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Draw a circle/disc on the draw window
Description
Use current foreground color, draw mode to draw a circle or filled circle(disc) on the draw window
Usage:
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Direct: |
"CCxyrf" //Draw a circle: center point:(x,y), ratio=r, if f==1, fill the circle |
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Arduino: |
void drawCircle(unsigned int x, unsigned int y, unsigned int r, unsigned char f) void drawDisc(unsigned int x, unsigned int y, unsigned int r) |
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C: |
void Digole_drawCircle(unsigned int x, unsigned int y, unsigned int r, unsigned char f) void Digole_drawDisc(unsigned int x, unsigned int y, unsigned int r) |
Parameters:
(x, y)
The pixel position of the center point of circle (disc).
r
The pixels ratio of circle/disc
f
The flag of fill, f=1, fill the circle.
NOTE: if the value of x,y or y greater than "254", then use 2 bytes format: the first byte is fix of 255, then the second byte is the value minus 255. eg.300=255+45, so, "\xFF\x2D" is the result.
This schedule is in order to compatible small displays, which the width and height is less than 255 pixels
Warning:The 4.3" IPS modules are always use 2 bytes regular integrate format.
Return:
none
Example (Arduino):
mydisp.drawCircle(150,120,100,1); //draw a filled circle, the center point @(150,120), ratio=100px
Example(direct)
serial.writeString("CC\x96\x78\x64\x01"); //draw a filled circle, the center point @(150,120), ratio=100px
//for 4.3" IPS modules, use uint16_t type
serial.writeString("DP\00\x96\x00\x78\x00\x64\x01"); //draw a filled circle, the center point @(150,120), ratio=100px
Changelog
| Version | Description |
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