Esempio n. 1
0
File: vis.go Progetto: jvlmdr/go-cv 
func drawOrientedLine(gc *draw2d.ImageGraphicContext, x, y float64, theta float64, r float64) {
	c := math.Cos(theta)
	s := math.Sin(theta)
	gc.MoveTo(x-r*c, y-r*s)
	gc.LineTo(x+r*c, y+r*s)
	gc.Stroke()
}
Esempio n. 2
0
func WhiteBG(gc *draw2d.ImageGraphicContext, xsize, ysize float64) {
	gc.BeginPath()
	gc.MoveTo(0, 0)
	gc.LineTo(xsize, 0)
	gc.LineTo(xsize, ysize)
	gc.LineTo(0, ysize)
	gc.LineTo(0, 0)
	gc.Close()
	gc.SetFillColor(color.RGBA{255, 255, 255, 0xff})
	gc.Fill()

}
Esempio n. 3
0
func DrawLine(gc *draw2d.ImageGraphicContext, x1, y1, x2, y2 float64) {
	gc.MoveTo(x1, y1)
	gc.LineTo(x2, y2)
	gc.FillStroke()
}