Add CMYKHalftone, LumaSobel, DropShadow and segmented waves

2020-02-09 22:50:08 +01:00
parent 61507b525f
commit 95eecc150c
10 changed files with 369 additions and 4 deletions
--- a/orx-fx/src/main/kotlin/shadow/DropShadow.kt
+++ b/orx-fx/src/main/kotlin/shadow/DropShadow.kt
@@ -0,0 +1,71 @@
+package org.openrndr.extra.fx.shadow
+
+
+import org.openrndr.color.ColorRGBa
+import org.openrndr.draw.*
+import org.openrndr.extra.fx.filterFragmentCode
+import org.openrndr.extra.parameters.ColorParameter
+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.resourceUrl
+
+private class Blend: Filter(Shader.createFromCode(filterVertexCode, filterFragmentCode("shadow/dropshadow-blend.frag"))) {
+    var shift: Vector2 by parameters
+}
+
+@Description("Drop shadow")
+class DropShadow : Filter(Shader.createFromCode(filterVertexCode, filterFragmentCode("shadow/dropshadow-blur.frag"))) {
+
+    @IntParameter("blur window", 1, 25)
+    var window: Int by parameters
+    var spread: Double by parameters
+    @DoubleParameter("gain", 0.0, 4.0)
+    var gain: Double by parameters
+
+    var shift: Vector2 = Vector2.ZERO
+    @ColorParameter("color")
+    var color: ColorRGBa by parameters
+
+    private var intermediate: ColorBuffer? = null
+    private var intermediate2: ColorBuffer? = null
+    private var b = Blend()
+
+    init {
+        color = ColorRGBa.BLACK
+        window = 5
+        spread = 1.0
+        gain = 1.0
+    }
+
+    override fun apply(source: Array<ColorBuffer>, target: Array<ColorBuffer>) {
+        intermediate?.let {
+            if (it.width != target[0].width || it.height != target[0].height) {
+                intermediate = null
+            }
+        }
+        intermediate2?.let {
+            if (it.width != target[0].width || it.height != target[0].height) {
+                intermediate2 = null
+            }
+        }
+        if (intermediate == null) {
+            intermediate = colorBuffer(target[0].width, target[0].height, target[0].contentScale, target[0].format, target[0].type)
+        }
+        if (intermediate2 == null) {
+            intermediate2 = colorBuffer(target[0].width, target[0].height, target[0].contentScale, target[0].format, target[0].type)
+        }
+
+        intermediate?.let {
+            parameters["blurDirection"] = Vector2(1.0, 0.0)
+            super.apply(source, arrayOf(it))
+
+            parameters["blurDirection"] = Vector2(0.0, 1.0)
+            super.apply(arrayOf(it), arrayOf(intermediate2!!))
+
+            b.shift = shift / Vector2(target[0].width * 1.0, target[0].height * 1.0)
+            b.apply(arrayOf(intermediate2!!, source[0]), target)
+        }
+    }
+}