lv_draw_triangle.h

API reference for lv_draw_triangle.h

Summary

Functions

Try to get a triangle draw descriptor from a draw task.

lv_draw_triangle_dsc_t * lv_draw_task_get_triangle_dsc(lv_draw_task_t *task)

Name	Type	Description
`task`	`lv_draw_task_t *`	draw task

Returns: lv_draw_triangle_dsc_t * — the task's draw descriptor or NULL if the task is not of type LV_DRAW_TASK_TYPE_TRIANGLE

Initialize a triangle draw descriptor

void lv_draw_triangle_dsc_init(lv_draw_triangle_dsc_t *draw_dsc)

Name	Type	Description
`draw_dsc`	`lv_draw_triangle_dsc_t *`	pointer to a draw descriptor

Create a triangle draw task

void lv_draw_triangle(lv_layer_t *layer, const lv_draw_triangle_dsc_t *draw_dsc)

Name	Type	Description
`layer`	`lv_layer_t *`	pointer to a layer
`draw_dsc`	`const lv_draw_triangle_dsc_t *`	pointer to an initialized `lv_draw_triangle_dsc_t` object

struct

Member	Type	Description
`base`	`lv_draw_dsc_base_t`
`p`	`lv_point_precise_t[3]`	Points of the triangle. If `LV_USE_FLOAT` is enabled floats can be used here
`color`	`lv_color_t`	Color of the triangle
`opa`	`lv_opa_t`	Opacity of the arc in 0...255 range. LV_OPA_TRANSP, LV_OPA_10, LV_OPA_20, .. LV_OPA_COVER can be used as well
`grad`	`lv_grad_dsc_t`	Describe a gradient. If `grad.dir` is not `LV_GRAD_DIR_NONE` `color` will be ignored

Used by 9 functions