[orx-fx] Add PolarToRectangular, RectangularToPolar and LineBlur

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

@@ -49,6 +49,8 @@ class BoxBlur : Filter(mppFilterShader(fx_box_blur,"box-blur")) {
             colorBuffer(target[0].width, target[0].height, target[0].contentScale, target[0].format, target[0].type)
         }
 
+        parameters["wrapX"] = false
+        parameters["wrapY"] = false
         intermediate.let {
             parameters["blurDirection"] = Vector2(1.0, 0.0)
             super.apply(source, arrayOf(it))

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

@@ -0,0 +1,65 @@
+package org.openrndr.extra.fx.blur
+
+import org.openrndr.draw.*
+import org.openrndr.extra.fx.fx_box_blur
+import org.openrndr.extra.fx.mppFilterShader
+import org.openrndr.extra.parameters.BooleanParameter
+import org.openrndr.extra.parameters.Description
+import org.openrndr.extra.parameters.DoubleParameter
+import org.openrndr.extra.parameters.IntParameter
+
+import org.openrndr.math.Vector2
+import org.openrndr.math.asRadians
+import kotlin.math.cos
+import kotlin.math.sin
+
+/**
+ * BoxBlur implemented as a separable filter
+ */
+@Description("Box-blur")
+class LineBlur : Filter(mppFilterShader(fx_box_blur, "line-blur")) {
+
+    /**
+     * The sample window, default is 5
+     */
+    @IntParameter("window size", 1, 25)
+    var window: Int by parameters
+
+    /**
+     * Spread multiplier, default is 1.0
+     */
+    @DoubleParameter("kernel spread", 1.0, 4.0)
+    var spread: Double by parameters
+
+    /**
+     * Post-blur gain, default is 1.0
+     */
+    @DoubleParameter("gain", 0.0, 4.0)
+    var gain: Double by parameters
+
+
+    @DoubleParameter("blur angle", -180.0, 180.0)
+    var blurAngle: Double by parameters
+
+    @BooleanParameter("wrap x", order = 9)
+    var wrapX: Boolean by parameters
+
+    @BooleanParameter("wrap y", order = 10)
+    var wrapY: Boolean by parameters
+
+
+
+    init {
+        window = 5
+        spread = 1.0
+        gain = 1.0
+        blurAngle = 0.0
+        wrapX = false
+        wrapY = false
+    }
+
+    override fun apply(source: Array<ColorBuffer>, target: Array<ColorBuffer>) {
+        parameters["blurDirection"] = Vector2(cos(blurAngle.asRadians), sin(blurAngle.asRadians))
+        super.apply(source, target)
+    }
+}

orx-fx/src/commonMain/kotlin/distort/PolarToRectangular.kt

@@ -0,0 +1,23 @@
+package org.openrndr.extra.fx.distort
+
+import org.openrndr.draw.ColorBuffer
+import org.openrndr.draw.Filter
+import org.openrndr.draw.MagnifyingFilter
+import org.openrndr.draw.MinifyingFilter
+import org.openrndr.extra.fx.fx_polar_to_rectangular
+import org.openrndr.extra.fx.mppFilterShader
+import org.openrndr.extra.parameters.Description
+import org.openrndr.extra.parameters.Vector2Parameter
+import org.openrndr.math.Vector2
+
+@Description("Polar to rectangular")
+class PolarToRectangular : Filter(mppFilterShader(fx_polar_to_rectangular, "polar-to-rectangular")) {
+    var bicubicFiltering = true
+    override fun apply(source: Array<ColorBuffer>, target: Array<ColorBuffer>) {
+        if (bicubicFiltering && source.isNotEmpty()) {
+            source[0].generateMipmaps()
+            source[0].filter(MinifyingFilter.LINEAR_MIPMAP_LINEAR, MagnifyingFilter.LINEAR)
+        }
+        super.apply(source, target)
+    }
+}

orx-fx/src/commonMain/kotlin/distort/RectangularToPolar.kt

@@ -0,0 +1,23 @@
+package org.openrndr.extra.fx.distort
+
+import org.openrndr.draw.ColorBuffer
+import org.openrndr.draw.Filter
+import org.openrndr.draw.MagnifyingFilter
+import org.openrndr.draw.MinifyingFilter
+import org.openrndr.extra.fx.fx_rectangular_to_polar
+import org.openrndr.extra.fx.mppFilterShader
+import org.openrndr.extra.parameters.Description
+import org.openrndr.extra.parameters.Vector2Parameter
+import org.openrndr.math.Vector2
+
+@Description("Rectangular to polar")
+class RectangularToPolar : Filter(mppFilterShader(fx_rectangular_to_polar, "rectangular-to-polar")) {
+    var bicubicFiltering = true
+    override fun apply(source: Array<ColorBuffer>, target: Array<ColorBuffer>) {
+        if (bicubicFiltering && source.isNotEmpty()) {
+            source[0].generateMipmaps()
+            source[0].filter(MinifyingFilter.LINEAR_MIPMAP_LINEAR, MagnifyingFilter.LINEAR)
+        }
+        super.apply(source, target)
+    }
+}