planeY : Double = 0.0
+    @DoubleParameter("plane z", -1.0, 1.0, order = 5)
+    var planeZ : Double = 0.5
+
+    @DoubleParameter("plane yaw", -180.0, 180.0, order = 6)
+    var planeYaw : Double = 0.0
+    @DoubleParameter("plane pitch", -180.0, 180.0, order = 7)
+    var planePitch : Double = 0.0
+    @DoubleParameter("plane roll", -180.0, 180.0, order = 8)
+    var planeRoll : Double = 0.0
+
+
+    @BooleanParameter("tile input")
+    var tile: Boolean by parameters
+
+    var seconds:Double by parameters
+    init {
+        seconds = 0.0
+        tile = false
+    }
+
+    override fun apply(source: Array<ColorBuffer>, target: Array<ColorBuffer>) {
+        source[0].generateMipmaps()
+        source[0].filter(MinifyingFilter.LINEAR_MIPMAP_LINEAR, MagnifyingFilter.LINEAR)
+        source[0].wrapU = WrapMode.REPEAT
+        source[0].wrapV = WrapMode.REPEAT
+        parameters["cameraPosition"] = Vector3(cameraX, cameraY, cameraZ)
+        parameters["planePosition"] = Vector3(planeX, planeY, planeZ)
+        parameters["planeMatrix"] = transform {
+            rotate(Vector3.UNIT_X, planePitch)
+            rotate(Vector3.UNIT_Y, planeYaw)
+            rotate(Vector3.UNIT_Z, planeRoll)
+        }
+        super.apply(source, target)
+    }
+}