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func (*Canvas) CurrentDrawColor ¶

func (c *Canvas) CurrentDrawColor() color.Color

CurrentDrawColor 返回当前的颜色

func (*Canvas) DrawHollowCircle ¶

func (c *Canvas) DrawHollowCircle(center draw.Point, radius, width float64)

DrawHollowCircle 绘制一个空心圆

func (*Canvas) DrawHollowPolygon ¶

func (c *Canvas) DrawHollowPolygon(width float64, endpoints ...draw.Point)

DrawHollowPolygon 绘制一个空心多边形

func (*Canvas) DrawHollowRect ¶

func (c *Canvas) DrawHollowRect(from, to draw.Point, width float64)

DrawHollowRect 绘制一个空心矩形

func (*Canvas) DrawLine ¶

func (c *Canvas) DrawLine(from, to draw.Point, width float64)

DrawLine 绘制一条线

func (*Canvas) DrawPoint ¶

func (c *Canvas) DrawPoint(center draw.Point, radius float64)

DrawPoint 绘制一个实心圆

func (*Canvas) DrawSolidPolygon ¶

func (c *Canvas) DrawSolidPolygon(endpoints ...draw.Point)

DrawHollowPolygon 绘制一个空心多边形

func (*Canvas) DrawSolidRect ¶

func (c *Canvas) DrawSolidRect(from, to draw.Point)

DrawSolidRect 绘制一个实心矩形

func (*Canvas) DrawText ¶

func (c *Canvas) DrawText(origin draw.Point, text string, opts ...draw.Option)

func (*Canvas) Save ¶

func (c *Canvas) Save(filepath string) error

Save 关闭并保存到文件

func (*Canvas) SetDrawColor ¶

func (c *Canvas) SetDrawColor(clr color.Color)

SetDrawColor 设置后续的绘制颜色

func (*Canvas) Size ¶

func (c *Canvas) Size() (width, height float64)

Size 返回画布大小