circle tangent shape seems to have an error in the formula

[jproud]

There seems to be an error in the scratch.A1 cell of the "Circle Tangents"
shape. When the circles have sizes that are not very similar, the tangents
seem to be off.

The formula in the shipping shapes is: ATAN2(Scratch.X1-Scratch.Y1,Width)
A formula that seems to work better is: ASIN((Scratch.X1-Scratch.Y1)/Width)

Has anyone else noticed this?

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[Paul Herber]

There seems to be an error in the scratch.A1 cell of the "Circle Tangents"
shape. When the circles have sizes that are not very similar, the tangents
seem to be off.

The formula in the shipping shapes is: ATAN2(Scratch.X1-Scratch.Y1,Width)
A formula that seems to work better is: ASIN((Scratch.X1-Scratch.Y1)/Width)

Has anyone else noticed this?

You appear to be correct. Visio 2007 Beta.
It took me a while to find the appropriate shape, it's in the Drawing
Tool Shapes stencil.

 

[John Marshall, MVP]

Did you file this as a bug?

John... Visio MVP

Need stencils or ideas? http://visio.mvps.org/3rdparty.htm
Need VBA examples? http://visio.mvps.org/VBA.htm
Visio Wishlist http://visio.mvps.org/wish_list.htm

 

[Paul Herber]

I've reported a few Visio bugs in the past but as I've never even had
an acknowledgement ....

Did you file this as a bug?

John... Visio MVP

Need stencils or ideas? http://visio.mvps.org/3rdparty.htm
Need VBA examples? http://visio.mvps.org/VBA.htm
Visio Wishlist http://visio.mvps.org/wish_list.htm