Added priority in SnappingGuides

src/app/views/canvas/snapping/session.ts

@@ -61,12 +61,18 @@ export class SnappingSession<ElementType> {
     a: SnappableGuide<ElementType>,
     b: SnappableGuide<ElementType>
   ) {
-    if (a.guide.type === "point" && b.guide.type !== "point") {
-      return -1;
-    } else if (a.guide.type === "point" && b.guide.type === "point") {
-      return 0;
+    const aPriority = a.guide?.priority ?? 0;
+    const bPriority = b.guide?.priority ?? 0;
+    if (aPriority > 0 || bPriority > 0) {
+      return bPriority - aPriority;
     } else {
-      return 1;
+      if (a.guide.type === "point" && b.guide.type !== "point") {
+        return -1;
+      } else if (a.guide.type === "point" && b.guide.type === "point") {
+        return 0;
+      } else {
+        return 1;
+      }
     }
   }
 

src/core/prototypes/common.ts

@@ -278,6 +278,7 @@ export namespace SnappingGuides {
     type: string;
     visible: boolean;
     visualType?: SnappingGuidesVisualTypes;
+    priority?: number;
   }
 
   export interface Axis extends Description {

src/core/prototypes/plot_segments/region_2d/cartesian.ts

@@ -241,10 +241,30 @@ export class CartesianPlotSegment extends PlotSegmentClass<
     const attrs = this.state.attributes;
     const { x1, y1, x2, y2 } = attrs;
     return [
-      <SnappingGuides.Axis>{ type: "x", value: x1, attribute: "x1" },
-      <SnappingGuides.Axis>{ type: "x", value: x2, attribute: "x2" },
-      <SnappingGuides.Axis>{ type: "y", value: y1, attribute: "y1" },
-      <SnappingGuides.Axis>{ type: "y", value: y2, attribute: "y2" },
+      <SnappingGuides.Axis>{
+        type: "x",
+        value: x1,
+        attribute: "x1",
+        priority: 1,
+      },
+      <SnappingGuides.Axis>{
+        type: "x",
+        value: x2,
+        attribute: "x2",
+        priority: 1,
+      },
+      <SnappingGuides.Axis>{
+        type: "y",
+        value: y1,
+        attribute: "y1",
+        priority: 1,
+      },
+      <SnappingGuides.Axis>{
+        type: "y",
+        value: y2,
+        attribute: "y2",
+        priority: 1,
+      },
     ];
   }