lv_area_diff() function

Get resulting sub areas after removing the common parts of two areas from the first area

Syntax

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Summary

Declaration

Definition

int8_t lv_area_diff(lv_area_t res_p[], const lv_area_t * a1_p, const lv_area_t * a2_p);

Implemented in lv_area.c:111

Argument

Description

res_p

pointer to an array of areas with a count of 4, the resulting areas will be stored here

a1_p

pointer to the first area

a2_p

pointer to the second area

number of results (max 4) or -1 if no intersect

from examples