62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
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#include "shared-bindings/vectorio/Circle.h"
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#include "shared-module/vectorio/__init__.h"
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#include "shared-module/displayio/area.h"
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#include "py/runtime.h"
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#include "stdlib.h"
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void common_hal_vectorio_circle_construct(vectorio_circle_t *self, uint16_t radius) {
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self->radius = radius;
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self->on_dirty.obj = NULL;
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}
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void common_hal_vectorio_circle_set_on_dirty(vectorio_circle_t *self, vectorio_event_t on_dirty) {
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if (self->on_dirty.obj != NULL) {
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mp_raise_TypeError(translate("circle can only be registered in one parent"));
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}
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self->on_dirty = on_dirty;
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}
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uint32_t common_hal_vectorio_circle_get_pixel(void *obj, int16_t x, int16_t y) {
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vectorio_circle_t *self = obj;
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int16_t radius = abs(self->radius);
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x = abs(x);
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y = abs(y);
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if (x + y <= radius) {
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return 1;
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}
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if (x > radius) {
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return 0;
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}
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if (y > radius) {
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return 0;
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}
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const bool pythagorasSmallerThanRadius = (int32_t)x * x + (int32_t)y * y <= (int32_t)radius * radius;
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return pythagorasSmallerThanRadius ? 1 : 0;
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}
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void common_hal_vectorio_circle_get_area(void *circle, displayio_area_t *out_area) {
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vectorio_circle_t *self = circle;
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out_area->x1 = -1 * self->radius - 1;
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out_area->y1 = -1 * self->radius - 1;
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out_area->x2 = self->radius + 1;
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out_area->y2 = self->radius + 1;
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}
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int16_t common_hal_vectorio_circle_get_radius(void *obj) {
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vectorio_circle_t *self = obj;
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return self->radius;
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}
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void common_hal_vectorio_circle_set_radius(void *obj, int16_t radius) {
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vectorio_circle_t *self = obj;
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self->radius = abs(radius);
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if (self->on_dirty.obj != NULL) {
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self->on_dirty.event(self->on_dirty.obj);
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}
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}
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