diff --git a/src/images.h b/src/images.h index 6a9992c2..46e1f6c5 100644 --- a/src/images.h +++ b/src/images.h @@ -10,8 +10,11 @@ const uint8_t SATELLITE_IMAGE[] PROGMEM = { const #include "icon.xbm" +// We now programmatically draw our compass +#if 0 const #include "compass.xbm" +#endif #if 0 const uint8_t activeSymbol[] PROGMEM = { diff --git a/src/screen.cpp b/src/screen.cpp index f0e229b2..890acf0b 100644 --- a/src/screen.cpp +++ b/src/screen.cpp @@ -182,6 +182,43 @@ uint32_t drawRows(OLEDDisplay *display, int16_t x, int16_t y, const char **field return yo; } +/// A basic 2D point class for drawing +class Point +{ +public: + float x, y; + + Point(float _x, float _y): x(_x), y(_y) {} + + /// Apply a rotation around zero (standard rotation matrix math) + void rotate(float radian) + { + float cos = cosf(radian), + sin = sinf(radian); + float rx = x * cos - y * sin, + ry = x * sin + y * cos; + + x = rx; + y = ry; + } + + void translate(int16_t dx, int dy) { + x += dx; + y += dy; + } + + void scale(float f) { + x *= f; + y *= f; + } +}; + +void drawLine(OLEDDisplay *d, const Point &p1, const Point &p2) { + d->drawLine(p1.x, p1.y, p2.x, p2.y); +} + +#define COMPASS_DIAM 44 + void drawNodeInfo(OLEDDisplay *display, OLEDDisplayUiState *state, int16_t x, int16_t y) { display->setFont(ArialMT_Plain_10); @@ -191,13 +228,35 @@ void drawNodeInfo(OLEDDisplay *display, OLEDDisplayUiState *state, int16_t x, in const char *fields[] = { "Kevin Hester (KH)", - "4.2 mi", + "2.1 mi", "Signal: good", - "24 minutes ago", + "12 minutes ago", NULL}; drawColumns(display, x, y, fields); - display->drawXbm(x + (SCREEN_WIDTH - compass_width), y + (SCREEN_HEIGHT - compass_height) / 2, compass_width, compass_height, (const uint8_t *)compass_bits); + // coordinates for the center of the compass + int16_t compassX = x + SCREEN_WIDTH - COMPASS_DIAM / 2 - 1, compassY = y + SCREEN_HEIGHT / 2; + // display->drawXbm(compassX, compassY, compass_width, compass_height, (const uint8_t *)compass_bits); + + Point tip(0.0f, 0.5f), tail(0.0f, -0.5f); // pointing up initially + float arrowOffsetX = 0.1f, arrowOffsetY = 0.1f; + Point leftArrow(tip.x - arrowOffsetX, tip.y - arrowOffsetY), rightArrow(tip.x + arrowOffsetX, tip.y - arrowOffsetY); + + static float headingRadian; + headingRadian += 0.1; // For testing + + Point *points[] = { &tip, &tail, &leftArrow, &rightArrow }; + + for(int i = 0; i < 4; i++) { + points[i]->rotate(headingRadian); + points[i]->scale(COMPASS_DIAM * 0.6); + points[i]->translate(compassX, compassY); + } + drawLine(display, tip, tail); + drawLine(display, leftArrow, tip); + drawLine(display, rightArrow, tip); + + display->drawCircle(compassX, compassY, COMPASS_DIAM / 2); } void drawDebugInfo(OLEDDisplay *display, OLEDDisplayUiState *state, int16_t x, int16_t y)