Draw API

Functions

Arc

arc(x, y, w, h, start, extent, type, border_color, fill_color)

Draws an arc.

Parameters

• x: the x coordinate of the upper-left corner of the arc's framing rectangle
• y: the y coordinate of the upper-left corner of the arc's framing rectangle
• w: the overall width of the full ellipse of which this arc is a partial section
• h: the overall height of the full ellipse of which this arc is a partial section
• start: the starting angle of the arc in degrees
• extent: the angular extent of the arc in degrees
• type: the closure type for the arc: "open", "chord" or "pie"
• border_color: fill color can be set using an RGB comma separated numeric notation, with primary color numbers from 0 to 255 (for example, “color:255,0,0” is red), or using color names. The valid names are: black, blue, cyan, darkgray, gray, lightgray, green, magenta, orange, pink, red, white, yellow.
• fill_color: fill color can be set using an RGB comma separated numeric notation, with primary color numbers from 0 to 255 (for example, “color:255,0,0” is red), or using color names. The valid names are: black, blue, cyan, darkgray, gray, lightgray, green, magenta, orange, pink, red, white, yellow.

Fill

fill(color)

Fills the whole area with given color

Parameters

• color: color can be set using an RGB comma separated numeric notation, with primary color numbers from 0 to 255 (for example, “color:255,0,0” is red) or using color names. The valid names are: black, blue, cyan, darkgray, gray, lightgray, green, magenta, orange, pink, red, white, yellow. Set color to "transparent" to create a transparent background, before drawing other objects.

Image

image(file, x, y)

Parameters

• file: the full pathname, relative to the HSYCO home directory
• x: the x coordinate of the location where the String should be rendered - y: the y coordinate of the location where the String should be rendered

Line

line(x1, y1, x2, y2, ...., color)

Draws a sequence of connected lines - x1: X axis coordinate of first point

Parameters

• y1: Y axis coordinate of first point
• x2: X axis coordinate of second point
• y2: Y axis coordinate of second point
• xN: X axis coordinate of N-th point
• yN: Y axis coordinate of N-th point
• color: color can be set using an RGB comma separated numeric notation, with primary color numbers from 0 to 255 (for example, “color:255,0,0” is red), or using color names. The valid names are: black, blue, cyan, darkgray, gray, lightgray, green, magenta, orange, pink, red, white, yellow.

Spline

spline(x1, y1, x2, y2, ...., color)

draws a natural cubic spline interpolation of a sequence of points - x1: X axis coordinate of first point

Parameters

• y1: Y axis coordinate of first point
• x2: X axis coordinate of second point
• y2: Y axis coordinate of second point
• xN: X axis coordinate of N-th point
• yN: Y axis coordinate of N-th point
• color: color can be set using an RGB comma separated numeric notation, with primary color numbers from 0 to 255 (for example, “color:255,0,0” is red), or using color names. The valid names are: black, blue, cyan, darkgray, gray, lightgray, green, magenta, orange, pink, red, white, yellow.

Rectangle

rectangle(x, y, w, h, border_color, fill_color)

Parameters

• x: the x coordinate of the upper-left corner of the rectangle
• y: the y coordinate of the upper-left corner of the rectangle
• w: the width of the rectangle
• h: the height of the rectangle
• border_color: fill color can be set using an RGB comma separated numeric notation, with

primary color numbers from 0 to 255 (for example, “color:255,0,0” is red), or using color names. The valid names are: black, blue, cyan, darkgray, gray, lightgray, green, magenta, orange, pink, red, white, yellow.

• fill_color: fill color can be set using an RGB comma separated numeric notation, with primary color numbers from 0 to 255 (for example, “color:255,0,0” is red),

or using color names. The valid names are: black, blue, cyan, darkgray, gray, lightgray, green, magenta, orange, pink, red, white, yellow.

String

string(text, x, y, font, style, size, color)

Parameters

• text: quoted text
• x: the x coordinate of the location where the String should be rendered - y: the y coordinate of the location where the String should be rendered - font: font name, like “arial”, “helvetica”, “courier” etc.
• style: “bold”, “italic”, or “bolditalic”
• color: color can be set using an RGB comma separated numeric notation, with primary color numbers from 0 to 255 (for example, “color:255,0,0” is red),

or using color names. The valid names are: black, blue, cyan, darkgray, gray, lightgray, green, magenta, orange, pink, red, white, yellow.

Stroke

stroke(w)

Set the stroke width for all subsequent drawing commands.

Parameters

• w: the width of the stroke