Versions in this module Expand all Collapse all v2 v2.5.2 Aug 26, 2021 v2.5.1 Aug 26, 2021 v2.5.0 Aug 26, 2021 v2.4.6 Aug 5, 2021 v2.4.5 Aug 5, 2021 v2.4.4 Jul 28, 2021 v2.4.3 Jul 28, 2021 v2.4.2 Jul 28, 2021 v2.4.1 Jul 15, 2021 v2.4.0 Jun 27, 2021 v2.3.0 Jun 26, 2021 Changes in this version + const CurveRecursionLimit + const DefaultDPI + const HalignCenter + const HalignLeft + const HalignRight + var ColorBlack = Color + var ColorBlue = Color + var ColorGreen = Color + var ColorRed = Color + var ColorTransparent = Color + var ColorWhite = Color + func Bresenham(img draw.Image, color color.Color, x0, y0, x1, y1 int) + func ColorChannelFromFloat(v float64) uint8 + func DrawContour(path PathBuilder, ps []truetype.Point, dx, dy float64) + func DrawImage(src image.Image, dest draw.Image, tr Matrix, op draw.Op, filter ImageFilter) + func Flatten(path *Path, flattener Flattener, scale float64) + func PixelsToPoints(dpi, pixels float64) (points float64) + func PointsToPixels(dpi, points float64) (pixels float64) + func PolylineBresenham(img draw.Image, c color.Color, s ...float64) + func SubdivideCubic(c, c1, c2 []float64) + func SubdivideQuad(c, c1, c2 []float64) + func TraceArc(t Liner, x, y, rx, ry, start, angle, scale float64) (lastX, lastY float64) + func TraceCubic(t Liner, cubic []float64, flatteningThreshold float64) + func TraceQuad(t Liner, quad []float64, flatteningThreshold float64) + type Color struct + A uint8 + B uint8 + G uint8 + R uint8 + func ColorFromAlphaMixedRGBA(r, g, b, a uint32) Color + func ColorFromHex(hex string) Color + func (c Color) AverageWith(other Color) Color + func (c Color) Equals(other Color) bool + func (c Color) IsTransparent() bool + func (c Color) IsZero() bool + func (c Color) RGBA() (r, g, b, a uint32) + func (c Color) String() string + func (c Color) WithAlpha(a uint8) Color + type ContextStack struct + Cap LineCap + Dash []float64 + DashOffset float64 + FillColor color.Color + FillRule FillRule + Font *truetype.Font + FontSizePoints float64 + Join LineJoin + LineWidth float64 + Path *Path + Previous *ContextStack + Scale float64 + StrokeColor color.Color + Tr Matrix + type DashVertexConverter struct + func NewDashVertexConverter(dash []float64, dashOffset float64, flattener Flattener) *DashVertexConverter + func (dasher *DashVertexConverter) Close() + func (dasher *DashVertexConverter) End() + func (dasher *DashVertexConverter) LineJoin() + func (dasher *DashVertexConverter) LineTo(x, y float64) + func (dasher *DashVertexConverter) MoveTo(x, y float64) + type DemuxFlattener struct + Flatteners []Flattener + func (dc DemuxFlattener) Close() + func (dc DemuxFlattener) End() + func (dc DemuxFlattener) LineJoin() + func (dc DemuxFlattener) LineTo(x, y float64) + func (dc DemuxFlattener) MoveTo(x, y float64) + type FillRule int + const FillRuleEvenOdd + const FillRuleWinding + type Flattener interface + Close func() + End func() + LineJoin func() + LineTo func(x, y float64) + MoveTo func(x, y float64) + type FontExtents struct + Ascent float64 + Descent float64 + Height float64 + func Extents(font *truetype.Font, size float64) FontExtents + type FtLineBuilder struct + Adder raster.Adder + func (liner FtLineBuilder) Close() + func (liner FtLineBuilder) End() + func (liner FtLineBuilder) LineJoin() + func (liner FtLineBuilder) LineTo(x, y float64) + func (liner FtLineBuilder) MoveTo(x, y float64) + type GraphicContext interface + BeginPath func() + Clear func() + ClearRect func(x1, y1, x2, y2 int) + ComposeMatrixTransform func(tr Matrix) + CreateStringPath func(text string, x, y float64) (cursor float64) + DrawImage func(image image.Image) + Fill func(paths ...*Path) + FillString func(text string) (cursor float64) + FillStringAt func(text string, x, y float64) (cursor float64) + FillStroke func(paths ...*Path) + GetDPI func() int + GetFont func() *truetype.Font + GetFontSize func() float64 + GetMatrixTransform func() Matrix + GetStringBounds func(s string) (left, top, right, bottom float64) + Restore func() + Rotate func(angle float64) + Save func() + Scale func(sx, sy float64) + SetDPI func(dpi int) + SetFillColor func(c color.Color) + SetFillRule func(f FillRule) + SetFont func(f *truetype.Font) + SetFontSize func(fontSize float64) + SetLineCap func(cap LineCap) + SetLineDash func(dash []float64, dashOffset float64) + SetLineJoin func(join LineJoin) + SetLineWidth func(lineWidth float64) + SetMatrixTransform func(tr Matrix) + SetStrokeColor func(c color.Color) + Stroke func(paths ...*Path) + StrokeString func(text string) (cursor float64) + StrokeStringAt func(text string, x, y float64) (cursor float64) + Translate func(tx, ty float64) + type Halign int + type ImageFilter int + const BicubicFilter + const BilinearFilter + const LinearFilter + type ImageScaling struct + Halign Halign + Height float64 + ScalingPolicy ScalingPolicy + Valign Valign + Width float64 + type LineCap int + const ButtCap + const RoundCap + const SquareCap + type LineJoin int + const BevelJoin + const MiterJoin + const RoundJoin + type LineStroker struct + Cap LineCap + Flattener Flattener + HalfLineWidth float64 + Join LineJoin + func NewLineStroker(c LineCap, j LineJoin, flattener Flattener) *LineStroker + func (l *LineStroker) Close() + func (l *LineStroker) End() + func (l *LineStroker) LineJoin() + func (l *LineStroker) LineTo(x, y float64) + func (l *LineStroker) MoveTo(x, y float64) + type Liner interface + LineTo func(x, y float64) + type Matrix [6]float64 + func NewIdentityMatrix() Matrix + func NewMatrixFromRects(rectangle1, rectangle2 [4]float64) Matrix + func NewRotationMatrix(angle float64) Matrix + func NewScaleMatrix(sx, sy float64) Matrix + func NewTranslationMatrix(tx, ty float64) Matrix + func (tr *Matrix) Compose(trToCompose Matrix) + func (tr *Matrix) Inverse() + func (tr *Matrix) Rotate(radians float64) + func (tr *Matrix) Scale(sx, sy float64) + func (tr *Matrix) Translate(tx, ty float64) + func (tr Matrix) Copy() Matrix + func (tr Matrix) Determinant() float64 + func (tr Matrix) Equals(tr2 Matrix) bool + func (tr Matrix) GetScale() float64 + func (tr Matrix) GetScaling() (x, y float64) + func (tr Matrix) GetTranslation() (x, y float64) + func (tr Matrix) InverseTransform(points []float64) + func (tr Matrix) InverseTransformPoint(x, y float64) (xres, yres float64) + func (tr Matrix) IsIdentity() bool + func (tr Matrix) IsTranslation() bool + func (tr Matrix) Transform(points []float64) + func (tr Matrix) TransformPoint(x, y float64) (xres, yres float64) + func (tr Matrix) TransformRectangle(x0, y0, x2, y2 float64) (nx0, ny0, nx2, ny2 float64) + func (tr Matrix) VectorTransform(points []float64) + type Painter interface + SetColor func(color color.Color) + type Path struct + Components []PathComponent + Points []float64 + func (p *Path) ArcTo(cx, cy, rx, ry, startAngle, delta float64) + func (p *Path) Clear() + func (p *Path) Close() + func (p *Path) Copy() (dest *Path) + func (p *Path) CubicCurveTo(cx1, cy1, cx2, cy2, x, y float64) + func (p *Path) IsEmpty() bool + func (p *Path) LastPoint() (x, y float64) + func (p *Path) LineTo(x, y float64) + func (p *Path) MoveTo(x, y float64) + func (p *Path) QuadCurveTo(cx, cy, x, y float64) + func (p *Path) String() string + type PathBuilder interface + ArcTo func(cx, cy, rx, ry, startAngle, angle float64) + Close func() + CubicCurveTo func(cx1, cy1, cx2, cy2, x, y float64) + LastPoint func() (x, y float64) + LineTo func(x, y float64) + MoveTo func(x, y float64) + QuadCurveTo func(cx, cy, x, y float64) + type PathComponent int + const ArcToComponent + const CloseComponent + const CubicCurveToComponent + const LineToComponent + const MoveToComponent + const QuadCurveToComponent + type RasterGraphicContext struct + DPI float64 + func NewRasterGraphicContext(img draw.Image) (*RasterGraphicContext, error) + func NewRasterGraphicContextWithPainter(img draw.Image, painter Painter) *RasterGraphicContext + func (rgc *RasterGraphicContext) Clear() + func (rgc *RasterGraphicContext) ClearRect(x1, y1, x2, y2 int) + func (rgc *RasterGraphicContext) CreateStringPath(s string, x, y float64) (cursor float64, err error) + func (rgc *RasterGraphicContext) DrawImage(img image.Image) + func (rgc *RasterGraphicContext) Fill(paths ...*Path) + func (rgc *RasterGraphicContext) FillString(text string) (cursor float64, err error) + func (rgc *RasterGraphicContext) FillStringAt(text string, x, y float64) (cursor float64, err error) + func (rgc *RasterGraphicContext) FillStroke(paths ...*Path) + func (rgc *RasterGraphicContext) GetDPI() float64 + func (rgc *RasterGraphicContext) GetFont() *truetype.Font + func (rgc *RasterGraphicContext) GetStringBounds(s string) (left, top, right, bottom float64, err error) + func (rgc *RasterGraphicContext) SetDPI(dpi float64) + func (rgc *RasterGraphicContext) SetFont(font *truetype.Font) + func (rgc *RasterGraphicContext) SetFontSize(fontSizePoints float64) + func (rgc *RasterGraphicContext) Stroke(paths ...*Path) + func (rgc *RasterGraphicContext) StrokeString(text string) (cursor float64, err error) + func (rgc *RasterGraphicContext) StrokeStringAt(text string, x, y float64) (cursor float64, err error) + type ScalingPolicy int + const ScalingFill + const ScalingFit + const ScalingHeight + const ScalingNone + const ScalingSameArea + const ScalingStretch + const ScalingWidth + type SegmentedPath struct + Points []float64 + func (p *SegmentedPath) Close() + func (p *SegmentedPath) End() + func (p *SegmentedPath) LineJoin() + func (p *SegmentedPath) LineTo(x, y float64) + func (p *SegmentedPath) MoveTo(x, y float64) + type SolidFillStyle struct + Color color.Color + FillRule FillRule + type StackGraphicContext struct + func NewStackGraphicContext() *StackGraphicContext + func (gc *StackGraphicContext) ArcTo(cx, cy, rx, ry, startAngle, delta float64) + func (gc *StackGraphicContext) BeginPath() + func (gc *StackGraphicContext) Close() + func (gc *StackGraphicContext) ComposeMatrixTransform(tr Matrix) + func (gc *StackGraphicContext) CubicCurveTo(cx1, cy1, cx2, cy2, x, y float64) + func (gc *StackGraphicContext) GetFont() *truetype.Font + func (gc *StackGraphicContext) GetFontSize() float64 + func (gc *StackGraphicContext) GetMatrixTransform() Matrix + func (gc *StackGraphicContext) IsEmpty() bool + func (gc *StackGraphicContext) LastPoint() (x float64, y float64) + func (gc *StackGraphicContext) LineTo(x, y float64) + func (gc *StackGraphicContext) MoveTo(x, y float64) + func (gc *StackGraphicContext) QuadCurveTo(cx, cy, x, y float64) + func (gc *StackGraphicContext) Restore() + func (gc *StackGraphicContext) Rotate(angle float64) + func (gc *StackGraphicContext) Save() + func (gc *StackGraphicContext) Scale(sx, sy float64) + func (gc *StackGraphicContext) SetFillColor(c color.Color) + func (gc *StackGraphicContext) SetFillRule(f FillRule) + func (gc *StackGraphicContext) SetFont(f *truetype.Font) + func (gc *StackGraphicContext) SetFontSize(fontSizePoints float64) + func (gc *StackGraphicContext) SetLineCap(cap LineCap) + func (gc *StackGraphicContext) SetLineDash(dash []float64, dashOffset float64) + func (gc *StackGraphicContext) SetLineJoin(join LineJoin) + func (gc *StackGraphicContext) SetLineWidth(lineWidth float64) + func (gc *StackGraphicContext) SetMatrixTransform(tr Matrix) + func (gc *StackGraphicContext) SetStrokeColor(c color.Color) + func (gc *StackGraphicContext) Translate(tx, ty float64) + type StrokeStyle struct + Color color.Color + Dash []float64 + DashOffset float64 + LineCap LineCap + LineJoin LineJoin + Width float64 + type TextStyle struct + Color color.Color + Font *truetype.Font + Halign Halign + Size float64 + Valign Valign + type Transformer struct + Flattener Flattener + Tr Matrix + func (t Transformer) Close() + func (t Transformer) End() + func (t Transformer) LineJoin() + func (t Transformer) LineTo(x, y float64) + func (t Transformer) MoveTo(x, y float64) + type Valign int + const ValignBaseline + const ValignBottom + const ValignCenter + const ValignTop Other modules containing this package github.com/userstyles-world/go-chart
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