draw

draw

Synopsis

void                ucil_convert_color                  (ucil_color_t *dest,
                                                         ucil_color_t *src);
void                ucil_draw_box                       (unicap_data_buffer_t *data_buffer,
                                                         ucil_color_t *color,
                                                         int x1,
                                                         int y1,
                                                         int x2,
                                                         int y2);
void                ucil_draw_line                      (unicap_data_buffer_t *data_buffer,
                                                         ucil_color_t *color,
                                                         int x1,
                                                         int y1,
                                                         int x2,
                                                         int y2);
void                ucil_draw_rect                      (unicap_data_buffer_t *data_buffer,
                                                         ucil_color_t *color,
                                                         int x1,
                                                         int y1,
                                                         int x2,
                                                         int y2);
void                ucil_fill                           (unicap_data_buffer_t *data_buffer,
                                                         ucil_color_t *color);
void                ucil_set_pixel                      (unicap_data_buffer_t *data_buffer,
                                                         ucil_color_t *color,
                                                         int x,
                                                         int y);

Description

Details

ucil_convert_color ()

void                ucil_convert_color                  (ucil_color_t *dest,
                                                         ucil_color_t *src);

Convert colors between colorspaces. The colorspace field of dest needs to be set to the target colorspace, like in this example:

1
2
3
4
5
6
src.colorspace = UCIL_COLORSPACE_RGB24;
src.rgb24.r = 0xff;
src.rgb24.g = 0xff;
src.rgb24.b = 0xff;
dest.colorspace = UCIL_COLORSPACE_YUV;
ucil_convert_color( &dest, &src );

dest :

target color

src :

source color

ucil_draw_box ()

void                ucil_draw_box                       (unicap_data_buffer_t *data_buffer,
                                                         ucil_color_t *color,
                                                         int x1,
                                                         int y1,
                                                         int x2,
                                                         int y2);

Draws a box

data_buffer :

target buffer

color :

an ucil_color_t. The colorspace of the color has to match the colorspace of the data_buffer.

x1 :

starting point of the box ( x position )

y1 :

starting point of the box ( y position )

x2 :

endpoint of the box ( x position )

y2 :

endpoint of the box ( y position )

ucil_draw_line ()

void                ucil_draw_line                      (unicap_data_buffer_t *data_buffer,
                                                         ucil_color_t *color,
                                                         int x1,
                                                         int y1,
                                                         int x2,
                                                         int y2);

Draws a line on the data buffer. The endpoints are clipped to the buffer dimensions

data_buffer :

target buffer

color :

an ucil_color_t. The colorspace of the color has to match the colorspace of the data_buffer.

x1 :

starting point of the line ( x position )

y1 :

starting point of the line ( y position )

x2 :

endpoint of the line ( x position )

y2 :

endpoint of the line ( y position )

ucil_draw_rect ()

void                ucil_draw_rect                      (unicap_data_buffer_t *data_buffer,
                                                         ucil_color_t *color,
                                                         int x1,
                                                         int y1,
                                                         int x2,
                                                         int y2);

Draws a rectangle filled with color.

data_buffer :

target buffer

color :

an ucil_color_t. The colorspace of the color has to match the colorspace of the data_buffer.

x1 :

starting point of the rectangle ( x position )

y1 :

starting point of the rectangle ( y position )

x2 :

endpoint of the rectangle ( x position )

y2 :

endpoint of the rectangle ( y position )

ucil_fill ()

void                ucil_fill                           (unicap_data_buffer_t *data_buffer,
                                                         ucil_color_t *color);

Fill the buffer with a color.

data_buffer :

target buffer

color :

an ucil_color_t. The colorspace of the color has to match the colorspace of the data_buffer.

ucil_set_pixel ()

void                ucil_set_pixel                      (unicap_data_buffer_t *data_buffer,
                                                         ucil_color_t *color,
                                                         int x,
                                                         int y);

Draws a pixel on the data buffer.

data_buffer :

target buffer

color :

an ucil_color_t. The colorspace of the color has to match the colorspace of the data_buffer.

x :

x position

y :

y position