README.md

@@ -1,13 +1,73 @@
 [![JetBrains Research](https://jb.gg/badges/research.svg)](https://confluence.jetbrains.com/display/ALL/JetBrains+on+GitHub)
 
-# DataForge plugins for visualisation
+# DataForge Visualisation Platform
 
-## Common visualisation objects
+This repository contains [DataForge](http://npm.mipt.ru/dataforge/) 
+(also [here](https://github.com/mipt-npm/dataforge-core)) components useful for visualization in
+various scientific applications. Currently, the main application is 3D visualization for particle
+physics experiments.
 
-## JavaFX utilities for meta manipulations
+The project is developed as a Kotlin multiplatform application, currently 
+targeting browser JavaScript and JVM.
 
-## 3D visualisation
+Main features:
+- 3D visualization of complex experimental set-ups
+- Event display such as particle tracks, etc.
+- Scales up to few hundred thousands of elements
+- Camera move, rotate, zoom-in and zoom-out
+- Object tree with property editor
+- Settings export and import
+- Multiple platform support
+ 
 
-Includes common discription and serializers, JavaFX and Three.js implementations.
+## Modules contained in this repository:
 
-## GDML bindings for 3D visualisation (to be moved to gdml project) 
+
+### dataforge-vis-common 
+
+Common visualisation objects such as VisualObject and VisualGroup.
+
+
+### dataforge-vis-spatial
+
+Includes common description and serializers for 3D visualisation, JavaFX and Three.js implementations.
+
+
+### dataforge-vis-spatial-gdml
+
+GDML bindings for 3D visualisation (to be moved to gdml project).
+
+
+### dataforge-vis-jsroot
+
+Some JSROOT bindings. 
+
+Note: Currently, this part is experimental and put here for completeness. This module may not build.
+
+
+### demo
+
+Several demonstrations of using the dataforge-vis framework:
+
+##### spatial-showcase
+
+Contains a simple demonstration (grid with a few shapes that you can rotate, move camera, etc.).
+ 
+To see the demo: run `demo/spatial-showcase/distribution/installJsDist` Gradle task, then open
+`build/distribuions/spatial-showcase-js-0.1.0-dev/index.html` file in your browser.
+
+Other demos can be built similarly.  
+
+##### muon-monitor
+
+A full-stack application example, showing the 
+[Muon Monitor](http://npm.mipt.ru/projects/physics.html#mounMonitor) experiment set-up.
+
+Includes server back-end generating events, as well as visualization front-end. 
+
+To run full-stack app (both server and browser front-end), run 
+`demo/muon-monitor/application/run` task.
+
+##### gdml
+
+Visualization example for geometry defined as GDML file.

dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/AbstractVisualGroup.kt

@@ -6,7 +6,7 @@ import kotlinx.serialization.Transient
 
 
 /**
- * Abstract implementation of group of [VisualObject]
+ * Abstract implementation of mutable group of [VisualObject]
  */
 abstract class AbstractVisualGroup : AbstractVisualObject(), MutableVisualGroup {
 
@@ -24,6 +24,7 @@ abstract class AbstractVisualGroup : AbstractVisualObject(), MutableVisualGroup
         }
     }
 
+    // TODO Consider renaming to `StructureChangeListener` (singular)
     private data class StructureChangeListeners(val owner: Any?, val callback: (Name, VisualObject?) -> Unit)
 
     @Transient

dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/Colors.kt

@@ -6,7 +6,8 @@ import hep.dataforge.values.int
 import kotlin.math.max
 
 /**
- * Taken from https://github.com/markaren/three.kt/blob/master/threejs-wrapper/src/main/kotlin/info/laht/threekt/math/ColorConstants.kt
+ * Definitions of common colors. Taken from
+ * https://github.com/markaren/three.kt/blob/master/threejs-wrapper/src/main/kotlin/info/laht/threekt/math/ColorConstants.kt
  */
 object Colors {
     const val aliceblue = 0xF0F8FF
@@ -184,6 +185,9 @@ object Colors {
     const val GREEN_KEY = "green"
     const val BLUE_KEY = "blue"
 
+    /**
+     * Convert color represented as Meta to string of format #rrggbb
+     */
     fun fromMeta(item: MetaItem<*>): String {
         return when (item) {
             is MetaItem.NodeItem<*> -> {
@@ -204,11 +208,17 @@ object Colors {
         }
     }
 
+    /**
+     * Convert Int color to string of format #rrggbb
+     */
     fun rgbToString(rgb: Int): String {
         val string = rgb.toString(16).padStart(6, '0')
         return "#" + string.substring(max(0, string.length - 6))
     }
 
+    /**
+     * Convert three bytes representing color to string of format #rrggbb
+     */
     fun rgbToString(red: UByte, green: UByte, blue: UByte): String {
         fun colorToString(color: UByte): String {
             return color.toString(16).padStart(2, '0')
@@ -221,6 +231,9 @@ object Colors {
         }
     }
 
+    /**
+     * Convert three bytes representing color to Meta
+     */
     fun rgbToMeta(r: UByte, g: UByte, b: UByte): Meta = buildMeta {
         RED_KEY put r.toInt()
         GREEN_KEY put g.toInt()

dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/VisualGroup.kt

@@ -3,6 +3,9 @@ package hep.dataforge.vis.common
 import hep.dataforge.names.*
 import hep.dataforge.provider.Provider
 
+/**
+ * Represents a group of [VisualObject] instances
+ */
 interface VisualGroup : Provider, Iterable<VisualObject>, VisualObject {
     /**
      * A map of top level named children
@@ -61,6 +64,9 @@ data class StyleRef(val group: VisualGroup, val styleName: Name)
 
 val VisualGroup.isEmpty: Boolean get() = this.children.isEmpty()
 
+/**
+ * Mutable version of [VisualGroup]
+ */
 interface MutableVisualGroup : VisualGroup {
 
     /**

dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/VisualObject.kt

@@ -69,11 +69,17 @@ interface VisualObject : Configurable {
         //const val META_KEY = "@meta"
         //const val TAGS_KEY = "@tags"
 
-
     }
 }
 
+/**
+ * Get [VisualObject] property using key as a String
+ */
 fun VisualObject.getProperty(key: String, inherit: Boolean = true): MetaItem<*>? = getProperty(key.toName(), inherit)
+
+/**
+ * Set [VisualObject] property using key as a String
+ */
 fun VisualObject.setProperty(key: String, value: Any?) = setProperty(key.toName(), value)
 
 /**

dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/valueWidget.kt

@@ -3,12 +3,18 @@ package hep.dataforge.vis.common
 import hep.dataforge.descriptors.ValueDescriptor
 import hep.dataforge.meta.*
 
+/**
+ * Extension property to access the "widget" key of [ValueDescriptor]
+ */
 var ValueDescriptor.widget: Meta
     get() = this.config["widget"].node?: EmptyMeta
     set(value) {
         this.config["widget"] = value
     }
 
+/**
+ * Extension property to access the "widget.type" key of [ValueDescriptor]
+ */
 var ValueDescriptor.widgetType: String?
     get() = this["widget.type"].string
     set(value) {

dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Extruded.kt

@@ -62,7 +62,7 @@ class Extruded(
     override fun <T : Any> toGeometry(geometryBuilder: GeometryBuilder<T>) {
         val shape: Shape2D = shape
 
-        if (shape.size < 3) error("Extruded shape requires more than points per layer")
+        if (shape.size < 3) error("Extruded shape requires more than 2 points per layer")
 
         /**
          * Expand the shape for specific layers

dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/VisualGroup3D.kt

@@ -24,6 +24,9 @@ import kotlinx.serialization.Serializable
 import kotlinx.serialization.UseSerializers
 import kotlin.collections.set
 
+/**
+ * Represents 3-dimensional Visual Group
+ */
 @Serializable
 @SerialName("group.3d")
 class VisualGroup3D : AbstractVisualGroup(), VisualObject3D {

dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/VisualObject3D.kt

@@ -15,6 +15,9 @@ import hep.dataforge.vis.spatial.VisualObject3D.Companion.SELECTED_KEY
 import hep.dataforge.vis.spatial.VisualObject3D.Companion.VISIBLE_KEY
 import kotlinx.serialization.UseSerializers
 
+/**
+ * Interface for 3-dimensional [VisualObject]
+ */
 interface VisualObject3D : VisualObject {
     var position: Point3D?
     var rotation: Point3D?

dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/ThreeCompositeFactory.kt

@@ -6,7 +6,7 @@ import info.laht.threekt.core.BufferGeometry
 import info.laht.threekt.objects.Mesh
 
 /**
- * This should be inner, becaulse it uses object builder
+ * This should be inner, because it uses object builder
  */
 class ThreeCompositeFactory(val three: ThreePlugin) : MeshThreeFactory<Composite>(Composite::class) {
 

dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/csg.kt

@@ -16,6 +16,9 @@ import info.laht.threekt.math.Matrix4
 import info.laht.threekt.math.Vector3
 import info.laht.threekt.objects.Mesh
 
+/**
+ * Constructive Solid Geometry
+ */
 open external class CSG {
     open var polygons: Array<Polygon>
     open fun clone(): CSG