canvas

func (*Canvas) ArcTo ¶

func (c *Canvas) ArcTo(x, y, radiusX, radiusY, degStart, degEnd float64)

Draw an arc from the current point to (x, y) Can be used to easily draw a circle or an ellipse

func (*Canvas) Circle ¶

func (c *Canvas) Circle(cx, cy, r float64)

Draws an empty circle Fill the given circle with the fill color Stroke() each time to avoid connected circles

func (*Canvas) Clear ¶

func (c *Canvas) Clear()

Fill the whole canvas with the fill color

func (*Canvas) ClearRect ¶

func (c *Canvas) ClearRect(x1, y1, x2, y2 int)

Fill the given rectangle with the fill color

func (*Canvas) Ellipse ¶

func (c *Canvas) Ellipse(cx, cy, rx, ry float64)

Draws an empty ellipse Fill the given ellipse with the fill color Stroke() each time to avoid connected ellipses

func (*Canvas) Fill ¶

func (c *Canvas) Fill()

Fill the area inside the lines you've set up with LineTo, but don't draw the lines

func (*Canvas) FillStroke ¶

func (c *Canvas) FillStroke()

Fill the area inside the lines you've set up with LineTo

func (*Canvas) GetImage ¶

func (c *Canvas) GetImage() image.Image

func (*Canvas) Height ¶

func (c *Canvas) Height() int

Return the height of the canvas

func (*Canvas) LineTo ¶

func (c *Canvas) LineTo(x, y float64)

Draw a line from the current point to (x,y), and set the current point to (x,y)

func (*Canvas) MoveTo ¶

func (c *Canvas) MoveTo(x, y float64)

Move the current point to (x,y)

func (*Canvas) SaveToPNG ¶

func (c *Canvas) SaveToPNG(filename string)

Save the current canvas to a PNG file

func (*Canvas) SaveToPNG2 ¶

func (c *Canvas) SaveToPNG2(filename string)

func (*Canvas) SetFillColor ¶

func (c *Canvas) SetFillColor(col color.Color)

Set the fill color

func (*Canvas) SetLineWidth ¶

func (c *Canvas) SetLineWidth(w float64)

Set the line width

func (*Canvas) SetStrokeColor ¶

func (c *Canvas) SetStrokeColor(col color.Color)

Set the line color

func (*Canvas) Stroke ¶

func (c *Canvas) Stroke()

Actually draw the lines you've set up with LineTo

func (*Canvas) Width ¶

func (c *Canvas) Width() int

Return the width of the canvas