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user82991
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See image 1. Circles A,B,C and D contain the anchor points of the blue shape. Let's assume you want to continue straight line segments AB and DC to form a sharp corner.

enter image description here

  1. Draw lines AB and DC. To do it exactly have smart guides and snap to points ON, no other snaps!

  2. Holding Shift at the same time drag the new line objects with the normal selection tool to bigger sizes to make a crossing

enter image description here

  1. With the anchor removal tool remove anchor B and with the anchor type conversion tool make C a corner point

  2. Drag C to the crossing of the lines with the direct selection tool

NOTE: This receipe is useless, if you literally want to find the point where the extensions of the handles meet, like in this:

enter image description here

Blue shape can be curved in both sides of B and C, but have tangents, at least one sided tangents. Finding those tangents need something smarter - for example a third party plugin. Check, if Astute Graphics has a good one. I haven't one.

Alternatively you can goto Inkscape. There's a path visualization extension "Draw handles" which really inserts to the image all handles as lines. It's no problem to extend them:

enter image description here

Then you can draw the exact needed add-on shape and make an union:

enter image description here

See image 1. Circles A,B,C and D contain the anchor points of the blue shape. Let's assume you want to continue straight line segments AB and DC to form a sharp corner.

enter image description here

  1. Draw lines AB and DC. To do it exactly have smart guides and snap to points ON, no other snaps!

  2. Holding Shift at the same time drag the new line objects with the normal selection tool to bigger sizes to make a crossing

enter image description here

  1. With the anchor removal tool remove anchor B and with the anchor type conversion tool make C a corner point

  2. Drag C to the crossing of the lines with the direct selection tool

NOTE: This receipe is useless, if you literally want to find the point where the extensions of the handles meet, like in this:

enter image description here

Blue shape can be curved in both sides of B and C, but have tangents, at least one sided tangents. Finding those tangents need something smarter - for example a third party plugin. Check, if Astute Graphics has a good one. I haven't one.

Alternatively you can goto Inkscape. There's a path visualization extension "Draw handles" which really inserts to the image all handles as lines. It's no problem to extend them:

enter image description here

See image 1. Circles A,B,C and D contain the anchor points of the blue shape. Let's assume you want to continue straight line segments AB and DC to form a sharp corner.

enter image description here

  1. Draw lines AB and DC. To do it exactly have smart guides and snap to points ON, no other snaps!

  2. Holding Shift at the same time drag the new line objects with the normal selection tool to bigger sizes to make a crossing

enter image description here

  1. With the anchor removal tool remove anchor B and with the anchor type conversion tool make C a corner point

  2. Drag C to the crossing of the lines with the direct selection tool

NOTE: This receipe is useless, if you literally want to find the point where the extensions of the handles meet, like in this:

enter image description here

Blue shape can be curved in both sides of B and C, but have tangents, at least one sided tangents. Finding those tangents need something smarter - for example a third party plugin. Check, if Astute Graphics has a good one. I haven't one.

Alternatively you can goto Inkscape. There's a path visualization extension "Draw handles" which really inserts to the image all handles as lines. It's no problem to extend them:

enter image description here

Then you can draw the exact needed add-on shape and make an union:

enter image description here

added 87 characters in body
Source Link
user82991
user82991

See image 1. Circles A,B,C and D contain the anchor points of the blue shape. Let's assume you want to continue straight line segments AB and DC to form a sharp corner.

enter image description here

  1. Draw lines AB and DC. To do it exactly have smart guides and snap to points ON, no other snaps!

  2. Holding Shift at the same time drag the new line objects with the normal selection tool to bigger sizes to make a crossing

enter image description here

  1. With the anchor removal tool remove anchor B and with the anchor type conversion tool make C a corner point

  2. Drag C to the crossing of the lines with the direct selection tool

NOTE: This receipe is useless, if you literally want to find the point where the extensions of the handles meet, like in this:

enter image description here

Blue shape can be curved in both sides of B and C, but have tangents, at least one sided tangents. Finding those tangents need something smarter - for example a third party plugin. Check, if Astute Graphics has a good one. I haven't one.

Alternatively you can goto Inkscape. There's a path visualization extension "Draw handles" which really inserts to the image all handles as lines. It's no problem to extend them.:

enter image description here

See image 1. Circles A,B,C and D contain the anchor points of the blue shape. Let's assume you want to continue straight line segments AB and DC to form a sharp corner.

enter image description here

  1. Draw lines AB and DC. To do it exactly have smart guides and snap to points ON, no other snaps!

  2. Holding Shift at the same time drag the new line objects with the normal selection tool to bigger sizes to make a crossing

enter image description here

  1. With the anchor removal tool remove anchor B and with the anchor type conversion tool make C a corner point

  2. Drag C to the crossing of the lines with the direct selection tool

NOTE: This receipe is useless, if you literally want to find the point where the extensions of the handles meet, like in this:

enter image description here

Blue shape can be curved in both sides of B and C, but have tangents, at least one sided tangents. Finding those tangents need something smarter - for example a third party plugin. Check, if Astute Graphics has a good one. I haven't one.

Alternatively you can goto Inkscape. There's a path visualization extension "Draw handles" which really inserts to the image all handles as lines. It's no problem to extend them.

See image 1. Circles A,B,C and D contain the anchor points of the blue shape. Let's assume you want to continue straight line segments AB and DC to form a sharp corner.

enter image description here

  1. Draw lines AB and DC. To do it exactly have smart guides and snap to points ON, no other snaps!

  2. Holding Shift at the same time drag the new line objects with the normal selection tool to bigger sizes to make a crossing

enter image description here

  1. With the anchor removal tool remove anchor B and with the anchor type conversion tool make C a corner point

  2. Drag C to the crossing of the lines with the direct selection tool

NOTE: This receipe is useless, if you literally want to find the point where the extensions of the handles meet, like in this:

enter image description here

Blue shape can be curved in both sides of B and C, but have tangents, at least one sided tangents. Finding those tangents need something smarter - for example a third party plugin. Check, if Astute Graphics has a good one. I haven't one.

Alternatively you can goto Inkscape. There's a path visualization extension "Draw handles" which really inserts to the image all handles as lines. It's no problem to extend them:

enter image description here

added 180 characters in body
Source Link
user82991
user82991

See image 1. Circles A,B,C and D contain the anchor points of the blue shape. Let's assume you want to continue straight line segments AB and DC to form a sharp corner.

enter image description here

  1. Draw lines AB and DC. To do it exactly have smart guides and snap to points ON, no other snaps!

  2. Holding Shift at the same time drag the new line objects with the normal selection tool to bigger sizes to make a crossing

enter image description here

  1. With the anchor removal tool remove anchor B and with the anchor type conversion tool make C a corner point

  2. Drag C to the crossing of the lines with the direct selection tool

NOTE: This receipe is useless, if you literally want to find the point where the extensions of the handles meet, like in this:

enter image description hereenter image description here

B and C are sharp corners, but have one sided tangents. Blue shape can be curved in both sides of B and C, but have tangents, at least one sided tangents. Finding those tangents need something smarter - for example a third party plugin. Check, if Astute Graphics has a good one. I haven't one.

Alternatively you can goto Inkscape. There's a path visualization extension "Draw handles" which really inserts to the image all handles as lines. It's no problem to extend them.

See image 1. Circles A,B,C and D contain the anchor points of the blue shape. Let's assume you want to continue straight line segments AB and DC to form a sharp corner.

enter image description here

  1. Draw lines AB and DC. To do it exactly have smart guides and snap to points ON, no other snaps!

  2. Holding Shift at the same time drag the new line objects with the normal selection tool to bigger sizes to make a crossing

enter image description here

  1. With the anchor removal tool remove anchor B and with the anchor type conversion tool make C a corner point

  2. Drag C to the crossing of the lines with the direct selection tool

NOTE: This receipe is useless, if you literally want to find the point where the extensions of the handles meet, like in this:

enter image description here

B and C are sharp corners, but have one sided tangents. Blue shape can be curved in both sides of B and C. Finding those tangents need something smarter - for example a third party plugin. Check, if Astute Graphics has a good one. I haven't one.

See image 1. Circles A,B,C and D contain the anchor points of the blue shape. Let's assume you want to continue straight line segments AB and DC to form a sharp corner.

enter image description here

  1. Draw lines AB and DC. To do it exactly have smart guides and snap to points ON, no other snaps!

  2. Holding Shift at the same time drag the new line objects with the normal selection tool to bigger sizes to make a crossing

enter image description here

  1. With the anchor removal tool remove anchor B and with the anchor type conversion tool make C a corner point

  2. Drag C to the crossing of the lines with the direct selection tool

NOTE: This receipe is useless, if you literally want to find the point where the extensions of the handles meet, like in this:

enter image description here

Blue shape can be curved in both sides of B and C, but have tangents, at least one sided tangents. Finding those tangents need something smarter - for example a third party plugin. Check, if Astute Graphics has a good one. I haven't one.

Alternatively you can goto Inkscape. There's a path visualization extension "Draw handles" which really inserts to the image all handles as lines. It's no problem to extend them.

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