Add parameter annotations to orx-shade-styles

2020-03-16 23:51:30 +01:00
parent 96b39ce7a1
commit 2a3462a136
5 changed files with 205 additions and 89 deletions
--- a/orx-shade-styles/src/main/kotlin/HalfAngularGradient.kt
+++ b/orx-shade-styles/src/main/kotlin/HalfAngularGradient.kt
@@ -0,0 +1,55 @@
+package org.openrndr.extra.shadestyles
+
+import org.openrndr.color.ColorRGBa
+import org.openrndr.draw.ShadeStyle
+import org.openrndr.extra.parameters.ColorParameter
+import org.openrndr.extra.parameters.DoubleParameter
+import org.openrndr.math.Vector2
+
+class HalfAngularGradient(color0: ColorRGBa, color1: ColorRGBa, offset: Vector2 = Vector2.ZERO, rotation: Double = 0.0) : ShadeStyle() {
+    @ColorParameter("start color", order = 0)
+    var color0: ColorRGBa by Parameter()
+    @ColorParameter("end color", order = 1)
+    var color1: ColorRGBa by Parameter()
+    var offset: Vector2 by Parameter()
+    @DoubleParameter("rotation", -180.0, 180.0, order = 2)
+    var rotation: Double by Parameter()
+    @DoubleParameter("length", 0.0, 10.0, order = 3)
+    var length: Double by Parameter()
+
+    init {
+        this.color0 = color0
+        this.color1 = color1
+        this.offset = offset
+        this.rotation = rotation
+        this.length = length
+
+        fragmentTransform = """
+            vec2 coord = (c_boundsPosition.xy - vec2(0.5) + p_offset/2.0) * 2.0;
+            
+            float cr = cos(radians(p_rotation));
+            float sr = sin(radians(p_rotation));
+            mat2 rm = mat2(cr, -sr, sr, cr);
+            vec2 rc = rm * coord;
+            float f = abs(atan(rc.y, rc.x)) / (3.1415926536);
+            
+            //float f = abs(atan(rc.y/rc.x))  / (3.1415926536/2.0);
+            //float f = (atan(rc.y/rc.x) + 3.1415926536/2.0) / (3.1415926536);            
+                   
+            vec4 color0 = p_color0 * vec4(p_color0.aaa, 1.0);
+            vec4 color1 = p_color1 * vec4(p_color1.aaa, 1.0);
+                       
+            vec4 gradient = color0 * (1.0-f) + color1 * f;
+            vec4 fn = vec4(x_fill.rgb, 1.0) * x_fill.a;            
+            x_fill = fn * gradient;
+            if (x_fill.a !=0) {
+                x_fill.rgb /= x_fill.a;
+            }        
+    }
+    """
+    }
+}
+
+fun halfAngularGradient(color0: ColorRGBa, color1: ColorRGBa, offset: Vector2 = Vector2.ZERO, rotation: Double = 0.0): ShadeStyle {
+    return HalfAngularGradient(color0, color1, offset, rotation)
+}