Tweak window setup order so viewsd have access to screen in View.wasAdded

build.gradle.kts

@@ -2,9 +2,9 @@ import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins {
-	kotlin("jvm") version "1.3.40"
+	kotlin("jvm") version "1.3.50"
 	idea
-	id("fabric-loom") version "0.2.3-SNAPSHOT"
+	id("fabric-loom") version "0.2.5-SNAPSHOT"
 	id("com.github.johnrengelman.shadow") version "4.0.4"
 }
 
@@ -22,9 +22,9 @@ version = "0.1.0"
 
 val minecraftVersion = "1.14.4"
 val yarnMappings = "1.14.4+build.9"
-val loaderVersion = "0.4.8+build.159"
+val loaderVersion = "0.6.3+build.167"
-val fabricVersion = "0.3.1+build.208"
+val fabricVersion = "0.4.0+build.240-1.14"
-val fabricKotlinVersion = "1.3.40+build.1"
+val fabricKotlinVersion = "1.3.50+build.3"
 val junitVersion = "5.4.0"
 
 minecraft {
@@ -34,6 +34,7 @@ repositories {
 	maven(url = "http://maven.fabricmc.net/") {
 		name = "Fabric"
 	}
+	maven(url = "https://kotlin.bintray.com/kotlinx")
 	jcenter()
 	mavenLocal()
 }
@@ -45,11 +46,11 @@ dependencies {
 
 	mappings(group = "net.fabricmc", name = "yarn", version = yarnMappings)
 
-	modCompile(group = "net.fabricmc", name = "fabric-loader", version = loaderVersion)
+	modImplementation(group = "net.fabricmc", name = "fabric-loader", version = loaderVersion)
-	modCompile(group = "net.fabricmc.fabric-api", name = "fabric-api", version = fabricVersion)
+	modImplementation(group = "net.fabricmc.fabric-api", name = "fabric-api", version = fabricVersion)
 
-	modCompile(group = "net.fabricmc", name = "fabric-language-kotlin", version = fabricKotlinVersion)
+	modImplementation(group = "net.fabricmc", name = "fabric-language-kotlin", version = fabricKotlinVersion)
-	compileOnly(group = "net.fabricmc", name = "fabric-language-kotlin", version = fabricKotlinVersion)
+	// compileOnly(group = "net.fabricmc", name = "fabric-language-kotlin", version = fabricKotlinVersion)
 
 	// compileOnly(group = "org.jetbrains.kotlin", name = "kotlin-stdlib-jdk8", version = "1.3.21")
 	// compileOnly(group = "org.jetbrains.kotlin", name = "kotlin-reflect", version = "1.3.21")

src/main/kotlin/net/shadowfacts/cacao/CacaoScreen.kt

@@ -37,8 +37,11 @@ open class CacaoScreen: Screen(LiteralText("CacaoScreen")) {
 	 */
 	fun <T: Window> addWindow(window: T, index: Int = _windows.size): T {
 		_windows.add(index, window)
+
 		window.screen = this
+		window.wasAdded()
 		window.resize(width, height)
+
 		return window
 	}
 

src/main/kotlin/net/shadowfacts/cacao/Window.kt

@@ -79,7 +79,9 @@ class Window(
 
 	init {
 		createInternalConstraints()
+	}
 
+	fun wasAdded() {
 		viewController.window = this
 		viewController.loadView()
 

src/main/kotlin/net/shadowfacts/cacao/geometry/BezierCurve.kt

@@ -0,0 +1,49 @@
+package net.shadowfacts.cacao.geometry
+
+import java.lang.RuntimeException
+import kotlin.math.pow
+
+/**
+ * Helper class that represents a cubic bezier curve.
+ *
+ * @author shadowfacts
+ */
+data class BezierCurve(private val points: Array<Point>) {
+
+	init {
+		if (points.size != 4) {
+			throw RuntimeException("Cubic bezier curve must have exactly four points")
+		}
+	}
+
+	fun point(time: Double): Point {
+		val x = coordinate(time, Axis.HORIZONTAL)
+		val y = coordinate(time, Axis.VERTICAL)
+		return Point(x, y)
+	}
+
+	private fun coordinate(t: Double, axis: Axis): Double {
+		// B(t)=(1-t)^3*p0+3(1-t)^2*t*p1+3(1-t)*t^2*p2+t^3*p3
+		val p0 = points[0][axis]
+		val p1 = points[1][axis]
+		val p2 = points[2][axis]
+		val p3 = points[3][axis]
+		return ((1 - t).pow(3) * p0) + (3 * (1 - t).pow(2) * t * p1) + (3 * (1 - t) * t.pow(2) * p2) + (t.pow(3) * p3)
+	}
+
+	override fun equals(other: Any?): Boolean {
+		if (this === other) return true
+		if (javaClass != other?.javaClass) return false
+
+		other as BezierCurve
+
+		if (!points.contentEquals(other.points)) return false
+
+		return true
+	}
+
+	override fun hashCode(): Int {
+		return points.contentHashCode()
+	}
+
+}

src/main/kotlin/net/shadowfacts/cacao/geometry/Point.kt

@@ -21,4 +21,11 @@ data class Point(val x: Double, val y: Double) {
 		return Point(x - other.x, y - other.y)
 	}
 
+	operator fun get(axis: Axis): Double {
+		return when (axis) {
+			Axis.HORIZONTAL -> x
+			Axis.VERTICAL -> y
+		}
+	}
+
 }

src/main/kotlin/net/shadowfacts/cacao/util/RenderHelper.kt

@@ -9,6 +9,7 @@ import net.minecraft.client.render.VertexFormat
 import net.minecraft.client.render.VertexFormats
 import net.minecraft.client.sound.PositionedSoundInstance
 import net.minecraft.sound.SoundEvent
+import net.shadowfacts.cacao.geometry.BezierCurve
 import net.shadowfacts.cacao.geometry.Point
 import net.shadowfacts.cacao.geometry.Rect
 import net.shadowfacts.cacao.util.texture.Texture
@@ -108,6 +109,14 @@ object RenderHelper {
 		GlStateManager.translated(x, y, z)
 	}
 
+	/**
+	 * @see org.lwjgl.opengl.GL11.glScaled
+	 */
+	fun scale(x: Double, y: Double, z: Double = 1.0) {
+		if (disabled) return
+		GlStateManager.scaled(x, y, z)
+	}
+
 	/**
 	 * @see org.lwjgl.opengl.GL11.glColor4f
 	 */

src/main/kotlin/net/shadowfacts/cacao/view/BezierCurveView.kt

@@ -0,0 +1,36 @@
+package net.shadowfacts.cacao.view
+
+import com.mojang.blaze3d.platform.GlStateManager
+import net.shadowfacts.cacao.geometry.BezierCurve
+import net.shadowfacts.cacao.geometry.Point
+import net.shadowfacts.cacao.util.Color
+import net.shadowfacts.cacao.util.RenderHelper
+
+/**
+ * @author shadowfacts
+ */
+class BezierCurveView(val curve: BezierCurve): View() {
+
+	private val points by lazy {
+		val step = 0.05
+		var t = 0.0
+		val points = mutableListOf<Point>()
+		while (t <= 1) {
+			points.add(curve.point(t))
+			t += step
+		}
+		points
+	}
+
+	var lineWidth = 3f
+	var lineColor = Color.BLACK
+
+	override fun drawContent(mouse: Point, delta: Float) {
+		RenderHelper.scale(bounds.width, bounds.height)
+		for ((index, point) in points.withIndex()) {
+			val next = points.getOrNull(index + 1) ?: break
+			RenderHelper.drawLine(point, next, zIndex, lineWidth, lineColor)
+		}
+	}
+
+}