lv_image_buf_get_transformed_area() function

Get the area of a rectangle if its rotated and scaled

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Summary

Declaration

Definition

from lv_draw_image_private.h:74

void lv_image_buf_get_transformed_area(lv_area_t * res, int32_t w, int32_t h, int32_t angle, uint16_t scale_x, uint16_t scale_y, const lv_point_t * pivot);

Implemented in lv_draw_image.c:242

Arguments

Argument

Description

res

store the coordinates here

width of the rectangle to transform

height of the rectangle to transform

angle

angle of rotation

scale_x

zoom in x direction, (256 no zoom)

scale_y

zoom in y direction, (256 no zoom)

pivot

x,y pivot coordinates of rotation

Examples

References

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lv_image_buf_get_transformed_area() function

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