test: added matrix 3x3 test (#1258)

* began implementation of UI font size scaling

fxgl-entity/src/test/kotlin/com/almasb/fxgl/physics/box2d/common/Mat33Test.kt

@@ -0,0 +1,76 @@
+/*
+ * FXGL - JavaFX Game Library. The MIT License (MIT).
+ * Copyright (c) AlmasB (almaslvl@gmail.com).
+ * See LICENSE for details.
+ */
+
+package com.almasb.fxgl.physics.box2d.common
+
+import com.almasb.fxgl.core.math.Vec3
+import org.hamcrest.CoreMatchers.*
+import org.hamcrest.MatcherAssert.*
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Test
+
+/**
+ * @author Ben Highgate (ben.highgate@gmail.com)
+ */
+class Mat33Test {
+
+    @Test
+    fun `Matrix mul vector`() {
+        val mat = Mat33()
+
+        mat.ex.set(3f, 4f, 2f)
+        mat.ey.set(6f, 2f, 5f)
+        mat.ez.set(4f, 3f, 3f)
+
+        val v = Vec3(2f, 1f, 4f)
+
+        // [ 3 6 4 ] x [ 2 ] = [ 28 ]
+        // [ 4 2 3 ]   [ 1 ]   [ 22 ]
+        // [ 2 5 3 ]   [ 4 ]   [ 21 ]
+
+        val out = Vec3()
+
+        Mat33.mulToOutUnsafe(mat, v, out)
+
+        assertThat(out, `is`(Vec3(28f, 22f, 21f)))
+    }
+
+    @Test
+    fun `Solve Ax = b`() {
+        val A = Mat33()
+        A.ex.set(3.0f, 4.0f, 2.0f)
+        A.ey.set(6.0f, 2.0f, 5.0f)
+        A.ez.set(4.0f, 3.0f, 3.0f)
+
+        val b = Vec3(28.0f, 22.0f, 21.0f)
+        val out = Vec3()
+
+        // [ 3 6 4 ] x [ 2 ] = [ 28 ]
+        // [ 4 2 3 ]   [ 1 ]   [ 22 ]
+        // [ 2 5 3 ]   [ 4 ]   [ 21 ]
+
+        A.solve33ToOut(b, out)
+
+        assertEquals(2.0f, out.x, 0.0001f)
+        assertEquals(1.0f, out.y, 0.0001f)
+        assertEquals(4.0f, out.z, 0.0001f)
+    }
+
+    @Test
+    fun `Symmetrical Invert`() {
+        val A = Mat33()
+        A.ex.set(3.0f, 4.0f, 2.0f)
+        A.ey.set(6.0f, 2.0f, 5.0f)
+        A.ez.set(4.0f, 3.0f, 3.0f)
+
+        val b = Mat33()
+        A.getSymInverse33(b)
+
+        assertThat(b.ex, `is`(Vec3(-3.0f, -6.0f, 10.0f)))
+        assertThat(b.ey, `is`(Vec3(-6.0f, -7.0f, 15.0f)))
+        assertThat(b.ez, `is`(Vec3(10.0f, 15.0f, -30.0f)))
+    }
+}

fxgl-scene/src/main/kotlin/com/almasb/fxgl/ui/FXGLDialogFactoryServiceProvider.kt

@@ -6,6 +6,7 @@
 
 package com.almasb.fxgl.ui
 
+import com.almasb.fxgl.core.Inject
 import com.almasb.fxgl.core.util.EmptyRunnable
 import com.almasb.fxgl.localization.LocalizationService
 import javafx.beans.binding.StringBinding
@@ -34,6 +35,9 @@ import java.util.function.Predicate
  */
 class FXGLDialogFactoryServiceProvider : DialogFactoryService() {
 
+    @Inject("fontSizeScaleUI")
+    private var fontSizeScaleUI = 1.0
+
     private lateinit var uiFactory: UIFactoryService
 
     private lateinit var local: LocalizationService
@@ -286,7 +290,7 @@ class FXGLDialogFactoryServiceProvider : DialogFactoryService() {
     }
 
     private fun createMessage(message: String): Text {
-        return uiFactory.newText(message)
+        return uiFactory.newText(message, fontSizeScaleUI * 18.0)
     }
 
     private fun localizedStringProperty(key: String): StringBinding {

fxgl/src/main/kotlin/com/almasb/fxgl/app/Settings.kt

@@ -241,6 +241,11 @@ class GameSettings(
         var soundMenuPress: String = "menu/press.wav",
         var soundMenuSelect: String = "menu/select.wav",
 
+        /**
+         * Set the scale value for UI text size, default = 1.0.
+         */
+        var fontSizeScaleUI: Double = 1.0,
+
         var pixelsPerMeter: Double = 50.0,
 
         var collisionDetectionStrategy: CollisionDetectionStrategy = CollisionDetectionStrategy.BRUTE_FORCE,
@@ -391,6 +396,7 @@ class GameSettings(
                 soundMenuBack,
                 soundMenuPress,
                 soundMenuSelect,
+                fontSizeScaleUI,
                 pixelsPerMeter,
                 collisionDetectionStrategy,
                 secondsIn24h,
@@ -562,6 +568,8 @@ class ReadOnlyGameSettings internal constructor(
         val soundMenuPress: String,
         val soundMenuSelect: String,
 
+        val fontSizeScaleUI: Double,
+
         val pixelsPerMeter: Double,
 
         val collisionDetectionStrategy: CollisionDetectionStrategy,