func (tee teeCanvas) Translate(pt Point) {
	for _, c := range tee.cs {
		c.Translate(pt)
	}
}
Translate applies a translational transform to the context.
package vg
import (
	"image"
	"image/color"
	"gonum.org/v1/plot/font"
)
func MultiCanvas(cs ...Canvas) Canvas {
	return teeCanvas{cs}
}
type teeCanvas struct {
	cs []Canvas
}
func (tee teeCanvas) SetLineWidth(w Length) {
	for _, c := range tee.cs {
		c.SetLineWidth(w)
	}
}
func (tee teeCanvas) SetLineDash(pattern []Length, offset Length) {
	for _, c := range tee.cs {
		c.SetLineDash(pattern, offset)
	}
}
func (tee teeCanvas) SetColor(c color.Color) {
	for _, canvas := range tee.cs {
		canvas.SetColor(c)
	}
}
func (tee teeCanvas) Rotate(rad float64) {
	for _, c := range tee.cs {
		c.Rotate(rad)
	}
}