bug fixes and refinements.

annotation_series_test.go

@@ -55,9 +55,9 @@ func TestAnnotationSeriesMeasure(t *testing.T) {
 
 	box := as.Measure(r, cb, xrange, yrange, sd)
 	assert.False(box.IsZero())
-	assert.Equal(-5.0, box.Top)
+	assert.Equal(-3.0, box.Top)
 	assert.Equal(5.0, box.Left)
-	assert.Equal(146.0, box.Right) //the top,left annotation sticks up 5px and out ~44px.
+	assert.Equal(147.0, box.Right) //the top,left annotation sticks up 5px and out ~44px.
 	assert.Equal(115.0, box.Bottom)
 }
 
@@ -114,10 +114,10 @@ func TestAnnotationSeriesRender(t *testing.T) {
 	assert.True(isRaster)
 	assert.NotNil(rr)
 
-	c := rr.i.At(39, 70)
+	c := rr.i.At(38, 70)
 	converted, isRGBA := color.RGBAModel.Convert(c).(color.RGBA)
 	assert.True(isRGBA)
-	assert.Equal(3, converted.R)
-	assert.Equal(3, converted.G)
-	assert.Equal(3, converted.B)
+	assert.Equal(0, converted.R)
+	assert.Equal(0, converted.G)
+	assert.Equal(0, converted.B)
 }

chart.go

@@ -144,7 +144,7 @@ func (c Chart) getRanges() (xrange, yrange, yrangeAlt Range) {
 	} else {
 		xrange.Min = globalMinX
 		xrange.Max = globalMaxX
-		xrange.Min, xrange.Max = xrange.GetRoundedRangeBounds()
+		//xrange.Min, xrange.Max = xrange.GetRoundedRangeBounds()
 	}
 
 	if !c.YAxis.Range.IsZero() {
@@ -285,11 +285,14 @@ func (c Chart) getAxisAdjustedCanvasBox(r Renderer, canvasBox Box, xr, yr, yra R
 	return newBox
 }
 
-func (c Chart) setRangeDomains(canvasBox Box, xrange, yrange, yrangeAlt Range) (Range, Range, Range) {
-	xrange.Domain = canvasBox.Width
-	yrange.Domain = canvasBox.Height
-	yrangeAlt.Domain = canvasBox.Height
-	return xrange, yrange, yrangeAlt
+func (c Chart) setRangeDomains(canvasBox Box, xr, yr, yra Range) (xr2, yr2, yra2 Range) {
+	xr2.Min, xr2.Max = xr.Min, xr.Max
+	xr2.Domain = canvasBox.Width
+	yr2.Min, yr2.Max = yr.Min, yr.Max
+	yr2.Domain = canvasBox.Height
+	yra2.Min, yra2.Max = yra.Min, yra.Max
+	yra2.Domain = canvasBox.Height
+	return
 }
 
 func (c Chart) hasAnnotationSeries() bool {

range_test.go

@@ -8,8 +8,15 @@ import (
 
 func TestRangeTranslate(t *testing.T) {
 	assert := assert.New(t)
-	values := []float64{1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0}
+	values := []float64{1.0, 2.0, 2.5, 2.7, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0}
 	r := Range{Domain: 1000}
 	r.Min, r.Max = MinAndMax(values...)
-	assert.Equal(428, r.Translate(5.0))
+
+	// delta = ~7.0
+	// value = ~5.0
+	// domain = ~1000
+	// 5/8 * 1000 ~=
+	assert.Equal(0, r.Translate(1.0))
+	assert.Equal(1000, r.Translate(8.0))
+	assert.Equal(572, r.Translate(5.0))
 }

tick.go

@@ -3,7 +3,7 @@ package chart
 // GenerateTicksWithStep generates a set of ticks.
 func GenerateTicksWithStep(ra Range, step float64, vf ValueFormatter) []Tick {
 	var ticks []Tick
-	min, max := ra.GetRoundedRangeBounds()
+	min, max := ra.Min, ra.Max
 	for cursor := min; cursor <= max; cursor += step {
 		ticks = append(ticks, Tick{
 			Value: cursor,

tick_test.go

@@ -10,5 +10,5 @@ func TestGenerateTicksWithStep(t *testing.T) {
 	assert := assert.New(t)
 
 	ticks := GenerateTicksWithStep(Range{Min: 1.0, Max: 10.0, Domain: 100}, 1.0, FloatValueFormatter)
-	assert.Len(ticks, 9)
+	assert.Len(ticks, 10)
 }

vector_renderer_test.go

@@ -46,7 +46,7 @@ func TestVectorRendererMeasureText(t *testing.T) {
 	vr.SetFont(f)
 	vr.SetFontSize(12.0)
 
-	w, h := vr.MeasureText("Ljp")
-	assert.Equal(21, w)
-	assert.Equal(15, h)
+	tb := vr.MeasureText("Ljp")
+	assert.Equal(21, tb.Width)
+	assert.Equal(15, tb.Height)
 }

yaxis.go

@@ -122,10 +122,10 @@ func (ya YAxis) Render(r Renderer, canvasBox Box, ra Range, ticks []Tick) {
 	var tx int
 	if ya.AxisType == YAxisPrimary {
 		lx = canvasBox.Right
-		tx = canvasBox.Right + DefaultYAxisMargin
+		tx = lx + DefaultYAxisMargin
 	} else if ya.AxisType == YAxisSecondary {
 		lx = canvasBox.Left
-		tx = canvasBox.Left - DefaultYAxisMargin
+		tx = lx - DefaultYAxisMargin
 	}
 
 	r.MoveTo(lx, canvasBox.Bottom)