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cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h> mlib_status mlib_GraphicsDrawEllipse_8(mlib_image *buffer, mlib_s16 x, mlib_s16 y, mlib_s32 a, mlib_s32 b, mlib_f32 t, mlib_s32 c);
mlib_status mlib_GraphicsDrawEllipse_32(mlib_image *buffer, mlib_s16 x, mlib_s16 y, mlib_s32 a, mlib_s32 b, mlib_f32 t, mlib_s32 c);
mlib_status mlib_GraphicsDrawEllipse_X_8(mlib_image *buffer, mlib_s16 x, mlib_s16 y, mlib_s32 a, mlib_s32 b, mlib_f32 t, mlib_s32 c, mlib_s32 c2);
mlib_status mlib_GraphicsDrawEllipse_X_32(mlib_image *buffer, mlib_s16 x, mlib_s16 y, mlib_s32 a, mlib_s32 b, mlib_f32 t, mlib_s32 c, mlib_s32 c2);
mlib_status mlib_GraphicsDrawEllipse_A_8(mlib_image *buffer, mlib_s16 x, mlib_s16 y, mlib_s32 a, mlib_s32 b, mlib_f32 t, mlib_s32 c);
mlib_status mlib_GraphicsDrawEllipse_A_32(mlib_image *buffer, mlib_s16 x, mlib_s16 y, mlib_s32 a, mlib_s32 b, mlib_f32 t, mlib_s32 c);
mlib_status mlib_GraphicsDrawEllipse_B_8(mlib_image *buffer, mlib_s16 x, mlib_s16 y, mlib_s32 a, mlib_s32 b, mlib_f32 t, mlib_s32 c, mlib_s32 alpha);
mlib_status mlib_GraphicsDrawEllipse_B_32(mlib_image *buffer, mlib_s16 x, mlib_s16 y, mlib_s32 a, mlib_s32 b, mlib_f32 t, mlib_s32 c, mlib_s32 alpha);
mlib_status mlib_GraphicsDrawEllipse_AB_8(mlib_image *buffer, mlib_s16 x, mlib_s16 y, mlib_s32 a, mlib_s32 b, mlib_f32 t, mlib_s32 c, mlib_s32 alpha);
mlib_status mlib_GraphicsDrawEllipse_AB_32(mlib_image *buffer, mlib_s16 x, mlib_s16 y, mlib_s32 a, mlib_s32 b, mlib_f32 t, mlib_s32 c, mlib_s32 alpha);
Each of the mlib_GraphicsDrawEllipse_*() functions draws an ellipse with the center at (x, y), major semiaxis a, and minor semiaxis b. The angle of the major semiaxis is t counterclockwise from the X axis.
Each of the mlib_GraphicsDrawEllipse_X_*() functions draws an ellipse in Xor mode as follows:
data[x,y] ^= c ^ c2
Each of the mlib_GraphicsDrawEllipse_A_*() functions draws an ellipse with antialiasing.
Each of the mlib_GraphicsDrawEllipse_B_*() functions draws an ellipse with alpha blending as follows:
data[x,y] = (data[x,y] * (255 - alpha) + c * alpha) / 255
Each of the mlib_GraphicsDrawEllipse_A_*() functions draws an ellipse with antialiasing and alpha blending.
Each of the functions takes some of the following arguments:
buffer
x
y
a
b
t
c
c2
alpha
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_GraphicsDrawCircle(3MLIB), attributes(5)