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add new object type: lv_arc

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Gabor Kiss-Vamosi
2018-06-08 10:26:10 +02:00
parent f2d380ce96
commit ea323d260e
8 changed files with 410 additions and 17 deletions
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26
lv_draw/lv_draw_arc.c
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@@ -40,32 +40,34 @@ static void hor_line(lv_coord_t x, lv_coord_t y, const lv_area_t * mask, lv_coor
* Draw an arc. (Can draw pie too with great thickness.)
* @param center_x the x coordinate of the center of the arc
* @param center_y the y coordinate of the center of the arc
* @param mask the arc will be drawn only in this mask
* @param radius the radius of the arc
* @param mask the arc will be drawn only in this mask
* @param start_angle the start angle of the arc (0 deg on the bottom, 90 deg on the right)
* @param end_angle the end angle of the arc
* @param thickness the thickness of the arc (set the `radius` to draw pie)
* @param style style of the arc (`body.thickness`, `body.main_color`, `body.opa` is used)
*/
void lv_draw_arc(lv_coord_t center_x, lv_coord_t center_y, const lv_area_t * mask, uint16_t radius,
uint16_t start_angle, uint16_t end_angle, uint16_t tickness)
void lv_draw_arc(lv_coord_t center_x, lv_coord_t center_y, uint16_t radius, const lv_area_t * mask,
uint16_t start_angle, uint16_t end_angle, const lv_style_t * style)
{
lv_coord_t thickness = style->body.thickness;
if(thickness > radius) thickness = radius;
lv_coord_t r_out = radius;
lv_coord_t r_in = r_out - tickness;
lv_coord_t r_in = r_out - thickness;
int16_t deg_base;
int16_t deg;
lv_coord_t x_start[4];
lv_coord_t x_end[4];
lv_color_t color = LV_COLOR_RED;
lv_opa_t opa = LV_OPA_50;
lv_color_t color = style->body.main_color;
lv_opa_t opa = style->body.opa;
// Good, may not be the fastest
// Does not draw overlapping pixels
deg = 270;//BSP_LCD_FastAtan2(-r_out, 0);
if ((270 >= start_angle) && (270 <= end_angle)) hor_line(center_x - r_out + 1, center_y, mask, tickness - 1, color, opa); // Left Middle
if ((90 >= start_angle) && (90 <= end_angle)) hor_line(center_x + r_in, center_y, mask, tickness - 1, color, opa); // Right Middle
if ((180 >= start_angle) && (180 <= end_angle)) ver_line(center_x, center_y - r_out + 1, mask, tickness - 1, color, opa); // Top Middle
if ((0 >= start_angle) && (0 <= end_angle)) ver_line(center_x, center_y + r_in, mask, tickness - 1, color, opa); // Bottom middle
if ((270 >= start_angle) && (270 <= end_angle)) hor_line(center_x - r_out + 1, center_y, mask, thickness - 1, color, opa); // Left Middle
if ((90 >= start_angle) && (90 <= end_angle)) hor_line(center_x + r_in, center_y, mask, thickness - 1, color, opa); // Right Middle
if ((180 >= start_angle) && (180 <= end_angle)) ver_line(center_x, center_y - r_out + 1, mask, thickness - 1, color, opa); // Top Middle
if ((0 >= start_angle) && (0 <= end_angle)) ver_line(center_x, center_y + r_in, mask, thickness - 1, color, opa); // Bottom middle
uint32_t r_out_sqr = r_out * r_out;
uint32_t r_in_sqr = r_in * r_in;