NumberLineMorph
Last updated at 7:37 am UTC on 10 November 2020
NumberLineMorph subclass: #HorizontalNumberLineMorph
instanceVariableNames: ''
classVariableNames: ''
poolDictionaries: ''
category: 'Etoys-Squeakland-MorphicExtras-Charts'
An abstract superclass for VerticalNumberLine and HorizontalNumberLine.
minValue - Number - the value corresponding to the left edge of the line.
pixelsPerUnit - Integer - the number of pixels on the graph that correspond to a single unit in the metric space of the line.
actualColor - the color borne by the axis
axis - a two-vertex PolygonMorph which is the actual line
showZero - Boolean - if false, then a 0 legend will not be show.
NumberLineMorph subclasses
{HorizontalNumberLineMorph . VerticalNumberLineMorph}
c := Color white. w := 650.
container := Morph newBounds: (0@0 extent: w@200) color: c.
container layoutPolicy: TableLayout new.
container listDirection: #topToBottom.
m := Morph newBounds: (0@0 extent: w@50) color: c.
m2 := (HorizontalNumberLineMorph from: 0 pixelsPerUnit: 50 unitsPerMark: 1 marksPerLegend: 1) update.
m addMorphBack: m2.
container addMorphBack: m.
m := Morph newBounds: (0@0 extent: w@50) color: c.
m2 := (HorizontalNumberLineMorph from: 0 pixelsPerUnit: 5 unitsPerMark: 5 marksPerLegend: 10) update.
m addMorphBack: m2.
container addMorphBack: m.
m := Morph newBounds: (0@0 extent: w@50) color: c.
m2 := (HorizontalNumberLineMorph from: 0 pixelsPerUnit: 10 unitsPerMark: 5 marksPerLegend: 1) update.
m addMorphBack: m2.
container addMorphBack: m.
m := Morph newBounds: (0@0 extent: w@50) color: c.
m2 := (HorizontalNumberLineMorph from: 0 pixelsPerUnit: 2 unitsPerMark: 20 marksPerLegend: 20) update.
m addMorphBack: m2.
container addMorphBack: m.
m := Morph newBounds: (0@0 extent: w@50) color: c.
m2 := (HorizontalNumberLineMorph from: 0 pixelsPerUnit: 1 unitsPerMark: 50 marksPerLegend: 50) update.
m addMorphBack: m2.
container addMorphBack: m.
container openInWorld.
container exportAsPNGNamed: 'HorizontalNumberLines.png'
