diff --git a/esphome/components/display/display.cpp b/esphome/components/display/display.cpp index 63c74e09ca..145a4f5278 100644 --- a/esphome/components/display/display.cpp +++ b/esphome/components/display/display.cpp @@ -156,6 +156,148 @@ void Display::filled_circle(int center_x, int center_y, int radius, Color color) } } while (dx <= 0); } +void Display::filled_ring(int center_x, int center_y, int radius1, int radius2, Color color) { + int rmax = radius1 > radius2 ? radius1 : radius2; + int rmin = radius1 < radius2 ? radius1 : radius2; + int dxmax = -int32_t(rmax), dxmin = -int32_t(rmin); + int dymax = 0, dymin = 0; + int errmax = 2 - 2 * rmax, errmin = 2 - 2 * rmin; + int e2max, e2min; + do { + // 8 dots for borders + this->draw_pixel_at(center_x - dxmax, center_y + dymax, color); + this->draw_pixel_at(center_x + dxmax, center_y + dymax, color); + this->draw_pixel_at(center_x - dxmin, center_y + dymin, color); + this->draw_pixel_at(center_x + dxmin, center_y + dymin, color); + this->draw_pixel_at(center_x + dxmax, center_y - dymax, color); + this->draw_pixel_at(center_x - dxmax, center_y - dymax, color); + this->draw_pixel_at(center_x + dxmin, center_y - dymin, color); + this->draw_pixel_at(center_x - dxmin, center_y - dymin, color); + if (dymin < rmin) { + // two parts - four lines + int hline_width = -(dxmax - dxmin) + 1; + this->horizontal_line(center_x + dxmax, center_y + dymax, hline_width, color); + this->horizontal_line(center_x - dxmin, center_y + dymax, hline_width, color); + this->horizontal_line(center_x + dxmax, center_y - dymax, hline_width, color); + this->horizontal_line(center_x - dxmin, center_y - dymax, hline_width, color); + } else { + // one part - top and bottom + int hline_width = 2 * (-dxmax) + 1; + this->horizontal_line(center_x + dxmax, center_y + dymax, hline_width, color); + this->horizontal_line(center_x + dxmax, center_y - dymax, hline_width, color); + } + e2max = errmax; + // tune external + if (e2max < dymax) { + errmax += ++dymax * 2 + 1; + if (-dxmax == dymax && e2max <= dxmax) { + e2max = 0; + } + } + if (e2max > dxmax) { + errmax += ++dxmax * 2 + 1; + } + // tune internal + while (dymin < dymax && dymin < rmin) { + e2min = errmin; + if (e2min < dymin) { + errmin += ++dymin * 2 + 1; + if (-dxmin == dymin && e2min <= dxmin) { + e2min = 0; + } + } + if (e2min > dxmin) { + errmin += ++dxmin * 2 + 1; + } + } + } while (dxmax <= 0); +} +void Display::filled_gauge(int center_x, int center_y, int radius1, int radius2, int progress, Color color) { + int rmax = radius1 > radius2 ? radius1 : radius2; + int rmin = radius1 < radius2 ? radius1 : radius2; + int dxmax = -int32_t(rmax), dxmin = -int32_t(rmin), upd_dxmax, upd_dxmin; + int dymax = 0, dymin = 0; + int errmax = 2 - 2 * rmax, errmin = 2 - 2 * rmin; + int e2max, e2min; + progress = std::max(0, std::min(progress, 100)); // 0..100 + int draw_progress = progress > 50 ? (100 - progress) : progress; + float tan_a = (progress == 50) ? 65535 : tan(float(draw_progress) * M_PI / 100); // slope + + do { + // outer dots + this->draw_pixel_at(center_x + dxmax, center_y - dymax, color); + this->draw_pixel_at(center_x - dxmax, center_y - dymax, color); + if (dymin < rmin) { // side parts + int lhline_width = -(dxmax - dxmin) + 1; + if (progress >= 50) { + if (float(dymax) < float(-dxmax) * tan_a) { + upd_dxmax = ceil(float(dymax) / tan_a); + } else { + upd_dxmax = -dxmax; + } + this->horizontal_line(center_x + dxmax, center_y - dymax, lhline_width, color); // left + if (!dymax) + this->horizontal_line(center_x - dxmin, center_y, lhline_width, color); // right horizontal border + if (upd_dxmax > -dxmin) { // right + int rhline_width = (upd_dxmax + dxmin) + 1; + this->horizontal_line(center_x - dxmin, center_y - dymax, + rhline_width > lhline_width ? lhline_width : rhline_width, color); + } + } else { + if (float(dymin) > float(-dxmin) * tan_a) { + upd_dxmin = ceil(float(dymin) / tan_a); + } else { + upd_dxmin = -dxmin; + } + lhline_width = -(dxmax + upd_dxmin) + 1; + if (!dymax) + this->horizontal_line(center_x - dxmin, center_y, lhline_width, color); // right horizontal border + if (lhline_width > 0) + this->horizontal_line(center_x + dxmax, center_y - dymax, lhline_width, color); + } + } else { // top part + int hline_width = 2 * (-dxmax) + 1; + if (progress >= 50) { + if (dymax < float(-dxmax) * tan_a) { + upd_dxmax = ceil(float(dymax) / tan_a); + hline_width = -dxmax + upd_dxmax + 1; + } + } else { + if (dymax < float(-dxmax) * tan_a) { + upd_dxmax = ceil(float(dymax) / tan_a); + hline_width = -dxmax - upd_dxmax + 1; + } else + hline_width = 0; + } + if (hline_width > 0) + this->horizontal_line(center_x + dxmax, center_y - dymax, hline_width, color); + } + e2max = errmax; + if (e2max < dymax) { + errmax += ++dymax * 2 + 1; + if (-dxmax == dymax && e2max <= dxmax) { + e2max = 0; + } + } + if (e2max > dxmax) { + errmax += ++dxmax * 2 + 1; + } + while (dymin <= dymax && dymin <= rmin && dxmin <= 0) { + this->draw_pixel_at(center_x + dxmin, center_y - dymin, color); + this->draw_pixel_at(center_x - dxmin, center_y - dymin, color); + e2min = errmin; + if (e2min < dymin) { + errmin += ++dymin * 2 + 1; + if (-dxmin == dymin && e2min <= dxmin) { + e2min = 0; + } + } + if (e2min > dxmin) { + errmin += ++dxmin * 2 + 1; + } + } + } while (dxmax <= 0); +} void HOT Display::triangle(int x1, int y1, int x2, int y2, int x3, int y3, Color color) { this->line(x1, y1, x2, y2, color); this->line(x1, y1, x3, y3, color); diff --git a/esphome/components/display/display.h b/esphome/components/display/display.h index 34feafea6e..54e897cdec 100644 --- a/esphome/components/display/display.h +++ b/esphome/components/display/display.h @@ -285,6 +285,13 @@ class Display : public PollingComponent { /// Fill a circle centered around [center_x,center_y] with the radius radius with the given color. void filled_circle(int center_x, int center_y, int radius, Color color = COLOR_ON); + /// Fill a ring centered around [center_x,center_y] between two circles with the radius1 and radius2 with the given + /// color. + void filled_ring(int center_x, int center_y, int radius1, int radius2, Color color = COLOR_ON); + /// Fill a half-ring "gauge" centered around [center_x,center_y] between two circles with the radius1 and radius2 + /// with he given color and filled up to 'progress' percent + void filled_gauge(int center_x, int center_y, int radius1, int radius2, int progress, Color color = COLOR_ON); + /// Draw the outline of a triangle contained between the points [x1,y1], [x2,y2] and [x3,y3] with the given color. void triangle(int x1, int y1, int x2, int y2, int x3, int y3, Color color = COLOR_ON); diff --git a/tests/components/display/common.yaml b/tests/components/display/common.yaml index 1df2665067..4fc4fafa25 100644 --- a/tests/components/display/common.yaml +++ b/tests/components/display/common.yaml @@ -34,3 +34,7 @@ display: it.line_at_angle(centerX, centerY, minuteAngle, radius - 5, radius); } + + // Nice ring around and some gauge + it.filled_ring(centerX, centerY, radius+5, radius+8); + it.filled_gauge(centerX, centerY, radius/2, radius/2-5, 66);