Get Contour from list

Documentation

• Class name: Get Contour from list
• Category: Bmad/CV/Contour
• Output node: False

This node is designed to retrieve a specific contour from a list of contours based on a given index. It abstracts the process of accessing contours within a collection, facilitating the extraction of individual contour data for further processing or analysis.

Input types

Required

• contours
  • Represents the list of contours from which a specific contour is to be retrieved. It is crucial for selecting the desired contour for further operations.
  • Comfy dtype: CV_CONTOURS
  • Python dtype: List[Tuple[int, int]]
• index
  • Specifies the position of the contour to be retrieved from the list. It determines which contour is selected for output, allowing for targeted extraction based on order.
  • Comfy dtype: INT
  • Python dtype: int

Output types

• cv_contour
  • Comfy dtype: CV_CONTOUR
  • The output is a single contour selected from the input list based on the specified index. It enables focused analysis or manipulation of a specific contour.
  • Python dtype: Tuple[int, int]

Usage tips

• Infra type: CPU
• Common nodes: unknown

Source code

class GetContourFromList:
    @classmethod
    def INPUT_TYPES(s):
        return {
            "required": {
                "contours": ("CV_CONTOURS",),
                "index": ("INT", {"default": 0, "min": 0, "step": 1})
            }
        }

    RETURN_TYPES = ("CV_CONTOUR",)
    FUNCTION = "get_contour"
    CATEGORY = "Bmad/CV/Contour"

    def get_contour(self, contours, index):
        if index >= len(contours):
            return (None,)
        return (contours[index],)