Curve class

Curves are edges that are part of a curve. The Curve class contains methods for getting information about a Curve (namely edge information for the curve).

Parent:Entity

Methods: count_edges, each_edge, edges, first_edge, last_edge, length, vertices

Example Code: curvetests.rb

Instance Methods

count_edges

The count_edges method is used to retrieve the number of Edge objects that make up the Curve.

Syntax

num_edge = curve.count_edges

Return Value

num_edges - the number of edges in the curve

Example

centerpoint = Geom::Point3d.new
# Create a circle perpendicular to the normal or Z axis
vector = Geom::Vector3d.new 0,0,1
vector2 = vector.normalize!
model = Sketchup.active_model
entities = model.active_entities   
edgearray = entities.add_circle centerpoint, vector2, 10
edge = edgearray[0]
curve = edge.curve
number = curve.count_edges

each_edge

The each_edge method is used to iterate through all of the Edge objects in the curve.

Syntax

curve.each_edge {|edge| ...}

Return Value

edge - a variable that will hold each Edge object as they are found.

Example

centerpoint = Geom::Point3d.new
# Create a circle perpendicular to the normal or Z axis
vector = Geom::Vector3d.new 0,0,1
vector2 = vector.normalize!
model = Sketchup.active_model
entities = model.active_entities   
edgearray = entities.add_circle centerpoint, vector2, 10
edge = edgearray[0]
curve = edge.curve
curve.each_edge {|e| UI.messagebox e}

edges

The edges method is used to retrieve an array of Edge objects  that make up the Curve.

Syntax

edges = curve.edges

Return Value

edges - an array of Edge objects if successful

Example

centerpoint = Geom::Point3d.new
# Create a circle perpendicular to the normal or Z axis
vector = Geom::Vector3d.new 0,0,1
vector2 = vector.normalize!
model = Sketchup.active_model
entities = model.active_entities   
edgearray = entities.add_circle centerpoint, vector2, 10
edge = edgearray[0]
curve = edge.curve
edges = curve.edges

first_edge

The first_edge method is used to retrieve the first edge of the curve.

Syntax

edge = curve.first_edge

Return Value

edge - the first Edge object in the curve if successful

Example

centerpoint = Geom::Point3d.new
# Create a circle perpendicular to the normal or Z axis
vector = Geom::Vector3d.new 0,0,1
vector2 = vector.normalize!
model = Sketchup.active_model
entities = model.active_entities   
edgearray = entities.add_circle centerpoint, vector2, 10
edge = edgearray[0]
curve = edge.curve
firstedge = curve.first_edge

last_edge

The last_edge method is used to retrieve the last edge of the curve.

Syntax

edge = curve.last_edge

Return Value

edge - the last Edge object in the curve if successful

Example

centerpoint = Geom::Point3d.new
# Create a circle perpendicular to the normal or Z axis
vector = Geom::Vector3d.new 0,0,1
vector2 = vector.normalize!
model = Sketchup.active_model
entities = model.active_entities   
edgearray = entities.add_circle centerpoint, vector2, 10
edge = edgearray[7]
curve = edge.curve
lastedge = curve.last_edge

length

The length method retrieves the length of the curve.

Syntax

length = curve.length

Return Value

length - the length of the curve in current units if successful

Example

centerpoint = Geom::Point3d.new
# Create a circle perpendicular to the normal or Z axis
vector = Geom::Vector3d.new 0,0,1
vector2 = vector.normalize!
model = Sketchup.active_model
entities = model.active_entities   
edgearray = entities.add_circle centerpoint, vector2, 10
edge = edgearray[7]
curve = edge.curve
length = curve.length

vertices

The vertices method is used to retrieve the Vertex objects that are on the curve.

Syntax

verticies = curve.verticies

Return Value

vertices - an array of Vertex objects if successful

Example

centerpoint = Geom::Point3d.new
# Create a circle perpendicular to the normal or Z axis
vector = Geom::Vector3d.new 0,0,1
vector2 = vector.normalize!
model = Sketchup.active_model
entities = model.active_entities   
edgearray = entities.add_circle centerpoint, vector2, 10
edge = edgearray[7]
curve = edge.curve
vertices = curve.vertices