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<< Click to Display Table of Contents >> Navigation: ThinBASIC Modules > UI (User Interface) > CONTROLS > Control Types > Canvas Control > Canvas Control Commands > Canvas_Polyline |
Description
Draw a series of connected line segments.
Syntax
n = Canvas_PolyLine points [,rgbColor]
Returns
Number
Parameters
Name |
Type |
Optional |
Meaning |
Points |
UDT |
No |
User-defined type that defines the number of vertices and the location of each. See Remarks for more info. |
rgbColor |
Number |
Yes |
RBG starting color |
Remarks
Points is something like the following UDT:
Type PolyPoint
x As Single
y As Single
End Type
Type PolyArray
count As Long
xy(1024) As PolyPoint '---Can be any number of elements from 2 to 1024
End Type
Points is any UDT that must have the following structure:
•the first member is a LONG integer point count
•followed directly by the appropriate number of SINGLE precision floats to specify the actual coordinates
There must be at least two, and no more than 1024 vertices
Restrictions
See also
Examples
Dim pa As PolyArray
'...
pa.count = 4 '---Indicate you need 4 vertex
pa.xy(1).x = x1 '---X1
pa.xy(1).y = y1-150 '---Y1
pa.xy(2).x = x1+150 '---X2
pa.xy(2).y = y1 '---Y2
pa.xy(3).x = x1 '---X3
pa.xy(3).y = y1+150 '---Y3
pa.xy(4).x = x1-150 '---X4
pa.xy(4).y = y1 '---Y4
CANVAS_Polygon pa, RGB(255, 0, 255), RGB(5,128,0), %CANVAS_FillStyle_DiagonalCrossedLines
'... Number of vertex can be any from 2 to 1024