Pixy Frame Helper

Collaboration diagram for Pixy Frame Helper:

Functions
int	pixy_render_full_frame (uint16_t x, uint16_t y)
int	pixy_render_cropped_frame (uint16_t x, uint16_t y, uint16_t xoffset, uint16_t yoffset, uint16_t width, uint16_t height)
int	pixy_save_full_frame (FILE_HANDLE *handle)
int	pixy_save_cropped_frame (FILE_HANDLE *handle, uint16_t xoffset, uint16_t yoffset, uint16_t width, uint16_t height)
int	pixy_cc_set_region (uint8_t signum, uint16_t xoffset, uint16_t yoffset, uint16_t width, uint16_t height)

Detailed Description

A collection of helper functions that allow receiving and rendering a frame from pixy onto the display. Furthermore you can select a color in a frame, to use for tracking.

Function Documentation

int pixy_cc_set_region	(	uint8_t	signum,
		uint16_t	xoffset,
		uint16_t	yoffset,
		uint16_t	width,
		uint16_t	height
	)

Sets the color signature to the color in the selected region of the frame

Parameters

signum	the color signature number (1..7)
xoffset	The x-Coordinate of the topleft point of the region
yoffset	The y-Coordinate of the topleft point of the region
width	The width of the region
height	The height of the region

Returns

0 on success, otherwise the errorcode from pixy

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int pixy_render_cropped_frame	(	uint16_t	x,
		uint16_t	y,
		uint16_t	xoffset,
		uint16_t	yoffset,
		uint16_t	width,
		uint16_t	height
	)

Receives a cropped frame from pixy and display's it on the display with the topleft corner at (x,y)

Parameters

x	The x-Coordinate of the top left corner to draw the image
y	The y-Coordinate of the top left corner to draw the image
xoffset	The x-Coordinate on the pixy image from where on you want the frame data
yoffset	The y-Coordinate on the pixy image from where on you want the frame data
width	The width of the image recorded from pixy
height	The height of the image recorded from pixy

Returns

0 on success, otherwise the errorcode from pixy

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int pixy_render_full_frame	(	uint16_t	x,
		uint16_t	y
	)

Receives a fullsized frame from pixy and display's it on the display with the topleft corner at (x,y)

Parameters

x	The x-Coordinate of the top left corner
y	The y-Coordinate of the top left corner

Returns

0 on success, otherwise the errorcode from pixy

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int pixy_save_cropped_frame	(	FILE_HANDLE *	handle,
		uint16_t	xoffset,
		uint16_t	yoffset,
		uint16_t	width,
		uint16_t	height
	)

Receives a cropped frame from pixy and saves it to the given file in the 24bit (b,g,a) format.

Parameters

handle	The file to write the data to. The file must be open and it should be seeked to the right position.
xoffset	The x-Coordinate on the pixy image from where on you want the frame data
yoffset	The y-Coordinate on the pixy image from where on you want the frame data
width	The width of the image recorded from pixy
height	The height of the image recorded from pixy

Returns

0 on success, otherwise the errorcode from pixy

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int pixy_save_full_frame

(

FILE_HANDLE *

handle

)

Receives a fullsized frame from pixy and saves it to the given file in the 24bit (b,g,a) format. Use this method to write the bitmap-data part of a windows bitmap (.bmp). This method will neither open nor close the passed file.

Parameters

handle

The file to write the data to. The file must be open and it should be seeked to the right position.

Returns

0 on success, otherwise the errorcode from pixy

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