Add marker style and update drawing step
This commit is contained in:
linarphy
parent
3aaa944986
commit
3b9242e287
2 changed files with 233 additions and 90 deletions
290
lichartee.js
290
lichartee.js
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@ -197,25 +197,42 @@ class Axes
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}
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/**
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* plot y versus x as lines
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* plot y versus x as line
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*
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* @param 1darray<Number> x x data
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* @param 1darray<Number> y y data
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* @param object linestyle Object defining a style for a line. The
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* structure of the object should be:
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* {
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* color: color
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* style: style
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* }
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* where color is a string containing
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* "rgb(x,y,z)", "#abcdef" or a name of
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* a color, and style is "solid", "dotted",
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* "dashdot" or "dashed". Default value is
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* color = "black" and style = "solid"
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* @param String linestyle style of the line (can be "solid",
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* "dotted", "dashdot", "dashed" or ""
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* for no line)
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* @param String linecolor color of the line (can be "#abcdef",
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* "rgb(x,y,z)" or a name of a color.
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* @param String markerstyle style of the marker used for each
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* point (can be "circle", "point",
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* "small", "cross" or "" for no
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* marker)
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* @param String markercolor color of the marker (same
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* definition than linecolor)
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* @param Number markersize size of the marker
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*/
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plot(x, y, linestyle = {color: "black", style: "solid"})
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plot(
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x ,
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y ,
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linestyle = 'solid' ,
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linecolor = 'black' ,
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markerstyle = 'circle',
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markercolor = 'black' ,
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markersize = 5 ,
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)
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{
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let line = new Line(x, y, linestyle);
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let line = new Line(
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x ,
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y ,
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linestyle = linestyle ,
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linecolor = linecolor ,
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markerstyle = markerstyle,
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markercolor = markercolor,
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markersize = markersize ,
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);
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this.lines.push(line);
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}
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@ -223,9 +240,9 @@ class Axes
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* render the axes to the canvas
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*
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* @param ctx CanvasRenderingContext2D Context of the canvas
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* @param window 2darray<Number> Window where to draw the canvas
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* @param view 2darray<Number> Window where to draw the canvas
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*/
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draw(ctx, window)
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draw(ctx, view)
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{
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const x_min = get_ext_array(
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this.lines.map(
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@ -263,20 +280,20 @@ class Axes
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)
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)
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);
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let n_window = this.title.draw(
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let n_view = this.title.draw(
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ctx ,
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window,
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view,
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);
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n_window = this.axis.draw(
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n_view = this.axis.draw(
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ctx ,
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n_window,
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n_view,
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[ [x_min, y_min], [x_max, y_max] ],
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);
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for (const index_line in this.lines)
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{
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this.lines[index_line].draw(
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ctx ,
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n_window,
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n_view,
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[
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[x_min, y_min],
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[x_max, y_max],
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@ -287,9 +304,9 @@ class Axes
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ctx.strokeStyle = 'black';
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ctx.setLineDash([]);
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ctx.strokeRect(
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n_window[0][0], n_window[0][1],
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n_window[1][0] - n_window[0][0],
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n_window[1][1] - n_window[0][1],
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n_view[0][0], n_view[0][1],
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n_view[1][0] - n_view[0][0],
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n_view[1][1] - n_view[0][1],
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);
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}
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@ -317,52 +334,62 @@ class Axes
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*
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* @property 1darray<float> x xdata
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* @property 1darray<float> y ydata
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* @property object linestyle Object defining a style for a line. The
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* structure of the object should be:
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* {
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* color: color
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* style: style
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* }
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* where color is a string containing
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* "rgb(x,y,z)", "#abcdef" or a name of
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* a color, and style is "solid", "dotted",
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* "dashdot" or "dashed". Default value is
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* color = "black" and style = "solid"
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* @property String linestyle style of the line (can be "solid",
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* "dotted", "dashdot", "dashed" or ""
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* for no line)
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* @property String linecolor color of the line (can be "#abcdef",
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* "rgb(x,y,z)" or a name of a color.
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* @property String markerstyle style of the marker used for each
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* point (can be "circle", "point",
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* "small", "cross" or "" for no
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* marker)
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* @property String markercolor color of the marker (same
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* definition than linecolor)
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* @property Number markersize size of the marker
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*/
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class Line
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{
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/**
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* @param 1darray<float> x xdata
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* @param 1darray<float> y ydata
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* @param object linestyle Object defining a style for a line. The
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* structure of the object should be:
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* {
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* color: color
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* style: style
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* }
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* where color is a string containing
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* "rgb(x,y,z)", "#abcdef" or a name of
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* a color, and style is "solid", "dotted",
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* "dashdot" or "dashed". Default value is
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* color = "black" and style = "solid"
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* @param string linestyle style of the line (can be "solid",
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* "dotted", "dashdot", "dashed" or ""
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* for no line)
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* @param string linecolor color of the line (can be "#abcdef",
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* "rgb(x,y,z)" or a name of a color.
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* @param string markerstyle style of the marker used for each
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* point (can be "circle", "point",
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* "small", "cross" or "" for no
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* marker)
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* @param string markercolor color of the marker (same
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* definition than linecolor)
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* @param Number markersize size of the marker
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*/
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constructor(
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x ,
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y ,
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linestyle = {color: "black", style: "solid"},
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linestyle = 'solid' ,
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linecolor = 'black' ,
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markerstyle = 'circle' ,
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markercolor = 'black' ,
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markersize = 5 ,
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)
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{
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this.x = x ;
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this.y = y ;
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this.linestyle = linestyle ;
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this.linecolor = linecolor ;
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this.markerstyle = markerstyle;
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this.markercolor = markercolor;
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this.markersize = markersize ;
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}
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/**
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* draw the line in the box coordinate
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*
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* @param CanvasRenderingContext2d ctx Context of the canvas
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* @param 2dlist<int> box Box where to draw the line
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* @param 2dlist<float> view Scale of the box (link value <->
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* @param CanvasRenderingContext2d ctx context of the canvas
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* @param 2dlist<int> box box where to draw the line
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* @param 2dlist<float> view scale of the box (link value <->
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* coordinate
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*/
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draw(ctx, box, view)
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@ -390,19 +417,52 @@ class Line
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);
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}
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);
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if (this.linestyle.style === 'solid')
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if (this.linestyle != '')
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{
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this.drawLine(
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ctx,
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x_coordinates,
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y_coordinates,
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);
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}
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if (this.markerstyle != '')
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{
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this.drawPoints(
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ctx ,
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x_coordinates,
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y_coordinates,
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);
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}
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}
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/**
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* draw a line in the given context at the given positions
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*
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* @param CanvasRenderingContext2d ctx context of the canvas
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* @param 1darray<Number> x_coordinates X coordinates of the point
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* @param 1darray<Number> y_coordinates Y coordinates of the point
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*/
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drawLine(ctx, x_coordinates, y_coordinates)
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{
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ctx.beginPath();
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ctx.strokeStyle = this.linecolor;
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ctx.moveTo(
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x_coordinates[0],
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y_coordinates[0],
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);
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if (this.linestyle === 'solid')
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{
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ctx.setLineDash([]);
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}
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else if (this.linestyle.style === 'dashed')
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else if (this.linestyle === 'dashed')
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{
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ctx.setLineDash([15, 5]);
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}
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else if (this.linestyle.style === 'dotted')
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else if (this.linestyle === 'dotted')
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{
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ctx.setLineDash([2,2]);
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}
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else if (this.linestyle.style === 'dashdot')
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else if (this.linestyle === 'dashdot')
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{
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ctx.setLineDash([15,2,2,2]);
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}
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@ -410,21 +470,102 @@ class Line
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{
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throw _('the style of the line is not correctly defined');
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}
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ctx.strokeStyle = this.linestyle.color;
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ctx.beginPath();
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ctx.moveTo(
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x_coordinates[0],
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y_coordinates[0]
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);
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for (const index in x_coordinates)
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{
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ctx.lineTo(
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x_coordinates[index],
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y_coordinates[index]
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y_coordinates[index],
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);
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}
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ctx.stroke();
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}
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/**
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* draw points in the given context at the given positions
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*
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* @param CanvasRenderingContext2d ctx context of the canvas
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* @param 1darray<Number> x_coordinates x coordinate of the point
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* @param 1darray<Number> y_coordinates y coordinate of the point
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*/
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drawPoints(ctx, x_coordinates, y_coordinates)
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{
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for (const index in x_coordinates)
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{
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let x = x_coordinates[index];
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let y = y_coordinates[index];
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ctx.beginPath();
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if (this.markerstyle == 'circle')
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{
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ctx.fillStyle = this.markercolor;
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ctx.ellipse(
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x ,
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y ,
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this.markersize,
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this.markersize,
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0 ,
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0 ,
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2*Math.PI ,
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);
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ctx.fill();
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}
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else if (this.markerstyle == 'point')
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{
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ctx.fillStyle = this.markercolor;
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ctx.ellipse(
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x ,
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y ,
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0.5*this.markersize,
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0.5*this.markersize,
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0 ,
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0 ,
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2*Math.PI ,
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);
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ctx.fill();
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}
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else if (this.markerstyle == 'small')
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{
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ctx.fillStyle = this.markercolor;
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ctx.ellipse(
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x ,
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y ,
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0.1*this.markersize,
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0.1*this.markersize,
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0 ,
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0 ,
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2*Math.PI ,
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);
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ctx.fill();
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}
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else if (this.markerstyle == 'cross')
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{
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ctx.setLineDash([]);
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ctx.strokeStyle = this.markercolor;
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ctx.moveTo(
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x - this.markersize,
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y - this.markersize,
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);
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ctx.lineTo(
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x + this.markersize,
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y + this.markersize,
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);
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ctx.stroke();
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ctx.beginPath();
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ctx.moveTo(
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x + this.markersize,
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y - this.markersize,
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);
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ctx.lineTo(
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x - this.markersize,
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y + this.markersize,
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);
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ctx.stroke();
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}
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else
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{
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throw _('the style of the marker is not correctly defined');
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}
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}
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}
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}
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/**
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@ -494,27 +635,29 @@ class Title
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* draw the title in the given windows
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*
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* @param ctx CanvasRenderingContext2D Context of the canvas
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* @param window int<array> Window where to write the title on
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* @param box int<array> Window where to write the title on
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*
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* @return plot_windows int<array> New windows for the plot
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* @return plot_box int<array> New windows for the plot
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*/
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draw(ctx, window)
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draw(ctx, box)
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{
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ctx.font = this.font.toString();
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ctx.fillStyle = 'black';
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ctx.strokeStyle = 'black';
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let width = ctx.measureText(this.content).width;
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if (width > window[1][0] - window[0][0] + 2 * this.margin)
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if (width > box[1][0] - box[0][0] + 2 * this.margin)
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{
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ctx.fillText(
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this.content ,
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window[0][0] ,
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box[0][0] ,
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this.font.size + this.margin,
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window[1][0] - window[0][0],
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box[1][0] - box[0][0],
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);
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}
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else
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{
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let text_position = window[0][0] + (
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window[1][0] - window[0][0] - width
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let text_position = box[0][0] + (
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box[1][0] - box[0][0] - width
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) / 2
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ctx.fillText(
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this.content,
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@ -524,10 +667,10 @@ class Title
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}
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return [
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[
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window[0][0],
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window[0][1] + this.font.size + 2 * this.margin,
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box[0][0],
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box[0][1] + this.font.size + 2 * this.margin,
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],
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[window[1][0], window[1][1]],
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[box[1][0], box[1][1]],
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];
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}
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}
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@ -574,6 +717,8 @@ class Axis
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*/
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draw(ctx, window, view)
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{
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ctx.strokeStyle = 'black';
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ctx.fillStyle = 'black';
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let index = 0;
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let start_pos = window[0][1];
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let padding = (
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@ -588,7 +733,6 @@ class Axis
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view[1][1] - index * step
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).toString().slice(0,3);
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let text_position = current_y + this.text_height / 2
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ctx.strokeStyle = 'black';
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ctx.beginPath();
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ctx.moveTo(
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window[0][0] + this.margin + width,
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|
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15
test.js
15
test.js
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@ -5,10 +5,9 @@ manager.add_canvas(1000, 500);
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manager.add_canvas(1000, 500).figure.add_axes().plot(
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[0,1,2,3,4,5] ,
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[0,1,4,9,16,25] ,
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{
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color: 'rgb(255,0,0)',
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style: 'dashed'
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}
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linestyle = 'dashed' ,
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linecolor = 'rgb(255,0,0)',
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markerstyle = 'cross' ,
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);
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manager.list_canvas[0].figure.list_axes[0].title = 'squared and x2';
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manager.list_canvas[0].figure.list_axes[0].plot(
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@ -18,10 +17,10 @@ manager.list_canvas[0].figure.list_axes[0].plot(
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manager.list_canvas[0].figure.add_axes().plot(
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[2,4,6,8,10] ,
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[1/2,1/4,1/6,1/8,1/10] ,
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{
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color: 'rgb(0,255,0)',
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style: 'dashdot'
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}
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linestyle = 'dashdot' ,
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linecolor = 'rgb(0,255,0)',
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markerstyle = 'circle' ,
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markercolor = 'rgb(0,0,255)',
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);
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manager.list_canvas[0].figure.list_axes[0].title = '1/x';
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manager.draw();
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