Solids Builder - Tangent Vector

Tangent Vector - creates a vector tangent to a Curve, given a reference value:

Vectors are auxiliary tools for drawing various types of objects. For example, to draw a Circle, you need the center, radius and also the coordinates vector normal to the plan on which the circle is drawn:

The Tangent Vector activity has the following properties:

• Identification
  • Name - vector name
    The vector name must follow the naming rules
  • Path Entity - Indicates which curve will be used to calculate the tangent
  • Visible Object - indicates whether or not the point should be drawn in the preview
  • The Value is - indicates what type of value is provided to calculate the point, it can be:
    • Distance - 3D distance on the line from the start of the line. In the example above, I used a VB expression:
      Line. Length / 2
      
    • Parameter - is a number, whose entire part refers to the vertex number and the fractional part refers to the percentage of the segment subsequent to this vertex
      in a polyline, parameter 1.55 would be in the second segment (the first segment has a ZERO index), counting 55% of the length of this segment:
    • Point - another point, not necessarily on the curve
      The point closest to the curve will be calculated
      
  • Value - a VB expression that provides value for calculating the tangent vector on the curve

In the example bellow, the point C is a Point on the Curve

If the text is too big/small, or the sphere representing the point is too big or small, use the buttons( A, a, , ) at the top of the screen to change the preview