ComfyUI Node: get region by center and size (from text)

get region by center and size (from text):

The region-util-get-crop-location-from-center-size-text node is designed to calculate the coordinates of a rectangular region based on a given center point and size, provided as a text string. This node is particularly useful for AI artists who need to define specific regions within an image for cropping or other manipulations. By inputting a string that specifies the center coordinates and dimensions of the desired region, the node computes the top-left and bottom-right coordinates, as well as the center coordinates and dimensions of the region. This functionality simplifies the process of region selection, making it more intuitive and less error-prone, especially when dealing with complex image processing tasks.

get region by center and size (from text) Input Parameters:

text

The text parameter is a string that specifies the center coordinates and dimensions of the region to be cropped. The format of the string should be cx,cy,w,h, where cx and cy are the x and y coordinates of the center, and w and h are the width and height of the region, respectively. The default value is '128,128,256,256', which means the center of the region is at (128, 128) and the size of the region is 256x256 pixels. This parameter allows you to easily define the region without needing to input multiple separate values.

get region by center and size (from text) Output Parameters:

left

The left output parameter represents the x-coordinate of the left edge of the calculated region. This value is derived from the center coordinates and width provided in the input text.

top

The top output parameter represents the y-coordinate of the top edge of the calculated region. This value is derived from the center coordinates and height provided in the input text.

right

The right output parameter represents the x-coordinate of the right edge of the calculated region. This value is derived from the center coordinates and width provided in the input text.

bottom

The bottom output parameter represents the y-coordinate of the bottom edge of the calculated region. This value is derived from the center coordinates and height provided in the input text.

cx

The cx output parameter represents the x-coordinate of the center of the calculated region. This value is directly taken from the input text.

cy

The cy output parameter represents the y-coordinate of the center of the calculated region. This value is directly taken from the input text.

w

The w output parameter represents the width of the calculated region. This value is directly taken from the input text.

h

The h output parameter represents the height of the calculated region. This value is directly taken from the input text.

get region by center and size (from text) Usage Tips:

• Ensure that the input text string is in the correct format cx,cy,w,h to avoid errors in the calculation of the region coordinates.
• Use this node to quickly define regions for cropping or other image manipulations, especially when working with images that require precise region selection.
• Combine this node with other region-util nodes to perform more complex image processing tasks, such as padding or transforming regions.

get region by center and size (from text) Common Errors and Solutions:

Invalid input format

• Explanation: The input text string is not in the correct format cx,cy,w,h.
• Solution: Ensure that the input text string follows the format cx,cy,w,h, where cx and cy are the center coordinates, and w and h are the width and height of the region.

Non-numeric values in input

• Explanation: The input text string contains non-numeric values.
• Solution: Ensure that all values in the input text string are numeric and separated by commas.

Out-of-range values

• Explanation: The input values for center coordinates or dimensions are out of the acceptable range.
• Solution: Ensure that the center coordinates and dimensions are within the acceptable range for your specific use case. For example, coordinates should be within the image boundaries, and dimensions should be positive values.