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Function:

Draw a straight line free image:

Beginshape (), vertex (), and endshape () are the nodes that connect to the graph, and endshape (close) indicates the closed graph.

Draw a curve border free image:

Beginshape () start to draw

Vertex () graph start endpoint

Beziervertex (cx1, cy1, CX2, cy2, x, y) curves cx1, cy1, CX2, cy2 are the first and second control point coordinates X, Y is the end point coordinates

Endshape ()

 

Color: the key is that there are several values behind the brackets.

Grayscale: color (grayscale)

Gray Level transparency: color (gray level, transparency)

Color: color (R, G, B)

Color transparency: color (R, G, B, transparency)

Colormode (): defines the color mode.

Colormode (RGB, 255) adopts the RGB mode

Colormode (HSB, 360,100,100) uses the HSB mode followed by a number in the value range

 

Painting attributes:

Background (color) sets the canvas color

Fill (color) specifies the fill color

Nofill () is not color filled

Stroke (color) specifies the line color

Nostroke () does not draw lines

Strokeweight (thickness) specifies the Border Width

Strokecap (mode) specifies the line endpoint form including square (square endpoint) project (square extension endpoint) round (Circular endpoint)

Strokejoin (mode) specifies the line angle in the form of miter (sharp angle) bevel (diagonal angle) round (rounded corner)

Smooth () enables smooth drawing mode

Nosmooth () Disable smooth drawing mode

 

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