6.6 DUIM-Graphics Module
curve-to
Generic function
Summary
Draws a curve through three specified points in the current path on the specified drawable.
Signature
curve-to drawable x1 y1 x2 y2 x3 y3 => ()
curve-to* drawable point1 point2 point3 => ()
Arguments
The following arguments are specific to curve-to.
- x1
- An instance of type
<real>. - y1
- An instance of type
<real>. - x2
- An instance of type
<real>. - y2
- An instance of type
<real>. - x3
- An instance of type
<real>. - y3
- An instance of type
<real>.
The following arguments are specific to curve-to*.
- point1
- An instance of type
<transform>. - point2
- An instance of type
<transform>. - point3
- An instance of type
<transform>.
Values
- None.
Library
duim-graphics
Module
duim-graphics
Description
Draws a curve in the current path on drawable starting from the current position, and passing through (x1,y1), (x2, y2), and (x3, y3).
This function is used, in combination with line-to, move-to, and arc-to, to define a path. The function start-path should be used to start the definition of the path, and end-path can be used to finish the definition.
The function curve-to* is identical to curve-to, except that it passes composite objects, rather than separate coordinates, in its arguments. You should be aware that using this function may lead to a loss of performance.