glib_circle.c File Reference
Silicon Labs Graphics Library: Circle Drawing Routines.
Copyright 2018 Silicon Laboratories Inc. www.silabs.com
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Definition in file
|EMSTATUS||GLIB_drawCircle (GLIB_Context_t *pContext, int32_t xCenter, int32_t yCenter, uint32_t radius)|
|Draws a circle with center at x, y, and a radius. |
|EMSTATUS||GLIB_drawCircleFilled (GLIB_Context_t *pContext, int32_t xCenter, int32_t yCenter, uint32_t radius)|
|Draws a filled circle with center at x, y, and a radius. |
|EMSTATUS||GLIB_drawPartialCircle (GLIB_Context_t *pContext, int32_t xCenter, int32_t yCenter, uint32_t radius, uint8_t bitMask)|
|Draws a partial circle with center at x, y, and a radius. |
|static EMSTATUS||GLIB_drawPartialCirclePoints (GLIB_Context_t *pContext, int32_t xCenter, int32_t yCenter, int32_t x, int32_t y, uint8_t bitMask)|
|Draws circle points using 8-way symmetry. |
Draws circle points using 8-way symmetry.
Example: bitMask = 4 draws only pixels in 3. octant (00000100). bitMask = 5 draws only pixels in 3. and 1. octant (00000101).
Pointer to a GLIB_Context_t in which the circle is drawn. The circle is drawn using the foreground color.
x-coordinate of circle point
y-coordinate of circle point
Bitmask which decides which octants pixels should be drawn The LSB is 1. octant, and the MSB is 8. octant. The octants are ordered from 1 to 8 in counterclockwise order.
- Returns GLIB_OK on succes.
- Returns GLIB_ERROR_NOTHING_TO_DRAW if none of the points were drawn
- Returns error code otherwise
Definition at line
249 of file
References GLIB_drawPixel(), GLIB_ERROR_NOTHING_TO_DRAW, and GLIB_OK.
Referenced by GLIB_drawPartialCircle().