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-- $Date: 2004/02/02 09:01:43 $
-- $Revision: 1.11 $
-- $Author: jcrocholl $
with Real_Numbers; use Real_Numbers;
with Real_Vectors; use Real_Vectors;
with Lines; use Lines;
-- Straight lines.
package Straights is
-- Straight line.
type Straight is new Line with null record;
-- Access type for straight lines.
type Straight_Access is access all Straight;
-- Create a straight line.
function Create
(To : in Vector) -- End point of the line.
return Line_Access; -- The newly created straight line.
-- Calculate the length of this line. Results are cached for
-- reuse. So make sure the starting point always remain the same
-- between calls.
function Length
(Start : in Vector; -- Starting point of the line.
This : access Straight) -- Get this line's length.
return Real; -- The distance from start to end point.
-- Scale a line by a given factor.
procedure Scale
(This : access Straight;
Factor : in Real);
-- Translate a line by a given offset.
procedure Translate
(This : access Straight; -- Translate this line.
Offset : in Vector); -- Translating offset.
-- Get one point from a straight line.
function Way_Point
(Start : in Vector; -- Starting point of the line.
This : access Straight; -- Definition of the line.
Part : in Real) -- Parametrization variable from 0 to 1.
return Vector; -- The point on the line.
-- Format a straight line for Scalable Vector Graphics output.
function To_SVG
(This : access Straight; -- Format this line.
Tolerance : in Real) -- Tolerance level.
return String; -- The resulting SVG code.
-- Format a straight line for postscript output.
function To_Postscript
(This : access Straight; -- Format this line.
Tolerance : in Real) -- Tolerance level.
return String; -- The resulting Postscript code.
end Straights;