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#include "clutter-perl-private.h"
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MODULE = Clutter::Cogl::Path PACKAGE = Clutter::Cogl::Path PREFIX = cogl_path_
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=for object Clutter::Cogl::Path - Path primitives for Cogl
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=for position DESCRIPTION
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There are three levels on which drawing with Clutter::Cogl can be used.
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The highest level functions construct various simple primitive shapes
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to be either filled or stroked. Using a lower-level set of functions
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more complex and arbitrary paths can be constructed by concatenating
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straight line, bezier curve and arc segments. Additionally there
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are utility functions that draw the most common primitives - rectangles
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and trapezoids - in a maximaly optimized fashion.
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When constructing arbitrary paths, the current pen location is
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initialized using the C< move_to > command. The subsequent path segments
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implicitly use the last pen location as their first vertex and move
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the pen location to the last vertex they produce at the end. Also
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there are special versions of functions that allow specifying the
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vertices of the path segments relative to the last pen location
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rather then in the absolute coordinates.
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Fills the constructed shape using the current drawing color
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cogl_path_fill (class=NULL)
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Fills the constructed shape using the current drawing color and
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preserves the path to be used again.
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cogl_path_fill_preserve (class=NULL)
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Strokes the constructed shape using the current drawing color
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and a width of 1 pixel (regardless of the current transformation
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cogl_path_stroke (class=NULL)
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Strokes the constructed shape using the current drawing color and
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preserves the path to be used again.
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cogl_path_stroke_preserve (class=NULL)
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Clears the current path and starts a new one.
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cogl_path_clear (class=NULL)
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Clears the previously constructed shape and begins a new path
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contour by moving the pen to the given coordinates
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cogl_path_move_to (class=NULL, float x, float y)
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Clears the previously constructed shape and begins a new path
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contour by moving the pen to the given coordinates relative
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to the current pen location
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cogl_path_rel_move_to (class=NULL, float x, float y)
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Adds a straight line segment to the current path that ends at the
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cogl_path_line_to (class=NULL, float x, float y)
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Adds a straight line segment to the current path that ends at the
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given coordinates relative to the current pen location
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cogl_path_rel_line_to (class=NULL, float x, float y)
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Adds an elliptical arc segment to the current path. A straight line
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segment will link the current pen location with the first vertex
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of the arc. If you perform a I<move_to> to the arc start just before
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drawing it you create a free standing arc.
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cogl_path_arc (class=NULL, center_x, center_y, radius_x, radius_y, angle_start, angle_end)
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center_x, center_y, radius_x, radius_y, angle_start, angle_end
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Adds a cubic bezier curve segment to the current path with the given
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second, third and fourth control points and using current pen location
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as the first control point.
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cogl_path_curve_to (class=NULL, x1, y1, x2, y2, x3, y3)
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x1, y1, x2, y2, x3, y3
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Adds a cubic bezier curve segment to the current path with the given
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second, third and fourth control points and using current pen location
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as the first control point. The given coordinates are relative to the
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cogl_path_rel_curve_to (class=NULL, x1, y1, x2, y2, x3, y3)
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x1, y1, x2, y2, x3, y3
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Closes the path being constructed by adding a straight line segment
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to it that ends at the first vertex of the path
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cogl_path_close (class=NULL)
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Clears the previously constructed shape and constructs a straight
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line shape start and ending at the given coordinates
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cogl_path_line (class=NULL, float x1, float y1, float x2, float y2)
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##Clears the previously constructed shape and constructs a series of straight
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##line segments, starting from the first given vertex coordinate. Each
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##subsequent segment stars where the previous one ended and ends at the next
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##given vertex coordinate.
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##I<coords> is a reference to an array containing the X and Y coordinates of
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##C<scalar @coords - 1> lines will be constructed.
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##cogl_path_polyline (class=NULL, SV *coords)
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##Clears the previously constructed shape and constructs a polygonal
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##shape of the given number of vertices.
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##I<coords> is a reference to an array containing the X and Y coordinates of
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##C<scalar @coords> lines will be constructed.
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##cogl_path_polygon (class=NULL, SV *coords)
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Clears the previously constructed shape and constructs a rectangular
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shape at the given coordinates
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cogl_path_rectangle (class=NULL, float x1, float y1, float x2, float y2)
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Clears the previously constructed shape and constructs an ellipse shape
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cogl_path_ellipse (class=NULL, float center_x, float center_y, float radius_x, float radius_y)
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center_x, center_y, radius_x, radius_y
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Clears the previously constructed shape and constructs a rectangular
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shape with rounded corners
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cogl_path_round_rectangle (class=NULL, x1, y1, x2, y2, radius, arc_step)
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x1, y1, x2, y2, radius, arc_step
added
removed
xs/CoglPath.xs
