View Source
const (
	Unknown = iota


This section is empty.


This section is empty.


type Axis

type Axis int
const (
	Horizontal Axis = iota

type CleanupTransform

type CleanupTransform struct {
	Precision int

func (CleanupTransform) PathTransform

func (st CleanupTransform) PathTransform(p path.Path) (path.Path, error)

    cleans up the path. 1. make sure the first operation is a move 2. Insert a Move if the segment Start is not the same as the segment end of the


    3. align start and end if they are not equal, but within precision 4. Check for NaN

    type DedupSegmentsTransform

    type DedupSegmentsTransform struct {
    	Precision int

    func (DedupSegmentsTransform) PathTransform

    func (st DedupSegmentsTransform) PathTransform(p path.Path) (path.Path, error)

      this will remove any redundant operations. currently: 1. collapse multiple MOVEs in a row 2. Remove a MOVE to the current location 3. if prev segment is the same as the reverse of the current segment, remove both

      TODO: should this be split into a its own transform? I wonder if this is ever the intent?

      type HSliceTransform

      type HSliceTransform struct {
      	Y                float64
      	SegmentOperators path.SegmentOperators
      	Precision        int

        Cut the path horizontally at the given Y coordinate, removes everything above Y

        func (HSliceTransform) PathTransform

        func (hs HSliceTransform) PathTransform(p path.Path) (path.Path, error)

        type JoinTransform

        type JoinTransform struct {
        	Precision        int
        	SegmentOperators path.SegmentOperators
        	// should we close the path?
        	ClosePath bool

          connects any disjoint segments as smoothly as possible

          func (JoinTransform) PathTransform

          func (jt JoinTransform) PathTransform(pth path.Path) (path.Path, error)

          type MatrixTransform

          type MatrixTransform struct {
          	A, B, C, D, E, F float64
          	SegmentOperators path.SegmentOperators

            A basic affine (matrix) transform see:

            func (MatrixTransform) PathTransform

            func (mt MatrixTransform) PathTransform(p path.Path) (path.Path, error)

            func (MatrixTransform) TransformPoint

            func (mt MatrixTransform) TransformPoint(p path.Point) path.Point

            type MirrorTransform

            type MirrorTransform struct {
            	Axis             Axis
            	Handle           path.PathAttr
            	SegmentOperators path.SegmentOperators

              This moves the path origin to the requested point

              func (MirrorTransform) PathTransform

              func (mt MirrorTransform) PathTransform(p path.Path) (path.Path, error)

              type MoveTransform

              type MoveTransform struct {
              	Point path.Point
              	// if a handle is specified, than this move operation will move the
              	// handle to the requested point. by default the handle is the topleft
              	Handle           path.PathAttr
              	SegmentOperators path.SegmentOperators

                This moves the path origin to the requested point

                func (MoveTransform) PathTransform

                func (mt MoveTransform) PathTransform(p path.Path) (path.Path, error)

                type OffsetTransform

                type OffsetTransform struct {
                	Precision        int
                	Distance         float64
                	SegmentOperators path.SegmentOperators
                	SizeShouldBe     SizeShouldBe

                func (OffsetTransform) PathTransform

                func (ofs OffsetTransform) PathTransform(p path.Path) (path.Path, error)

                  Transforms the path into an offset path at distance If distance is 0 than this transform does nothing.

                  type PathReverse

                  type PathReverse struct {

                  func (PathReverse) PathTransform

                  func (pr PathReverse) PathTransform(p path.Path) (path.Path, error)

                  type RebuildTransform

                  type RebuildTransform struct{}

                  func (RebuildTransform) PathTransform

                  func (st RebuildTransform) PathTransform(p path.Path) (path.Path, error)

                    Simple transform to rebuild the path. this dumps the path to a string and reparses mostly this is for cleaning datastructure problems from other transforms (I.E internal changes mean start and end points don't align)

                    type ReorderTransform

                    type ReorderTransform struct {
                    	Precision int

                    func (ReorderTransform) PathTransform

                    func (st ReorderTransform) PathTransform(p path.Path) (path.Path, error)

                      Transform that will reorder any sections that start and end at the same place

                      type RotateScaleTransform

                      type RotateScaleTransform struct {
                      	StartPoint path.Point
                      	EndPoint   path.Point
                      	// What point on the path should be considered origin?
                      	// defaults to path start
                      	PathStartPoint path.Point
                      	// What point on the path should be considered the end?
                      	// defaults to path end
                      	PathEndPoint     path.Point
                      	SegmentOperators path.SegmentOperators

                        Will rotate and scale the path so that the PathStartPoint and PathEndPoint equal StartPoint and EndPoint. This is useful for using svg to connect two points

                        func (RotateScaleTransform) PathTransform

                        func (rt RotateScaleTransform) PathTransform(p path.Path) (path.Path, error)

                        type RotateTransform

                        type RotateTransform struct {
                        	Degrees          float64
                        	Axis             path.PathAttr
                        	SegmentOperators path.SegmentOperators

                        func (RotateTransform) PathTransform

                        func (rt RotateTransform) PathTransform(p path.Path) (path.Path, error)

                        func (RotateTransform) PathTransformWithAxis

                        func (rt RotateTransform) PathTransformWithAxis(pth path.Path, axisPoint path.Point) (path.Path, error)

                        type ScaleTransform

                        type ScaleTransform struct {
                        	ScaleX float64
                        	ScaleY float64
                        	// TODO: Scaling by start and end point should
                        	// use the rotate_scale transform.
                        	StartPoint       path.Point
                        	EndPoint         path.Point
                        	Width            float64
                        	Height           float64
                        	SegmentOperators path.SegmentOperators

                          This changes the size and proportions of the given path

                          func (ScaleTransform) PathTransform

                          func (st ScaleTransform) PathTransform(p path.Path) (path.Path, error)

                          type SegmentReverse

                          type SegmentReverse struct {

                          func (SegmentReverse) SegmentTransform

                          func (s SegmentReverse) SegmentTransform(segment path.Segment) path.Segment

                            Reverses a single segment. Note that this flips the segment, but will need a Move to start if you expect it to render properly within a path

                            type ShiftTransform

                            type ShiftTransform struct {
                            	DeltaX           float64
                            	DeltaY           float64
                            	SegmentOperators path.SegmentOperators

                              This shifts the path by the requested amount in X and/or Y

                              func (ShiftTransform) PathTransform

                              func (st ShiftTransform) PathTransform(p path.Path) (path.Path, error)

                              type SimpleJoin

                              type SimpleJoin struct {

                              func (SimpleJoin) JoinPaths

                              func (sj SimpleJoin) JoinPaths(paths ...path.Path) path.Path

                              type SizeShouldBe

                              type SizeShouldBe int

                              type TrimWhitespaceTransform

                              type TrimWhitespaceTransform struct {
                              	SegmentOperators path.SegmentOperators

                              func (TrimWhitespaceTransform) PathTransform

                              func (tw TrimWhitespaceTransform) PathTransform(p path.Path) (path.Path, error)

                                PathTransform trims any whitespace by moving the path to as close to 0,0 as possible. Note that you should typically call simplify before triming whitespace to avoid things like M 0 0, M 10, 11