GeglPath

Add a new flattener, the flattener should produce a type of path that GeglPath already understands, if the flattener is unable to flatten the incoming path (doesn’t understand the instructions), the original path should be returned.

Adds a new type to the path system, FIXME this should probably return something on registration conflicts, for now it expects all registered paths to be aware of each other.

Use as follows: gegl_path_append (path, ‘M’, 0.0, 0.0); and gegl_path_append (path, ‘C’, 10.0, 10.0, 50.0, 10.0, 60.0, 0.0) the number of arguments are determined from the instruction provided.

Compute the coordinates of the path at the position (length measured from start of path, not including discontinuities).

Compute num_samples for a path into the provided arrays xs and ys the returned values include the start and end positions of the path.

Compute a corresponding y coordinate for a given x input coordinate, returns 0 if computed correctly and -1 if the path doesn’t exist for the specified x coordinate.

Remove all nods from a path.

Figure out what and where on a path is closest to arbitrary coordinates.

Marks the path as dirty and issues an invalidation for the path rendering, use this if modifying the values of a GeglPathPoint inline.

Execute a provided function for every node in the path (useful for drawing and otherwise traversing a path.)

Execute a provided function for the segments of a poly line approximating the path.

Make the GeglPath stop firing signals as it changes must be paired with a gegl_path_thaw() for the signals to start again.

Compute the bounding box of a path.

Return a polyline version of path.

Returns the total length of the path.

Get the transformation matrix of the path.

Retrieves the number of nodes in the path.

Retrieve the node of the path at position pos.

Return the internal untouched GeglPathList.

Insert the new node node at position pos in path. if pos = -1, the node is added in the last position.

Check if the path contains any nodes.

Parses instructions and appends corresponding nodes to path (call gegl_path_clean() first if you want to replace the existing path.

Removes the node number pos in path.

Replaces the exiting node at position pos in path.

Set the transformation matrix of the path.

Restart firing signals (unless the path has been frozen multiple times).

Serialize the paths nodes to a string.