[orx-fx] convert to MPP

orx-fx/src/commonMain/kotlin/dither/ADither.kt

@@ -0,0 +1,21 @@
+package org.openrndr.extra.fx.dither
+
+import org.openrndr.draw.Filter
+import org.openrndr.extra.fx.fx_a_dither
+import org.openrndr.extra.fx.mppFilterShader
+import org.openrndr.extra.parameters.Description
+import org.openrndr.extra.parameters.IntParameter
+
+@Description("ADither")
+class ADither: Filter(mppFilterShader(fx_a_dither, "a-dither")) {
+    @IntParameter("pattern index", 0, 3)
+    var pattern: Int by parameters
+
+    @IntParameter("levels", 1, 64)
+    var levels: Int by parameters
+
+    init {
+        levels = 4
+        pattern = 3
+    }
+}

orx-fx/src/commonMain/kotlin/dither/CMYKHalftone.kt

@@ -0,0 +1,25 @@
+package org.openrndr.extra.fx.dither
+
+import org.openrndr.draw.Filter
+import org.openrndr.extra.fx.fx_cmyk_halftone
+import org.openrndr.extra.fx.mppFilterShader
+import org.openrndr.extra.parameters.Description
+import org.openrndr.extra.parameters.DoubleParameter
+
+@Description("CMYK Halftone")
+class CMYKHalftone: Filter(mppFilterShader(fx_cmyk_halftone, "cmyk-halftone")) {
+    @DoubleParameter("scale", 1.0, 30.0, precision = 4)
+    var scale: Double by parameters
+
+    @DoubleParameter("dotSize", 1.0, 3.0, precision = 4)
+    var dotSize: Double by parameters
+
+    @DoubleParameter("rotation", -180.0, 180.0)
+    var rotation: Double by parameters
+
+    init {
+        scale = 3.0
+        rotation = 0.0
+        dotSize = 1.0
+    }
+}

orx-fx/src/commonMain/kotlin/dither/Crosshatch.kt

@@ -0,0 +1,29 @@
+package org.openrndr.extra.fx.dither
+
+import org.openrndr.draw.Filter
+import org.openrndr.extra.fx.fx_crosshatch
+import org.openrndr.extra.fx.mppFilterShader
+import org.openrndr.extra.parameters.Description
+import org.openrndr.extra.parameters.DoubleParameter
+
+@Description("Crosshatch")
+class Crosshatch : Filter(mppFilterShader(fx_crosshatch, "crosshatch")) {
+    @DoubleParameter("threshold 1", 0.0, 1.0)
+    var t1: Double by parameters
+
+    @DoubleParameter("threshold 2", 0.0, 1.0)
+    var t2: Double by parameters
+
+    @DoubleParameter("threshold 3", 0.0, 1.0)
+    var t3: Double by parameters
+
+    @DoubleParameter("threshold 4", 0.0, 1.0)
+    var t4: Double by parameters
+
+    init {
+        t1 = 1.0
+        t2 = 0.75
+        t3 = 0.5
+        t4 = 0.3
+    }
+}