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https://github.com/MarekZegare4/MeshCore-Solo.git
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12e47ea044
Phase 4. Header-only navview::draw() takes a target (lat, lon, label) plus the caller's own fix and course-over-ground, and renders distance + two absolute bearings (To / Hdg). Source-agnostic so Waypoints, Backtrack and Nearby node nav all reuse it. Not wired in yet (phases 5-6). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
64 lines
2.3 KiB
C++
64 lines
2.3 KiB
C++
#pragma once
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// Shared "navigate to a point" view. The target is just a (lat, lon, label)
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// triple, so the same screen serves Waypoints, trail Backtrack and Nearby
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// node navigation. No magnetometer: we show two *absolute* bearings — the
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// target's bearing and the user's course over ground — and let the user
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// compare them ("target 145°, I'm heading 090° → bear right").
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//
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// Pure render helper; the caller supplies its own GPS fix + COG (from UITask).
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#include <helpers/ui/DisplayDriver.h>
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#include "../GeoUtils.h"
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namespace navview {
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// own_valid : is there a usable GPS fix for the device right now
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// cog_valid : is there a stable course-over-ground (UITask::currentCourse)
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inline void draw(DisplayDriver& d,
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bool own_valid, int32_t own_lat, int32_t own_lon,
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int32_t tgt_lat, int32_t tgt_lon,
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const char* label,
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bool cog_valid, int cog_deg) {
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const int cx = d.width() / 2;
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const int hdr = d.headerH();
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// Title bar: label, inverted (matches the Nearby/discover detail style).
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char title[24];
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d.translateUTF8ToBlocks(title, (label && label[0]) ? label : "Navigate", sizeof(title));
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d.setColor(DisplayDriver::LIGHT);
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d.fillRect(0, 0, d.width(), hdr - 1);
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d.setColor(DisplayDriver::DARK);
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d.drawTextEllipsized(2, 1, d.width() - 4, title);
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d.setColor(DisplayDriver::LIGHT);
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d.fillRect(0, hdr - 1, d.width(), d.sepH());
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if (!own_valid) {
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d.drawTextCentered(cx, hdr + (d.height() - hdr) / 2 - d.getLineHeight(), "No GPS fix");
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return;
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}
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int to_deg = geo::bearingDeg(own_lat, own_lon, tgt_lat, tgt_lon);
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float dist_km = geo::haversineKm(own_lat, own_lon, tgt_lat, tgt_lon);
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char dist[12];
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geo::fmtDist(dist, sizeof(dist), dist_km);
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const int step = d.lineStep();
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int y = hdr + 2;
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// Distance — emphasised at size 2.
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d.setTextSize(2);
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d.drawTextCentered(cx, y, dist);
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y += d.getLineHeight() + 3;
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d.setTextSize(1);
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char line[20];
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snprintf(line, sizeof(line), "To: %d %s", to_deg, geo::bearingCardinal(to_deg));
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d.drawTextLeftAlign(2, y, line); y += step;
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if (cog_valid) snprintf(line, sizeof(line), "Hdg: %d %s", cog_deg, geo::bearingCardinal(cog_deg));
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else snprintf(line, sizeof(line), "Hdg: --");
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d.drawTextLeftAlign(2, y, line); y += step;
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}
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} // namespace navview
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