Polyline Class

Initializes a new empty polyline.

Initializes a new polyline from a collection of points.

Initializes a new empty polyline with an initial capacity.

Even though this is a property, it is not a "fast" calculation. Every point is evaluated in order to get the bounding box of the list.

Gets or sets the total number of elements the internal data structure can hold without resizing.

Gets the number of elements actually contained in the List.

Gets or sets the first item in the list. This is synonymous to calling List[0].

Test a polyline to see if it is closed.

Gets a value that indicates whether this polyline is valid.

Valid polylines have at least one segment, no Invalid points and no zero length segments.

Closed polylines with only two segments are also not considered valid.

Gets or sets the element at the specified index.

Gets or sets the last item in the list. This is synonymous to calling List[Count-1].

Gets the total length of the polyline.

Gets the number of null references (Nothing in Visual Basic) in this list. If T is a ValueType, this property always return zero.

Gets the number of segments for this polyline.

Returns an indexer with all X coordinates in this list.

Returns an indexer with all Y coordinates in this list.

Returns an indexer with all Z coordinates in this list.

Adds an object to the end of the List.

Adds a Point3d to the end of the list with given x,y,z coordinates.

Adds the elements of the specified collection to the end of the List.

Adds the elements of the specified collection to the end of the List.

Constructs a read-only wrapper of this class.

Searches the entire sorted List for an element using the default comparer and returns the zero-based index of the element.

Searches the entire sorted List for an element using the specified comparer and returns the zero-based index of the element.

Searches the entire sorted List for an element using the specified comparer and returns the zero-based index of the element.

Breaks this polyline into sections at sharp kinks. Closed polylines will also be broken at the first and last vertex.

Compute the center point of the polyline as the weighted average of all segments.

Removes all elements from the List.

Finds the index of the point that is closest to a test point in this list.

Gets the parameter along the polyline which is closest to a test-point.

Gets the point on the polyline which is closest to a test-point.

Collapses all segments until none are shorter than tolerance. This function is significantly slower than DeleteShortSegments, since it recursively operates on the shortest segment. When a segment is collapsed the end-points are placed in the center of the segment.

Determines whether an element is in the List.

Aggregates all results of a conversion function over this table into a new list.

Copies the entire List to a compatible one-dimensional array, starting at the beginning of the target array.

Copies the entire List to a compatible one-dimensional array, starting at the specified index of the target array.

Copies a range of elements from the List to a compatible one-dimensional array, starting at the specified index of the target array.

Creates polylines by joining lines.

Create a regular polygon circumscribe about a circle. The midpoints of the polygon's edges will be tangent to the circle.

Create a regular polygon inscribed in a circle. The vertices of the polygon will be on the circle.

Create a regular star polygon. The star begins at circle.PointAt(0) and the vertices alternate between being on circle and begin on a concentric circle of other_radius.

Removes all points that are closer than tolerance to the previous point.

Start and end points are left intact.

Returns a deep copy of this polyline instance.

Overrides the default object equality to compare lists by value.

Determines if the point lists are exactly equal.

Determines whether the List contains elements that match the conditions defined by the specified predicate.

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.

Searches for an element that matches the conditions defined by the specified predicate, and returns the first occurrence within the entire List.

Retrieves all the elements that match the conditions defined by the specified predicate.

Searches for an element that matches the conditions defined by the specified predicate, and returns the zero-based index of the first occurrence within the entire List.

Searches for an element that matches the conditions defined by the specified predicate, and returns the zero-based index of the first occurrence within the entire List.

Searches for an element that matches the conditions defined by the specified predicate, and returns the zero-based index of the first occurrence within the range of elements in the List that extends from the specified index to the last element.

Searches for an element that matches the conditions defined by the specified predicate, and returns the last occurrence within the entire List.

Searches for an element that matches the conditions defined by the specified predicate, and returns the zero-based index of the last occurrence within the entire List.

Searches for an element that matches the conditions defined by the specified predicate, and returns the zero-based index of the last occurrence within the entire List.

Searches for an element that matches the conditions defined by the specified predicate, and returns the zero-based index of the last occurrence within the entire List.

Performs the specified action on each element of the List.

Constructs an enumerator that is capable of iterating over all items in this list.

Creates a hash code for this object.

Constructs a shallow copy of a range of elements in the source List.

Constructs an array of line segments that make up the entire polyline.

Gets the Type of the current instance.

Searches for the specified object and returns the zero-based index of the first occurrence within the entire List.

Searches for the specified object and returns the zero-based index of the first occurrence within the range of elements in the List that extends from the specified index to the last element.

Searches for the specified object and returns the zero-based index of the first occurrence within the range of elements in the List that starts at the specified index and contains the specified number of elements.

Inserts an element into the List at the specified index.

Inserts the elements of a collection into the List at the specified index.

Test a polyline to see if it is closed.

Searches for the specified object and returns the zero-based index of the last occurrence within the entire List.

Searches for the specified object and returns the zero-based index of the last occurrence within the range of elements in the List that extends from the first element to the specified index.

Searches for the specified object and returns the zero-based index of the last occurrence within the range of elements in the List that contains the specified number of elements and ends at the specified index.

Creates a shallow copy of the current Object.

Merge co-linear consecutive segments in a polyline. This method will automatically remove any zero-length segments as well.

Gets the point on the polyline at the given parameter. The integer part of the parameter indicates the index of the segment.

Constructs a reduction of this polyline by recursively removing the least significant segments.

Remap an index in the infinite range onto the List index range.

Removes the first occurrence of a specific object from the List.

Removes the all the elements that match the conditions defined by the specified predicate.

Removes the element at the specified index of the List.

Removes one copy of a point that is equal to the previous or later point, by an absolute tolerance factor.

Removes all elements from the List that are null references (Nothing in Visual Basic). This function will not do anything if T is not a Reference type.

Removes a range of elements from the List.

Reverses the order of the elements in the entire List.

Reverses the order of the elements in the specified range.

Gets the line segment at the given index.

Set all the X values for the points to a single value

Set all the Y values for the points to a single value

Set all the Z values for the points to a single value

Smoothen the polyline segments by averaging adjacent vertices. Smoothing requires a polyline with exclusively valid vertices.

Sorts the elements in the entire List using the default comparer.

Sorts the elements in the entire list using the specified comparer.

Sort this list based on a list of numeric keys of equal length. The keys array will not be altered.

Sorts the elements in the entire list using the specified System.Comparison(T)

Sort this list based on a list of numeric keys of equal length. The keys array will not be altered.

Sorts the elements in a range of elements in list using the specified comparer.

Gets the unit tangent vector along the polyline at the given parameter. The integer part of the parameter indicates the index of the segment.

Constructs an array that contains all items in this list.

Constructs a nurbs curve representation of this polyline.

Constructs a polyline curve representation of this polyline.

Returns a string that represents the current object.

Applies a transform to all the points in the list.

Attempts to create a list of triangles which represent a triangulation of a closed polyline

Constructs a polyline out of a parameter sub-domain in this curve.

Sets the capacity to the actual number of elements in the List, if that number is less than a threshold value.

Determines whether every element in the List matches the conditions defined by the specified predicate.