clip

type Op ¶

type Op struct {
	// contains filtered or unexported fields
}

Op sets the current clip to the intersection of the existing clip with this clip.

If you need to reset the clip to its previous values after applying a Op, use op.StackOp.

func (p Op) Add(o *op.Ops)

type Path ¶

type Path struct {
	// contains filtered or unexported fields
}

Path constructs a Op clip path described by lines and Bézier curves, where drawing outside the Path is discarded. The inside-ness of a pixel is determines by the even-odd rule, similar to the SVG rule of the same name.

Path generates no garbage and can be used for dynamic paths; path data is stored directly in the Ops list supplied to Begin.

func (p *Path) Begin(ops *op.Ops)

func (p *Path) Cube(ctrl0, ctrl1, to f32.Point)

func (p *Path) End() Op

func (p *Path) Line(delta f32.Point)

func (p *Path) Move(to f32.Point)

func (p *Path) Quad(ctrl, to f32.Point)

type Rect ¶

type Rect struct {
	Rect f32.Rectangle
	// The corner radii.
	SE, SW, NW, NE float32
}

Rect represents the clip area of a rectangle with rounded corners.The origin is in the upper left corner. Specify a square with corner radii equal to half the square size to construct a circular clip area.

func (rr Rect) Op(ops *op.Ops) Op