Update examples

src/main/kotlin/examples/06_Advanced_drawing/C140_Shade_styles000.kt

@@ -1,6 +1,7 @@
 
 package examples.`06_Advanced_drawing`
 
+import org.intellij.lang.annotations.Language
 import org.openrndr.application
 import org.openrndr.color.ColorRGBa
 import org.openrndr.draw.*

src/main/kotlin/examples/06_Advanced_drawing/C140_Shade_styles001.kt

@@ -1,6 +1,7 @@
 
 package examples.`06_Advanced_drawing`
 
+import org.intellij.lang.annotations.Language
 import org.openrndr.application
 import org.openrndr.color.ColorRGBa
 import org.openrndr.draw.*

src/main/kotlin/examples/06_Advanced_drawing/C140_Shade_styles002.kt

@@ -1,6 +1,7 @@
 
 package examples.`06_Advanced_drawing`
 
+import org.intellij.lang.annotations.Language
 import org.openrndr.application
 import org.openrndr.color.ColorRGBa
 import org.openrndr.draw.*

src/main/kotlin/examples/06_Advanced_drawing/C140_Shade_styles003.kt

@@ -1,6 +1,7 @@
 
 package examples.`06_Advanced_drawing`
 
+import org.intellij.lang.annotations.Language
 import org.openrndr.application
 import org.openrndr.color.ColorRGBa
 import org.openrndr.draw.*

src/main/kotlin/examples/06_Advanced_drawing/C140_Shade_styles004.kt

@@ -1,6 +1,7 @@
 
 package examples.`06_Advanced_drawing`
 
+import org.intellij.lang.annotations.Language
 import org.openrndr.application
 import org.openrndr.color.ColorRGBa
 import org.openrndr.draw.*

src/main/kotlin/examples/06_Advanced_drawing/C140_Shade_styles005.kt

@@ -0,0 +1,52 @@
+
+package examples.`06_Advanced_drawing`
+
+import org.intellij.lang.annotations.Language
+import org.openrndr.application
+import org.openrndr.color.ColorRGBa
+import org.openrndr.draw.*
+import org.openrndr.extra.camera.OrbitalCamera
+import org.openrndr.extra.meshgenerators.sphereMesh
+import org.openrndr.math.Vector3
+import org.openrndr.shape.Circle
+import kotlin.math.cos
+import kotlin.math.sin
+
+fun main() {
+    application {
+        program {
+            val style = shadeStyle {
+                // Define the `random` function and declare a `c`
+                // variable to pass to the fragment shader.
+                vertexPreamble = """
+                        float random(vec2 st) {
+                            return fract(sin(dot(st.xy,
+                                vec2(12.9898, 78.233))) * 43758.5453123);
+                        }
+                        out vec3 c;
+                    """.trimIndent()
+
+                // Calculate the value of `c` per vertex.
+                // It will get interpolated by the GPU.
+                vertexTransform = """
+                        c.r = random(x_position.xy);
+                        c.g = random(x_position.yx);
+                        c.b = random(x_position.xy + 1.0);
+                    """.trimIndent()
+
+                // Declare a `c` variable to receive from the vertex shader.
+                fragmentPreamble = "in vec3 c;"
+                // Use the value of `c` to set the color of a pixel.
+                fragmentTransform = "x_fill.rgb = c;"
+            }
+            extend {
+                drawer.shadeStyle = style
+                repeat(7) {
+                    // Notice how we do not set `drawer.fill`.
+                    drawer.rectangle(50.0 + it * 77, 50.0, 70.0, 390.0)
+                }
+            }
+        }
+    }
+}
+