[orx-fx] convert to MPP

orx-fx/src/commonMain/kotlin/blur/HashBlur.kt

@@ -0,0 +1,41 @@
+package org.openrndr.extra.fx.blur
+
+import org.openrndr.draw.Filter
+import org.openrndr.extra.fx.fx_hash_blur
+import org.openrndr.extra.fx.mppFilterShader
+import org.openrndr.extra.parameters.Description
+import org.openrndr.extra.parameters.DoubleParameter
+import org.openrndr.extra.parameters.IntParameter
+
+@Description("Hash blur")
+class HashBlur : Filter(mppFilterShader(fx_hash_blur, "hash-blur")) {
+    /**
+     * Blur radius in pixels, default is 5.0
+     */
+    @DoubleParameter("blur radius", 1.0, 25.0)
+    var radius: Double by parameters
+
+    /**
+     * Time/seed, this should be fed with seconds, default is 0.0
+     */
+    var time: Double by parameters
+
+    /**
+     * Number of samples, default is 30
+     */
+    @IntParameter("number of samples", 1, 100)
+    var samples: Int by parameters
+
+    /**
+     * Post-blur gain, default is 1.0
+     */
+    @DoubleParameter("image gain", 0.0, 2.0)
+    var gain: Double by parameters
+
+    init {
+        radius = 5.0
+        time = 0.0
+        samples = 30
+        gain = 1.0
+    }
+}