feat: links

lib/classes/gsf/header2/chunks/link.dart

@@ -1,8 +1,12 @@
 import 'dart:typed_data';
 
+import 'package:paraworld_gsf_viewer/classes/bouding_box.dart';
 import 'package:paraworld_gsf_viewer/classes/gsf/header2/chunks/chunk.dart';
 import 'package:paraworld_gsf_viewer/classes/gsf_data.dart';
-import 'package:vector_math/vector_math_64.dart';
+import 'package:paraworld_gsf_viewer/classes/vertex.dart';
+import 'package:vector_math/vector_math.dart';
+
+typedef LinkModel = ({String fourCC, ModelVertex vertex});
 
 class LinkChunk extends Chunk {
   late final Standard4BytesData<int> guid;
@@ -105,6 +109,17 @@ class LinkChunk extends Chunk {
     }
   }
 
+  LinkModel toModelVertex() {
+    return (
+      fourCC: fourccLink.value.value,
+      vertex: ModelVertex(
+        position,
+        box: BoundingBoxModel.zero(),
+        positionOffset: Vector3.zero(),
+      ),
+    );
+  }
+
   @override
   int getEndOffset() {
     return boneWeights?.offsettedLength ?? fourccLink.offsettedLength;

lib/classes/gsf/header2/chunks/mesh.dart

@@ -87,6 +87,7 @@ mixin MeshToModelInterface on Chunk {
       cloth: [],
       boundingBox: globalBB,
       skeletons: [],
+      links: [],
     );
   }
 }

lib/classes/gsf/header2/model_settings.dart

@@ -4,6 +4,7 @@ import 'package:paraworld_gsf_viewer/classes/gsf/header2/chunks/bounding_box.dar
 import 'package:paraworld_gsf_viewer/classes/gsf/header2/chunks/chunk.dart';
 import 'package:paraworld_gsf_viewer/classes/gsf/header2/chunks/chunk_attributes.dart';
 import 'package:paraworld_gsf_viewer/classes/gsf/header2/chunks/cloth.dart';
+import 'package:paraworld_gsf_viewer/classes/gsf/header2/chunks/link.dart';
 import 'package:paraworld_gsf_viewer/classes/gsf/header2/chunks/mesh.dart';
 import 'package:paraworld_gsf_viewer/classes/gsf/header2/chunks/skeleton.dart';
 import 'package:paraworld_gsf_viewer/classes/gsf/header2/chunks_table.dart';
@@ -239,12 +240,15 @@ class ModelSettings extends GsfPart {
   ) {
     final List<ModelMesh> meshes = [];
     final List<ModelMesh> cloths = [];
-    List<List<List<(int?, ModelVertex)>>> skeletons = [];
+    final List<SkeletonModel> skeletons = [];
+    final List<LinkModel> links = [];
     final List<int> materialIndices =
         fallbackTable?.usedMaterialIndexes.map((e) => e.value).toList() ?? [];
     for (final chunk in chunksTable?.chunks ?? <Chunk>[]) {
       if (chunk.type == ChunkType.skeleton) {
         skeletons.add((chunk as SkeletonChunk).toModel());
+      } else if (chunk.type.isLinkLike()) {
+        links.add((chunk as LinkChunk).toModelVertex());
       } else if (chunk.type.isMeshLike()) {
         meshes.add((chunk as MeshChunk).toModelMesh(
           ChunkAttributes.fromValue(type, chunk.attributes.value),
@@ -274,6 +278,7 @@ class ModelSettings extends GsfPart {
       cloth: cloths,
       boundingBox: boundingBox.toModelBox(),
       skeletons: skeletons,
+      links: links,
     );
   }
 

lib/classes/model.dart

@@ -3,8 +3,10 @@ import 'dart:typed_data';
 import 'dart:ui' as ui;
 
 import 'package:flutter/material.dart';
+import 'package:flutter/widgets.dart';
 import 'package:paraworld_gsf_viewer/classes/bouding_box.dart';
 import 'package:paraworld_gsf_viewer/classes/gsf/header2/chunks/chunk_attributes.dart';
+import 'package:paraworld_gsf_viewer/classes/gsf/header2/chunks/link.dart';
 import 'package:paraworld_gsf_viewer/classes/gsf/header2/chunks/skeleton.dart';
 import 'package:paraworld_gsf_viewer/classes/gsf/header2/material_attribute.dart';
 import 'package:paraworld_gsf_viewer/classes/gsf/header2/model_settings.dart';
@@ -30,6 +32,7 @@ class Model {
     required this.cloth,
     required this.boundingBox,
     required this.skeletons,
+    required this.links,
   });
 
   final ModelType type;
@@ -38,6 +41,7 @@ class Model {
   final List<ModelMesh> cloth;
   final BoundingBoxModel boundingBox;
   final List<SkeletonModel> skeletons;
+  final List<LinkModel> links;
   // todo skeleton
   // todo position links
 
@@ -50,9 +54,22 @@ class Model {
     ..strokeWidth = 2
     ..strokeCap = StrokeCap.round;
 
+  final positionLinkPaint = Paint()
+    ..color = Colors.blue
+    ..strokeWidth = 8
+    ..strokeCap = StrokeCap.round;
+
   final Map<ModelTexture, (int, img.Image)> _texturesOffsets = {};
   ui.Image? _composedModelImage;
 
+  TextStyle _getTextStyle(double scaleFactor, Color color) {
+    return TextStyle(
+      color: color,
+      fontSize: 12 + scaleFactor,
+      fontWeight: FontWeight.bold,
+    );
+  }
+
   /// When loading a model, we need to load all the textures and compose them into a single image
   /// so it allow for a single canvas paint call for z buffering with single image shader
   /// Images are being added to the composed image from left to right.
@@ -145,6 +162,48 @@ class Model {
     }
   }
 
+  void drawPositionLinks(
+    Transformation transformation,
+    ui.Size size,
+    ui.Canvas canvas,
+  ) {
+    final projectionData = getProjectionData(size);
+    final pos = <double>[];
+    final textStyle = _getTextStyle(transformation.scaleFactor, Colors.blue);
+    for (final link in links) {
+      final coords = link.vertex.project(
+        widthOffset: projectionData.widthOffset,
+        heightOffset: projectionData.heightOffset,
+        maxWidth: projectionData.maxFactor,
+        maxHeight: projectionData.maxFactor,
+        transformation: transformation,
+      );
+      pos.addAll([coords.pointProjection.x, coords.pointProjection.y]);
+      final namePainter = TextPainter(
+        text: TextSpan(
+          text: link.fourCC.toString(),
+          style: textStyle,
+        ),
+        textDirection: TextDirection.ltr,
+      )..layout(
+          minWidth: 0,
+          maxWidth: size.width,
+        );
+      namePainter.paint(
+        canvas,
+        Offset(
+          coords.pointProjection.x,
+          coords.pointProjection.y,
+        ),
+      );
+    }
+    canvas.drawRawPoints(
+      ui.PointMode.points,
+      Float32List.fromList(pos),
+      positionLinkPaint,
+    );
+  }
+
   void drawSkeleton(
     Transformation transformation,
     ui.Size size,
@@ -153,11 +212,7 @@ class Model {
   ) {
     final projectionData = getProjectionData(size);
     skeletonPaint.color = meshColor;
-    final textStyle = TextStyle(
-      color: Colors.pink,
-      fontSize: 12 + transformation.scaleFactor,
-      fontWeight: FontWeight.bold,
-    );
+    final textStyle = _getTextStyle(transformation.scaleFactor, Colors.pink);
     final jointPaint = Paint()
       ..color = Colors.pink
       ..strokeWidth = 3 + transformation.scaleFactor / 2;

lib/widgets/header2/widgets/chunks/submesh.dart

@@ -44,6 +44,7 @@ class SubmeshDisplay extends StatelessWidget {
       cloth: [],
       boundingBox: modelData.box,
       skeletons: [],
+      links: [],
     );
     return Flexible(
       child: Column(

lib/widgets/viewer/model_drawer.dart

@@ -24,6 +24,7 @@ class ModelDrawer extends CustomPainter {
     required this.attributesFilter,
     required this.showCloth,
     required this.showSkeleton,
+    required this.showLinks,
   }) : super(repaint: mousePosition);
 
   final ValueNotifier<MouseEventData> mousePosition;
@@ -35,6 +36,7 @@ class ModelDrawer extends CustomPainter {
   final ChunkAttributes attributesFilter;
   final bool showCloth;
   final bool showSkeleton;
+  final bool showLinks;
 
   final Transformation transformation = Transformation();
 
@@ -202,8 +204,13 @@ class ModelDrawer extends CustomPainter {
         meshColor,
       );
     }
-
-    drawAxis(size, canvas);
+    if (showLinks) {
+      model.drawPositionLinks(
+        transformation,
+        size,
+        canvas,
+      );
+    }
   }
 
   @override

lib/widgets/viewer/notifier.dart

@@ -94,6 +94,14 @@ class ModelSelectionStateNotifier extends Notifier<ModelViewerSelectionState> {
         orElse: () => null);
   }
 
+  void updateShowLinks(bool showLinks) {
+    state.maybeMap(
+        withModel: (withModel) {
+          state = withModel.copyWith(showLinks: showLinks);
+        },
+        orElse: () => null);
+  }
+
   void updateFilterAttribute(int indice) {
     state.maybeMap(
         withModel: (withModel) {

lib/widgets/viewer/state.dart

@@ -22,5 +22,6 @@ class ModelViewerSelectionState with _$ModelViewerSelectionState {
     @Default(true) showTexture,
     @Default(false) showPartyColor,
     @Default(false) showSkeleton,
+    @Default(true) showLinks,
   }) = ModelViewerSelectionStateWithModel;
 }