Implement dragging of extrude length by the end face. Also allows circular surfaces create by Lathe or Revolve to drag the previous group line that swept out the surface - this was unexpected but cool. Dragging other faces will need investigation as indicated in the comments.

phkahler · phkahler · commit e3f21de93d2d · 2025-11-30T18:54:16.000-05:00
diff --git a/src/draw.cpp b/src/draw.cpp
@@ -502,6 +502,9 @@ void GraphicsWindow::HitTestMakeSelection(Point2d mp) {
             uint32_t v = m->FirstIntersectionWith(mp);
             if(v) {
                 sel.entity.v = v;
+                Hover hov = {};
+                hov.selection = sel;
+                hoverList.Add(&hov);
             }
         }
     }
diff --git a/src/mouse.cpp b/src/mouse.cpp
@@ -64,6 +64,12 @@ void GraphicsWindow::StartDraggingByEntity(hEntity he) {
         for(int i = 0; i < pts; i++) {
             AddPointToDraggedList(e->point[i]);
         }
+    } else if(e->type == Entity::Type::FACE_NORMAL_PT ) {
+//           || e->type == Entity::Type::FACE_ROT_NORMAL_PT ) {   // needed for helix and revolve
+// Revolve is unstable because the point is on the axis. Helix drags in axial direction for same reason
+//           || e->type == Entity::Type::FACE_N_ROT_TRANS) {      // needed for linked objects
+// Linking fails possibly because the point[0] is never remapped in Group::CopyEntity
+        AddPointToDraggedList(e->point[0]);
     }
 }
 

Original file line number	Diff line number	Diff line change
`@@ -502,6 +502,9 @@ void GraphicsWindow::HitTestMakeSelection(Point2d mp) {`
`502`	`502`	`uint32_t v = m->FirstIntersectionWith(mp);`
`503`	`503`	`if(v) {`
`504`	`504`	`sel.entity.v = v;`
	`505`	`+ Hover hov = {};`
	`506`	`+ hov.selection = sel;`
	`507`	`+ hoverList.Add(&hov);`
`505`	`508`	`}`
`506`	`509`	`}`
`507`	`510`	`}`
Original file line number	Diff line number	Diff line change
`@@ -64,6 +64,12 @@ void GraphicsWindow::StartDraggingByEntity(hEntity he) {`
`64`	`64`	`for(int i = 0; i < pts; i++) {`
`65`	`65`	`AddPointToDraggedList(e->point[i]);`
`66`	`66`	`}`
	`67`	`+ } else if(e->type == Entity::Type::FACE_NORMAL_PT ) {`
	`68`	`+// \|\| e->type == Entity::Type::FACE_ROT_NORMAL_PT ) { // needed for helix and revolve`
	`69`	`+// Revolve is unstable because the point is on the axis. Helix drags in axial direction for same reason`
	`70`	`+// \|\| e->type == Entity::Type::FACE_N_ROT_TRANS) { // needed for linked objects`
	`71`	`+// Linking fails possibly because the point[0] is never remapped in Group::CopyEntity`
	`72`	`+ AddPointToDraggedList(e->point[0]);`
`67`	`73`	`}`
`68`	`74`	`}`
`69`	`75`