cc [ flag... ] file... –lmlib [ library... ] #include <mlib.h> mlib_status mlib_GraphicsDrawCircle_8(mlib_image *buffer, mlib_s16 x, mlib_s16 y, mlib_s32 r, mlib_s32 c);
mlib_status mlib_GraphicsDrawCircle_32(mlib_image *buffer, mlib_s16 x, mlib_s16 y, mlib_s32 r, mlib_s32 c);
mlib_status mlib_GraphicsDrawCircle_X_8(mlib_image *buffer, mlib_s16 x, mlib_s16 y, mlib_s32 r, mlib_s32 c, mlib_s32 c2);
mlib_status mlib_GraphicsDrawCircle_X_32(mlib_image *buffer, mlib_s16 x, mlib_s16 y, mlib_s32 r, mlib_s32 c, mlib_s32 c2);
mlib_status mlib_GraphicsDrawCircle_A_8(mlib_image *buffer, mlib_s16 x, mlib_s16 y, mlib_s32 r, mlib_s32 c);
mlib_status mlib_GraphicsDrawCircle_A_32(mlib_image *buffer, mlib_s16 x, mlib_s16 y, mlib_s32 r, mlib_s32 c);
mlib_status mlib_GraphicsDrawCircle_B_8(mlib_image *buffer, mlib_s16 x, mlib_s16 y, mlib_s32 r, mlib_s32 c, mlib_s32 a);
mlib_status mlib_GraphicsDrawCircle_B_32(mlib_image *buffer, mlib_s16 x, mlib_s16 y, mlib_s32 r, mlib_s32 c, mlib_s32 a);
mlib_status mlib_GraphicsDrawCircle_AB_8(mlib_image *buffer, mlib_s16 x, mlib_s16 y, mlib_s32 r, mlib_s32 c, mlib_s32 a);
mlib_status mlib_GraphicsDrawCircle_AB_32(mlib_image *buffer, mlib_s16 x, mlib_s16 y, mlib_s32 r, mlib_s32 c, mlib_s32 a);
Each of the mlib_GraphicsDrawCircle_*() functions draws a circle with the center at (x, y) and radius r.
Each of the mlib_GraphicsDrawCircle_X_*() functions draws a circle in Xor mode as follows:
data[x,y] ^= c ^ c2
Each of the mlib_GraphicsDrawCircle_A_*() functions draws a circle with antialiasing.
Each of the mlib_GraphicsDrawCircle_B_*() functions draws a circle with alpha blending as follows:
data[x,y] = (data[x,y] * (255 - a) + c * a) / 255
Each of the mlib_GraphicsDrawCircle_AB_*() functions draws a circle with antialiasing and alpha blending.
Each of the functions takes some of the following arguments:
Pointer to the image into which the function is drawing.
X coordinate of the center.
Y coordinate of the center.
Radius of the arc.
Color used in the drawing.
Alternation color.
Alpha value for blending. 0 ≤ a ≤ 255.
Each of the functions returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.
See attributes(5) for descriptions of the following attributes:
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mlib_GraphicsDrawArc(3MLIB), mlib_GraphicsDrawEllipse(3MLIB), attributes(5)