korge: add basic interaction

apps/documentViewer/src/main/kotlin/de/itkl/documentViewer/DocumentViewer.kt

@@ -164,28 +164,6 @@ fun <T> ZoomedImage(
 fun loadImageBitmap(file: File): ImageBitmap =
     file.inputStream().buffered().use(::loadImageBitmap)
 
-data class PointConverter(
-    val docWidth: Int,
-    val docHeight: Int,
-    val canvasWidth: Float,
-    val canvasHeight: Float
-) {
-    fun convertX(x: Int): Float {
-        val xf = x.toFloat()
-        val relXf = docWidth / xf
-        val scaledXf = canvasWidth * relXf
-//        println("X: $scaledXf")
-        return scaledXf
-    }
-    fun convertY(y: Int): Float {
-        val yf = y.toFloat()
-        val relYf = docHeight / yf
-        val scaledYf = canvasHeight * relYf
-//        println("Y: $scaledYf")
-        return scaledYf
-    }
-}
-
 @OptIn(ExperimentalFoundationApi::class)
 @Composable
 fun shapes(zoomableState: ZoomableState) {
@@ -215,13 +193,6 @@ fun canvas(zoomableState: ZoomableState, first: OcrPage) {
 //        }
     )
     {
-        val converter = PointConverter(
-            docWidth = 2481,
-            docHeight = 3507,
-            canvasWidth = this.size.width,
-            canvasHeight = this.size.height
-        )
-
         first.words.forEach { word ->
             val rect = word.rectangle
             drawRect(

apps/documentViewerKorge/deps.kproject.yml

@@ -0,0 +1,2 @@
+dependencies:
+  - https://github.com/korlibs/korge-box2d/tree/v0.1.2/korge-box2d##b1737ab3985c0bd3e2f002346ff2ac43ca1ebf48

apps/documentViewerKorge/src/jvmMain/kotlin/de/itkl/documentViewerKorge/main.kt

@@ -1,37 +1,76 @@
-import korlibs.time.*
+import korlibs.event.Key
+import korlibs.image.bitmap.context2d
 import korlibs.korge.*
 import korlibs.korge.scene.*
-import korlibs.korge.tween.*
 import korlibs.korge.view.*
 import korlibs.image.color.*
+import korlibs.image.font.readBitmapFont
 import korlibs.image.format.*
 import korlibs.io.file.std.*
+import korlibs.korge.input.*
+import korlibs.korge.tween.get
+import korlibs.korge.tween.tween
+import korlibs.korge.ui.uiButton
+import korlibs.korge.ui.uiCheckBox
 import korlibs.math.geom.*
-import korlibs.math.interpolation.*
+import korlibs.math.interpolation.Easing
+import korlibs.render.platform.DummyOpenglContext.scaleFactor
+import kotlin.time.Duration.Companion.seconds
 
 suspend fun main() {
 	Korge(windowSize = Size(512, 512), backgroundColor = Colors["#2b2b2b"]) {
 		val sceneContainer = sceneContainer()
 
-		sceneContainer.changeTo({ MyScene() })
+		sceneContainer.changeTo { ViewDocument() }
 	}
 }
 
-class MyScene : Scene() {
+class ViewDocument : Scene() {
 	override suspend fun SContainer.sceneMain() {
-		val minDegrees = (-18).degrees
-		val maxDegrees = (+16).degrees
+		var scaleFactor = 0.5
+		var offset = Point(0.0,0.0)
+		val moveFactor = 50.0
+		scale(scaleFactor)
 
-		val image = image(resourcesVfs["kitten_pixelated.png"].readBitmap()) {
-			rotation = maxDegrees
-			anchor(.5, .5)
-			scale(0.8)
-			position(256, 256)
+		suspend fun zoom(amount: Double) {
+			scaleFactor += amount
+			tween(
+				this@sceneMain::scale[scaleFactor],
+				time = 0.1.seconds,
+				easing = Easing.EASE_IN_OUT
+			)
 		}
 
-		while (true) {
-			image.tween(image::rotation[minDegrees], time = 1.seconds, easing = Easing.EASE_IN_OUT)
-			image.tween(image::rotation[maxDegrees], time = 1.seconds, easing = Easing.EASE_IN_OUT)
+		suspend fun moveX(amount: Double) {
+			offset = offset.copy(x = offset.x + amount)
+			tween(
+				this@sceneMain::x[offset.x],
+				time =  0.1.seconds,
+				easing = Easing.EASE_IN_OUT)
+		}
+		suspend fun moveY(amount: Double) {
+			offset = offset.copy(y = offset.y + amount)
+			tween(
+				this@sceneMain::y[offset.y],
+				time =  0.1.seconds,
+				easing = Easing.EASE_IN_OUT)
+		}
+
+		keys {
+			down { key ->
+				when (key.key) {
+					Key.EQUAL -> zoom(0.05)
+					Key.MINUS -> zoom(-0.05)
+					Key.UP -> moveY(moveFactor)
+					Key.DOWN -> moveY(-moveFactor)
+					Key.RIGHT -> moveX(moveFactor)
+					Key.LEFT -> moveX(-moveFactor)
+					else -> {}
+				}
+			}
+
+			val imageFile = localCurrentDirVfs["assets/xs-reg/00001.jpg"].readBitmap()
+			image(imageFile)
 		}
 	}
 }