Step 3.2A: About Coincident Constraint, Merge-Points.

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Step 3.2A: About Coincident Constraint, Merge-Points.

Summary of this Step:

We explain for you the difference between Coincident Points and Merged-Points

You add and delete a Coincident constraint.

You  learn how to Merge-Points efficiently, and not so efficiently.

Coincident Constraint

Coincident constraint between Points moves the Points together.

Add Coincident-Constraint

Add Coincident Constraint between Points

Start-Points or end-Points of Lines

Add a Coincident Constraint

GST-Icon-SE-Tangent

1.Click Constraints toolbar > Add Coincident constraint

a)Click a PointRed-14-1b*

b)Click a different PointRed-14-2*

PointRed-14-1b* must remain selected when you click PointRed-14-2*

* start-Point and/or end-Point of a sketch-element.

The two Points become coincident.

Delete a Coincident Constraint

SHIFT+Click the sketch-element to identify constraints

SHIFT+Click the Point

To delete a constraint, we must show the constraint in the Selection-Window

1.SHIFT+ CLICK the Points that have a Coincident constraint

The two Points and the Coincident constraint are in the Selection-Window.

 

Contextual menu after Right-Click in the Selection-Window

Contextual menu after Right-Click in the Selection-Window

In the Selection-Window:

2.Right-click the Coincident constraint

3.Click Delete in the shortcut-menu

4.Drag one of the Lines to move the Lines apart again.

Merge-Points

Merge-Points moves the Points together AND deletes one of the Points.

Inefficient Method - NOT recommended

This method is not efficient.

Add Coincident Constraint between Points

Start-Points or end-Points of Lines in graphic-area

Do Merge-Points

GST-Icon-SE-Tangent

1.Click Geometry toolbar > Merge-Points

a.Click PointRed-14-1b*

b.Click PointRed-14-2*

c.Click the graphic-areaRed-14-3 in a place with no other elements.

* start-Point and/or end-Point of a sketch-element


Delete Merge-Points !?!

You cannot delete Merge-Points - it is not an element.

You can delete one or both sketch-elements.

Efficient Method - Recommended

This method is efficient.

Add sketch-element #1

Add sketch-element #1

STEP 1: Add sketch-element #1

Add the first sketch-element with the usual drag technique.

Add sketch-element #2

Add sketch-element #2

STEP 2: Add sketch-element #2

Before you Mouse-Button-Down...

Red-14-1 Move you mouse-pointer above the end-Point of sketch-element #1 so that only the end-Point is red

Mouse-button-down...  

Red-14-2 ...move your mouse...    

Red-14-3 ...mouse-button-up.

The start-Point of the second sketch-element is Merged with the end-Point of the first sketch-element.

Add sketch-element #2+

Add sketch-element #2+

STEP 3: Add sketch-elements #3+

Continue to Hover + Drag to add more sketch-elements.

 

STEP 4: Add the last sketch-element:

Before you Mouse-Button-Down...

Red-14-1 Hover above the end-Point of the sketch-element #N. ... The end-Point becomes red.

... Mouse-button-down...  

Red-14-2 ...move your mouse...    

Before you Mouse-Button-Up...

Red-14-3 Hover above the start-Point of the sketch-element #1 The Start-Point becomes red.

...mouse-button-up.

A sketch-loop is complete.

Should you fail to hover correctly, repair the sketch-loop - see above Merge-Point - the inefficient method.

Add the last sketch-element

Add the last sketch-element