Drawer Class Reference

Draw to an image. More...

#include <fvutils/draw/drawer.h>

List of all members.


Public Member Functions

 Drawer ()
 Constructor.
 ~Drawer ()
 Destructor.
void draw_circle (int center_x, int center_y, unsigned int radius)
 Draw circle.
void draw_rectangle (unsigned int x, unsigned int y, unsigned int w, unsigned int h)
 Draw rectangle.
void draw_rectangle_inverted (unsigned int x, unsigned int y, unsigned int w, unsigned int h)
 Draw inverted rectangle.
void draw_point (unsigned int x, unsigned int y)
 Draw point.
void color_point (unsigned int x, unsigned int y)
 Color the given point.
void color_point (unsigned int x, unsigned int y, YUV_t color)
 Color the given point.
void draw_line (unsigned int x_start, unsigned int y_start, unsigned int x_end, unsigned int y_end)
 Draw line.
void draw_cross (unsigned int x_center, unsigned int y_center, unsigned int width)
 Draws a cross.
void set_buffer (unsigned char *buffer, unsigned int width, unsigned int height)
 Set the buffer to draw to.
void set_color (unsigned char y, unsigned char u, unsigned char v)
 Set drawing color.
void set_color (YUV_t color)
 Set drawing color.

Detailed Description

Draw to an image.

Definition at line 29 of file drawer.h.

Constructor & Destructor Documentation

Drawer::Drawer (  ) 

Constructor.

Default paint color is white.

Definition at line 38 of file drawer.cpp.

References YUV_t_struct::white().

Drawer::~Drawer (  ) 

Destructor.

Definition at line 45 of file drawer.cpp.

Member Function Documentation

void Drawer::color_point ( unsigned int  x,
unsigned int  y,
YUV_t  color 
)

Color the given point.

This will color a single point (to save excessive function calls the color is also a parameter)

Parameters:
x x coordinate of point
y y coordinate of point
color Color to set

Definition at line 352 of file drawer.cpp.

References YUV_t_struct::U, YUV_t_struct::V, and YUV_t_struct::Y.

void Drawer::color_point ( unsigned int  x,
unsigned int  y 
)

Color the given point.

This will leave the Y-component of the given pixel unchanged and will just set the U and V components. This can be used to keep a little bit of original image information but marking special regions.

Parameters:
x x coordinate of point
y y coordinate of point

Definition at line 330 of file drawer.cpp.

References YUV_t_struct::U, YUV_t_struct::V, and YUV_t_struct::Y.

Referenced by ColorTrainWidget::draw_segmentation_result().

void Drawer::draw_circle ( int  center_x,
int  center_y,
unsigned int  radius 
)

Draw circle.

Draws a circle at the given center point and with the given radius.

Parameters:
center_x x coordinate of circle center
center_y y coordinate of circle center
radius radius of circle

Definition at line 96 of file drawer.cpp.

References YUV_t_struct::U, YUV_t_struct::V, and YUV_t_struct::Y.

Referenced by FieldDrawer::draw_field(), and FieldDrawer::draw_lines().

void Drawer::draw_cross ( unsigned int  x_center,
unsigned int  y_center,
unsigned int  width 
)

Draws a cross.

Parameters:
x_center Center of the cross
y_center Center of the cross
width of the bars

Definition at line 461 of file drawer.cpp.

References draw_line().

Referenced by FieldDrawer::draw_line_points().

void Drawer::draw_line ( unsigned int  x_start,
unsigned int  y_start,
unsigned int  x_end,
unsigned int  y_end 
)

Draw line.

Standard Bresenham in all directions. For in-depth information have a look at http://de.wikipedia.org/wiki/Bresenham-Algorithmus

Parameters:
x_start x coordinate of start point
y_start y coordinate of start point
x_end x coordinate of end point
y_end y coordinate of end point

Definition at line 375 of file drawer.cpp.

References YUV_t_struct::U, YUV_t_struct::V, and YUV_t_struct::Y.

Referenced by draw_cross(), FieldDrawer::draw_field(), FieldDrawer::draw_lines(), and SEGenerator::linear().

void Drawer::draw_point ( unsigned int  x,
unsigned int  y 
)

Draw point.

Parameters:
x x coordinate of point
y y coordinate of point

Definition at line 308 of file drawer.cpp.

References YUV_t_struct::U, YUV_t_struct::V, and YUV_t_struct::Y.

void Drawer::draw_rectangle ( unsigned int  x,
unsigned int  y,
unsigned int  w,
unsigned int  h 
)

Draw rectangle.

Parameters:
x x coordinate of rectangle's upper left corner
y y coordinate of rectangle's upper left corner
w width of rectangle from x to the right
h height of rectangle from y to the bottom

Definition at line 206 of file drawer.cpp.

References YUV_t_struct::U, YUV_t_struct::V, and YUV_t_struct::Y.

void Drawer::draw_rectangle_inverted ( unsigned int  x,
unsigned int  y,
unsigned int  w,
unsigned int  h 
)

Draw inverted rectangle.

This draws a rectangle but instead of using the draw color it is drawn in the inverted color of the pixel where it is drawn.

Parameters:
x x coordinate of rectangle's upper left corner
y y coordinate of rectangle's upper left corner
w width of rectangle from x to the right
h height of rectangle from y to the bottom

Definition at line 262 of file drawer.cpp.

Referenced by ColorTrainWidget::click().

void Drawer::set_buffer ( unsigned char *  buffer,
unsigned int  width,
unsigned int  height 
)

Set the buffer to draw to.

Parameters:
buffer buffer to draw to, must be YUV422 planar formatted
width width of the buffer
height height of the buffer

Definition at line 56 of file drawer.cpp.

Referenced by ColorTrainWidget::click(), FieldDrawer::draw_field(), FieldDrawer::draw_line_points(), FieldDrawer::draw_lines(), ColorTrainWidget::draw_segmentation_result(), and SEGenerator::linear().

void Drawer::set_color ( YUV_t  color  ) 

Set drawing color.

Parameters:
color the YUV drawing color

Definition at line 83 of file drawer.cpp.

void Drawer::set_color ( unsigned char  y,
unsigned char  u,
unsigned char  v 
)

Set drawing color.

Parameters:
y Y component of YUV drawing color
u U component of YUV drawing color
v V component of YUV drawing color

Definition at line 71 of file drawer.cpp.

References YUV_t_struct::U, YUV_t_struct::V, and YUV_t_struct::Y.

Referenced by FieldDrawer::draw_field(), FieldDrawer::draw_line_points(), FieldDrawer::draw_lines(), ColorTrainWidget::draw_segmentation_result(), and SEGenerator::linear().

The documentation for this class was generated from the following files: