void
MapOverlayBitmap::Draw(Canvas &canvas,
const WindowProjection &projection) noexcept
{
if (!simple_bounds.Overlaps(projection.GetScreenBounds()))
/* not visible, outside of screen area */
return;
const RasterPoint vertices[] = {
projection.GeoToScreen(bounds.top_left),
projection.GeoToScreen(bounds.top_right),
projection.GeoToScreen(bounds.bottom_left),
projection.GeoToScreen(bounds.bottom_right),
};
const ScopeVertexPointer vp(vertices);
GLTexture &texture = *bitmap.GetNative();
texture.Bind();
const PixelSize allocated = texture.GetAllocatedSize();
const unsigned src_x = 0, src_y = 0;
const unsigned src_width = texture.GetWidth();
const unsigned src_height = texture.GetHeight();
GLfloat x0 = (GLfloat)src_x / allocated.cx;
GLfloat y0 = (GLfloat)src_y / allocated.cy;
GLfloat x1 = (GLfloat)(src_x + src_width) / allocated.cx;
GLfloat y1 = (GLfloat)(src_y + src_height) / allocated.cy;
if (bitmap.IsFlipped()) {
y0 = 1 - y0;
y1 = 1 - y1;
}
const Point2D<GLfloat> coord[] = {
{x0, y0},
{x1, y0},
{x0, y1},
{x1, y1},
};
const ScopeTextureConstantAlpha blend(alpha);
#ifdef USE_GLSL
OpenGL::texture_shader->Use();
glEnableVertexAttribArray(OpenGL::Attribute::TEXCOORD);
glVertexAttribPointer(OpenGL::Attribute::TEXCOORD, 2, GL_FLOAT, GL_FALSE,
0, coord);
#else
const GLEnable<GL_TEXTURE_2D> scope;
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer(2, GL_FLOAT, 0, coord);
#endif
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
#ifdef USE_GLSL
glDisableVertexAttribArray(OpenGL::Attribute::TEXCOORD);
OpenGL::solid_shader->Use();
#else
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
#endif
}
void
TopographyFileRenderer::UpdateVisibleShapes(const WindowProjection &projection)
{
if (file.GetSerial() == visible_serial &&
visible_bounds.IsInside(projection.GetScreenBounds()) &&
projection.GetScreenBounds().Scale(fixed_two).IsInside(visible_bounds))
/* cache is clean */
return;
visible_serial = file.GetSerial();
visible_bounds = projection.GetScreenBounds().Scale(fixed(1.2));
visible_shapes.clear();
visible_labels.clear();
for (auto it = file.begin(), end = file.end(); it != end; ++it) {
const XShape &shape = *it;
if (!visible_bounds.Overlaps(shape.get_bounds()))
continue;
if (shape.get_type() != MS_SHAPE_NULL)
visible_shapes.push_back(&shape);
if (shape.get_label() != NULL)
visible_labels.push_back(&shape);
}
}
bool
TopographyFile::Update(const WindowProjection &map_projection)
{
if (IsEmpty())
return false;
if (map_projection.GetMapScale() > scale_threshold)
/* not visible, don't update cache now */
return false;
const GeoBounds screenRect =
map_projection.GetScreenBounds();
if (cache_bounds.IsValid() && cache_bounds.IsInside(screenRect))
/* the cache is still fresh */
return false;
cache_bounds = map_projection.GetScreenBounds().Scale(fixed(2));
rectObj deg_bounds = ConvertRect(cache_bounds);
// Test which shapes are inside the given bounds and save the
// status to file.status
msShapefileWhichShapes(&file, dir, deg_bounds, 0);
// If not a single shape is inside the bounds
if (!file.status) {
// ... clear the whole buffer
ClearCache();
return false;
}
// Iterate through the shapefile entries
const ShapeList **current = &first;
auto it = shapes.begin();
for (int i = 0; i < file.numshapes; ++i, ++it) {
if (!msGetBit(file.status, i)) {
// If the shape is outside the bounds
// delete the shape from the cache
delete it->shape;
it->shape = NULL;
} else {
// is inside the bounds
if (it->shape == NULL)
// shape isn't cached yet -> cache the shape
it->shape = new XShape(&file, i, label_field);
// update list pointer
*current = it;
current = &it->next;
}
}
// end of list marker
*current = NULL;
++serial;
return true;
}
void
MapOverlayBitmap::Draw(Canvas &canvas,
const WindowProjection &projection) noexcept
{
if (!simple_bounds.Overlaps(projection.GetScreenBounds()))
/* not visible, outside of screen area */
return;
auto clipped = Clip(bounds, projection.GetScreenBounds());
if (clipped.empty())
return;
GLTexture &texture = *bitmap.GetNative();
const PixelSize allocated = texture.GetAllocatedSize();
const double x_factor = double(texture.GetWidth()) / allocated.cx;
const double y_factor = double(texture.GetHeight()) / allocated.cy;
Point2D<GLfloat> coord[16];
BulkPixelPoint vertices[16];
const ScopeVertexPointer vp(vertices);
texture.Bind();
const ScopeTextureConstantAlpha blend(use_bitmap_alpha, alpha);
glEnableVertexAttribArray(OpenGL::Attribute::TEXCOORD);
glVertexAttribPointer(OpenGL::Attribute::TEXCOORD, 2, GL_FLOAT, GL_FALSE,
0, coord);
for (const auto &polygon : clipped) {
const auto &ring = polygon.outer();
size_t n = ring.size();
if (ring.front() == ring.back())
--n;
for (size_t i = 0; i < n; ++i) {
const auto v = GeoFrom2D(ring[i]);
auto p = MapInQuadrilateral(bounds, v);
coord[i].x = p.x * x_factor;
coord[i].y = p.y * y_factor;
if (bitmap.IsFlipped())
coord[i].y = 1 - coord[i].y;
vertices[i] = projection.GeoToScreen(v);
}
glDrawArrays(GL_TRIANGLE_FAN, 0, n);
}
glDisableVertexAttribArray(OpenGL::Attribute::TEXCOORD);
}
void
TopographyThread::Trigger(const WindowProjection &_projection)
{
assert(_projection.IsValid());
const GeoBounds new_bounds = _projection.GetScreenBounds();
if (last_bounds.IsValid() && last_bounds.IsInside(new_bounds)) {
/* still inside cache bounds - now check if we crossed a scale
threshold for at least one file, which would mean we have to
update a file which was not updated for the current cache
bounds */
if (scale_threshold < 0 ||
_projection.GetMapScale() >= scale_threshold)
/* the cache is still fresh */
return;
}
last_bounds = new_bounds.Scale(1.1);
scale_threshold = store.GetNextScaleThreshold(_projection.GetMapScale());
{
const ScopeLock protect(mutex);
next_projection = _projection;
StandbyThread::Trigger();
}
}
bool
RaspRenderer::Generate(const WindowProjection &projection,
const TerrainRendererSettings &settings)
{
const auto &style = LookupWeatherTerrainStyle(cache.GetMapName());
const bool do_water = style.do_water;
const unsigned height_scale = style.height_scale;
const int interp_levels = 5;
const ColorRamp *color_ramp = style.color_ramp;
const RasterMap *map = cache.GetMap();
if (map == nullptr)
return false;
if (!map->GetBounds().Overlaps(projection.GetScreenBounds()))
/* not visible */
return false;
if (color_ramp != last_color_ramp) {
raster_renderer.PrepareColorTable(color_ramp, do_water,
height_scale, interp_levels);
last_color_ramp = color_ramp;
}
raster_renderer.ScanMap(*map, projection);
raster_renderer.GenerateImage(false, height_scale,
settings.contrast, settings.brightness,
Angle::Zero(), false);
return true;
}
void
TerrainRenderer::Generate(const WindowProjection &map_projection,
const Angle sunazimuth)
{
#ifdef ENABLE_OPENGL
const GeoBounds &old_bounds = raster_renderer.GetBounds();
const GeoBounds &new_bounds = map_projection.GetScreenBounds();
assert(new_bounds.IsValid());
if (old_bounds.IsValid() && old_bounds.IsInside(new_bounds) &&
!IsLargeSizeDifference(old_bounds, new_bounds) &&
terrain_serial == terrain->GetSerial() &&
sunazimuth.CompareRoughly(last_sun_azimuth) &&
!raster_renderer.UpdateQuantisation())
/* no change since previous frame */
return;
#else
if (compare_projection.Compare(map_projection) &&
terrain_serial == terrain->GetSerial() &&
sunazimuth.CompareRoughly(last_sun_azimuth))
/* no change since previous frame */
return;
compare_projection = CompareProjection(map_projection);
#endif
terrain_serial = terrain->GetSerial();
last_sun_azimuth = sunazimuth;
const bool do_water = true;
const unsigned height_scale = 4;
const int interp_levels = 2;
const bool is_terrain = true;
const bool do_shading = is_terrain &&
settings.slope_shading != SlopeShading::OFF;
const bool do_contour = is_terrain &&
settings.contours != Contours::OFF;
const ColorRamp *const color_ramp = &terrain_colors[settings.ramp][0];
if (color_ramp != last_color_ramp) {
raster_renderer.ColorTable(color_ramp, do_water,
height_scale, interp_levels);
last_color_ramp = color_ramp;
}
{
RasterTerrain::Lease map(*terrain);
raster_renderer.ScanMap(map, map_projection);
}
raster_renderer.GenerateImage(do_shading, height_scale,
settings.contrast, settings.brightness,
sunazimuth,
do_contour);
}
AirspaceFillRenderer(Canvas &_canvas, const WindowProjection &_projection,
const AirspaceLook &_look,
const AirspaceWarningCopy &_warnings,
const AirspaceRendererSettings &_settings)
:MapCanvas(_canvas, _projection,
_projection.GetScreenBounds().Scale(fixed(1.1))),
look(_look), warning_manager(_warnings), settings(_settings)
{
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
AirspaceOutlineRenderer(Canvas &_canvas, const WindowProjection &_projection,
const AirspaceLook &_airspace_look,
bool _black)
:MapCanvas(_canvas, _projection,
_projection.GetScreenBounds().Scale(fixed(1.1))),
airspace_look(_airspace_look),
black(_black) {
if (black)
canvas.SelectBlackPen();
canvas.SelectHollowBrush();
}
AirspaceOutlineRenderer(Canvas &_canvas, const WindowProjection &_projection,
const AirspaceLook &_look,
const AirspaceRendererSettings &_settings)
:MapCanvas(_canvas, _projection,
_projection.GetScreenBounds().Scale(fixed(1.1))),
look(_look), settings(_settings)
{
if (settings.black_outline)
canvas.SelectBlackPen();
canvas.SelectHollowBrush();
}
StencilMapCanvas::StencilMapCanvas(Canvas &_buffer, Canvas &_stencil,
const WindowProjection &_proj,
const AirspaceRendererSettings &_settings)
:clip(_proj.GetScreenBounds().Scale(fixed(1.1))),
buffer(_buffer),
stencil(_stencil),
proj(_proj),
buffer_drawn(false),
use_stencil(false),
settings(_settings)
{
}
AirspaceVisitorRenderer(Canvas &_canvas, const WindowProjection &_projection,
const AirspaceLook &_look,
const AirspaceWarningCopy &_warnings,
const AirspaceRendererSettings &_settings)
:MapCanvas(_canvas, _projection,
_projection.GetScreenBounds().Scale(fixed(1.1))),
look(_look), warning_manager(_warnings), settings(_settings)
{
glStencilMask(0xff);
glClear(GL_STENCIL_BUFFER_BIT);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
MapDrawHelper::MapDrawHelper(Canvas &_canvas, Canvas &_buffer, Canvas &_stencil,
const WindowProjection &_proj,
const AirspaceRendererSettings &_settings)
:clip(_proj.GetScreenBounds().Scale(fixed(1.1))),
m_canvas(_canvas),
m_buffer(_buffer),
m_stencil(_stencil),
m_proj(_proj),
m_buffer_drawn(false),
m_use_stencil(false),
settings(_settings)
{
}
void
RasterRenderer::ScanMap(const RasterMap &map, const WindowProjection &projection)
{
// Coordinates of the MapWindow center
unsigned x = projection.GetScreenWidth() / 2;
unsigned y = projection.GetScreenHeight() / 2;
// GeoPoint corresponding to the MapWindow center
GeoPoint center = projection.ScreenToGeo(x, y);
// GeoPoint "next to" Gmid (depends on terrain resolution)
GeoPoint neighbor = projection.ScreenToGeo(x + quantisation_pixels,
y + quantisation_pixels);
// Geographical edge length of pixel in the MapWindow center in meters
pixel_size = M_SQRT1_2 * center.DistanceS(neighbor);
// set resolution
if (pixel_size < 3000) {
// Data point size of the (terrain) map in meters multiplied by 256
auto map_pixel_size = map.PixelDistance(center, 1);
// How many screen pixels does one data point stretch?
auto q = map_pixel_size / pixel_size;
/* round down to reduce slope shading artefacts (caused by
RasterBuffer interpolation) */
quantisation_effective = std::max(1, (int)q);
/* disable slope shading when zoomed in very near (not enough
terrain resolution to make a useful slope calculation) */
if (quantisation_effective > 25)
quantisation_effective = 0;
} else
/* disable slope shading when zoomed out very far (too tiny) */
quantisation_effective = 0;
#ifdef ENABLE_OPENGL
bounds = projection.GetScreenBounds().Scale(1.5);
bounds.IntersectWith(map.GetBounds());
height_matrix.Fill(map, bounds,
projection.GetScreenWidth() / quantisation_pixels,
projection.GetScreenHeight() / quantisation_pixels,
true);
last_quantisation_pixels = quantisation_pixels;
#else
height_matrix.Fill(map, projection, quantisation_pixels, true);
#endif
}
void
RasterRenderer::ScanMap(const RasterMap &map, const WindowProjection &projection)
{
// Coordinates of the MapWindow center
unsigned x = projection.GetScreenWidth() / 2;
unsigned y = projection.GetScreenHeight() / 2;
// GeoPoint corresponding to the MapWindow center
GeoPoint Gmid = projection.ScreenToGeo(x, y);
// GeoPoint "next to" Gmid (depends on terrain resolution)
GeoPoint Gneighbor = projection.ScreenToGeo(x + quantisation_pixels,
y + quantisation_pixels);
// Geographical edge length of pixel in the MapWindow center in meters
pixel_size = fixed_sqrt_half * Gmid.Distance(Gneighbor);
// set resolution
if (pixel_size < fixed(3000)) {
/* round down to reduce slope shading artefacts (caused by
RasterBuffer interpolation) */
fixed map_pixel_size = map.PixelDistance(Gmid, 1);
fixed q = map_pixel_size / pixel_size;
quantisation_effective = std::max(1, (int)q);
if (quantisation_effective > 25)
/* disable slope shading when zoomed in very near (not enough
terrain resolution to make a useful slope calculation) */
quantisation_effective = 0;
} else
/* disable slope shading when zoomed out very far (too tiny) */
quantisation_effective = 0;
#ifdef ENABLE_OPENGL
bounds = projection.GetScreenBounds().Scale(fixed(1.5));
height_matrix.Fill(map, bounds,
projection.GetScreenWidth() / quantisation_pixels,
projection.GetScreenHeight() / quantisation_pixels,
true);
last_quantisation_pixels = quantisation_pixels;
#else
height_matrix.Fill(map, projection, quantisation_pixels, true);
#endif
}
static void
PaintTask(Canvas &canvas, const WindowProjection &projection,
const OrderedTask &task,
const GeoPoint &location, const MapSettings &settings_map,
const TaskLook &task_look,
const AirspaceLook &airspace_look,
const RasterTerrain *terrain)
{
BackgroundRenderer background;
background.SetTerrain(terrain);
background.Draw(canvas, projection, settings_map.terrain);
OZRenderer ozv(task_look, airspace_look, settings_map.airspace);
RenderTaskPoint tpv(canvas, projection, task_look,
task.GetTaskProjection(),
ozv, false, RenderTaskPoint::NONE, location);
TaskRenderer dv(tpv, projection.GetScreenBounds());
dv.Draw(task);
}
static void
PaintTask(Canvas &canvas, const WindowProjection &projection,
const OrderedTask &task,
const GeoPoint &location, const SETTINGS_MAP &settings_map,
const TaskLook &task_look,
const AirspaceLook &airspace_look,
const RasterTerrain *terrain)
{
BackgroundDrawHelper background;
background.set_terrain(terrain);
background.Draw(canvas, projection, settings_map.terrain);
RenderObservationZone ozv(task_look, airspace_look);
RenderTaskPoint tpv(canvas, NULL, projection, settings_map, task_look,
task.get_task_projection(),
ozv, false, false, location);
RenderTask dv(tpv, projection.GetScreenBounds());
dv.Visit(task);
}
static void
PaintTask(Canvas &canvas, const WindowProjection &projection,
const OrderedTask &task,
const GeoPoint &location, const MapSettings &settings_map,
const TaskLook &task_look,
const AirspaceLook &airspace_look,
const RasterTerrain *terrain, const Airspaces *airspaces)
{
BackgroundRenderer background;
background.SetTerrain(terrain);
background.Draw(canvas, projection, settings_map.terrain);
if (airspaces != NULL) {
AirspaceRenderer airspace_renderer(airspace_look);
airspace_renderer.SetAirspaces(airspaces);
#ifndef ENABLE_OPENGL
BufferCanvas buffer_canvas, stencil_canvas;
buffer_canvas.set(canvas);
stencil_canvas.set(canvas);
#endif
airspace_renderer.Draw(canvas,
#ifndef ENABLE_OPENGL
buffer_canvas, stencil_canvas,
#endif
projection,
settings_map.airspace);
}
#ifdef ENABLE_OPENGL
/* desaturate the map background, to focus on the task */
canvas.FadeToWhite(0xc0);
#endif
OZRenderer ozv(task_look, airspace_look, settings_map.airspace);
RenderTaskPoint tpv(canvas, projection, task_look,
task.GetTaskProjection(),
ozv, false, RenderTaskPoint::NONE, location);
TaskRenderer dv(tpv, projection.GetScreenBounds());
dv.Draw(task);
}
void
RenderFAISector(Canvas &canvas, const WindowProjection &projection,
const GeoPoint &pt1, const GeoPoint &pt2,
bool reverse, const FAITriangleSettings &settings)
{
GeoPoint geo_points[FAI_TRIANGLE_SECTOR_MAX];
GeoPoint *geo_end = GenerateFAITriangleArea(geo_points, pt1, pt2,
reverse, settings);
GeoPoint clipped[FAI_TRIANGLE_SECTOR_MAX * 3],
*clipped_end = clipped +
GeoClip(projection.GetScreenBounds().Scale(fixed(1.1)))
.ClipPolygon(clipped, geo_points, geo_end - geo_points);
RasterPoint points[FAI_TRIANGLE_SECTOR_MAX], *p = points;
for (GeoPoint *geo_i = clipped; geo_i != clipped_end;)
*p++ = projection.GeoToScreen(*geo_i++);
canvas.DrawPolygon(points, p - points);
}
RenderTaskPoint::RenderTaskPoint(Canvas &_canvas,
const WindowProjection &_projection,
const TaskLook &_task_look,
const TaskProjection &_task_projection,
OZRenderer &_ozv,
bool _draw_bearing,
TargetVisibility _target_visibility,
const GeoPoint &_location)
:canvas(_canvas), m_proj(_projection),
map_canvas(_canvas, _projection,
_projection.GetScreenBounds().Scale(fixed(1.1))),
task_look(_task_look),
task_projection(_task_projection),
draw_bearing(_draw_bearing),
target_visibility(_target_visibility),
index(0),
ozv(_ozv),
active_index(0),
location(_location),
mode_optional_start(false)
{
}
void
TrailRenderer::Draw(Canvas &canvas, const TraceComputer &trace_computer,
const WindowProjection &projection, unsigned min_time,
bool enable_traildrift, const RasterPoint pos,
const NMEAInfo &basic, const DerivedInfo &calculated,
const TrailSettings &settings)
{
if (settings.length == TrailSettings::Length::OFF)
return;
if (!LoadTrace(trace_computer, min_time, projection))
return;
if (!calculated.wind_available)
enable_traildrift = false;
GeoPoint traildrift;
if (enable_traildrift) {
GeoPoint tp1 = FindLatitudeLongitude(basic.location,
calculated.wind.bearing,
calculated.wind.norm);
traildrift = basic.location - tp1;
}
auto minmax = GetMinMax(settings.type, trace);
auto value_min = minmax.first;
auto value_max = minmax.second;
bool scaled_trail = settings.scaling_enabled &&
projection.GetMapScale() <= 6000;
const GeoBounds bounds = projection.GetScreenBounds().Scale(4);
RasterPoint last_point = RasterPoint(0, 0);
bool last_valid = false;
for (auto it = trace.begin(), end = trace.end(); it != end; ++it) {
const GeoPoint gp = enable_traildrift
? it->GetLocation().Parametric(traildrift,
it->CalculateDrift(basic.time))
: it->GetLocation();
if (!bounds.IsInside(gp)) {
/* the point is outside of the MapWindow; don't paint it */
last_valid = false;
continue;
}
RasterPoint pt = projection.GeoToScreen(gp);
if (last_valid) {
if (settings.type == TrailSettings::Type::ALTITUDE) {
unsigned index = GetAltitudeColorIndex(it->GetAltitude(),
value_min, value_max);
canvas.Select(look.trail_pens[index]);
canvas.DrawLinePiece(last_point, pt);
} else {
unsigned color_index = GetSnailColorIndex(it->GetVario(),
value_min, value_max);
if (it->GetVario() < 0 &&
(settings.type == TrailSettings::Type::VARIO_1_DOTS ||
settings.type == TrailSettings::Type::VARIO_2_DOTS ||
settings.type == TrailSettings::Type::VARIO_DOTS_AND_LINES)) {
canvas.SelectNullPen();
canvas.Select(look.trail_brushes[color_index]);
canvas.DrawCircle((pt.x + last_point.x) / 2, (pt.y + last_point.y) / 2,
look.trail_widths[color_index]);
} else {
// positive vario case
if (settings.type == TrailSettings::Type::VARIO_DOTS_AND_LINES) {
canvas.Select(look.trail_brushes[color_index]);
canvas.Select(look.trail_pens[color_index]); //fixed-width pen
canvas.DrawCircle((pt.x + last_point.x) / 2, (pt.y + last_point.y) / 2,
look.trail_widths[color_index]);
} else if (scaled_trail)
// width scaled to vario
canvas.Select(look.scaled_trail_pens[color_index]);
else
// fixed-width pen
canvas.Select(look.trail_pens[color_index]);
canvas.DrawLinePiece(last_point, pt);
}
}
}
last_point = pt;
last_valid = true;
}
if (last_valid)
canvas.DrawLine(last_point, pos);
}
void
TrailRenderer::Draw(Canvas &canvas, const TraceComputer &trace_computer,
const WindowProjection &projection, unsigned min_time,
bool enable_traildrift, const RasterPoint pos,
const NMEAInfo &basic, const DerivedInfo &calculated,
const MapSettings &settings)
{
if (settings.trail_length == TRAIL_OFF)
return;
if (!LoadTrace(trace_computer, min_time, projection))
return;
if (!calculated.wind_available)
enable_traildrift = false;
GeoPoint traildrift;
if (enable_traildrift) {
GeoPoint tp1 = FindLatitudeLongitude(basic.location,
calculated.wind.bearing,
calculated.wind.norm);
traildrift = basic.location - tp1;
}
fixed value_max, value_min;
if (settings.snail_type == stAltitude) {
value_max = fixed(1000);
value_min = fixed(500);
for (auto it = trace.begin(); it != trace.end(); ++it) {
value_max = max(it->GetAltitude(), value_max);
value_min = min(it->GetAltitude(), value_min);
}
} else {
value_max = fixed(0.75);
value_min = fixed(-2.0);
for (auto it = trace.begin(); it != trace.end(); ++it) {
value_max = max(it->GetVario(), value_max);
value_min = min(it->GetVario(), value_min);
}
value_max = min(fixed(7.5), value_max);
value_min = max(fixed(-5.0), value_min);
}
bool scaled_trail = settings.snail_scaling_enabled &&
projection.GetMapScale() <= fixed_int_constant(6000);
const GeoBounds bounds = projection.GetScreenBounds().Scale(fixed_four);
RasterPoint last_point;
bool last_valid = false;
for (auto it = trace.begin(), end = trace.end(); it != end; ++it) {
const GeoPoint gp = enable_traildrift
? it->get_location().Parametric(traildrift,
it->CalculateDrift(basic.time))
: it->get_location();
if (!bounds.IsInside(gp)) {
/* the point is outside of the MapWindow; don't paint it */
last_valid = false;
continue;
}
RasterPoint pt = projection.GeoToScreen(gp);
if (last_valid) {
if (settings.snail_type == stAltitude) {
unsigned index((it->GetAltitude() - value_min) / (value_max - value_min)
* (TrailLook::NUMSNAILCOLORS - 1));
index = max(0u, min(TrailLook::NUMSNAILCOLORS - 1, index));
canvas.Select(look.hpSnail[index]);
} else {
const fixed colour_vario = negative(it->GetVario())
? - it->GetVario() / value_min
: it->GetVario() / value_max ;
if (!scaled_trail)
canvas.Select(look.hpSnail[GetSnailColorIndex(colour_vario)]);
else
canvas.Select(look.hpSnailVario[GetSnailColorIndex(colour_vario)]);
}
canvas.line_piece(last_point, pt);
}
last_point = pt;
last_valid = true;
}
canvas.line(last_point, pos);
}
void
TopographyFileRenderer::Paint(Canvas &canvas,
const WindowProjection &projection)
{
if (file.IsEmpty())
return;
fixed map_scale = projection.GetMapScale();
if (!file.IsVisible(map_scale))
return;
UpdateVisibleShapes(projection);
if (visible_shapes.empty())
return;
// TODO code: only draw inside screen!
// this will save time with rendering pixmaps especially
// we already do an outer visibility test, but may need a test
// in screen coords
#ifdef ENABLE_OPENGL
pen.Set();
brush.Set();
#else
shape_renderer.Configure(&pen, &brush);
#endif
// get drawing info
#ifdef ENABLE_OPENGL
const unsigned level = file.GetThinningLevel(map_scale);
const unsigned min_distance = file.GetMinimumPointDistance(level)
/ Layout::Scale(1);
#ifndef HAVE_GLES
float opengl_matrix[16];
glGetFloatv(GL_MODELVIEW_MATRIX, opengl_matrix);
#endif
glPushMatrix();
fixed angle = projection.GetScreenAngle().Degrees();
fixed scale = projection.GetScale();
const RasterPoint &screen_origin = projection.GetScreenOrigin();
#ifdef HAVE_GLES
#ifdef FIXED_MATH
GLfixed fixed_angle = angle.as_glfixed();
GLfixed fixed_scale = scale.as_glfixed_scale();
#else
GLfixed fixed_angle = angle * (1<<16);
GLfixed fixed_scale = scale * (1LL<<32);
#endif
glTranslatex((int)screen_origin.x << 16, (int)screen_origin.y << 16, 0);
glRotatex(fixed_angle, 0, 0, -(1<<16));
glScalex(fixed_scale, fixed_scale, 1<<16);
#else
glTranslatef(screen_origin.x, screen_origin.y, 0.);
glRotatef((GLfloat)angle, 0., 0., -1.);
glScalef((GLfloat)scale, (GLfloat)scale, 1.);
#endif
#else // !ENABLE_OPENGL
const GeoClip clip(projection.GetScreenBounds().Scale(fixed(1.1)));
AllocatedArray<GeoPoint> geo_points;
int iskip = file.GetSkipSteps(map_scale);
#endif
for (auto it = visible_shapes.begin(), end = visible_shapes.end();
it != end; ++it) {
const XShape &shape = **it;
if (!projection.GetScreenBounds().Overlaps(shape.get_bounds()))
continue;
#ifdef ENABLE_OPENGL
const ShapePoint *points = shape.get_points();
const ShapePoint translation =
shape.shape_translation(projection.GetGeoLocation());
glPushMatrix();
#ifdef HAVE_GLES
glTranslatex(translation.x, translation.y, 0);
#else
glTranslatef(translation.x, translation.y, 0.);
#endif
#else // !ENABLE_OPENGL
const unsigned short *lines = shape.get_lines();
const unsigned short *end_lines = lines + shape.get_number_of_lines();
const GeoPoint *points = shape.get_points();
#endif
switch (shape.get_type()) {
case MS_SHAPE_NULL:
break;
case MS_SHAPE_POINT:
#ifdef ENABLE_OPENGL
#ifdef HAVE_GLES
PaintPoint(canvas, projection, shape, NULL);
#else
PaintPoint(canvas, projection, shape, opengl_matrix);
#endif
#else // !ENABLE_OPENGL
PaintPoint(canvas, projection, lines, end_lines, points);
#endif
break;
case MS_SHAPE_LINE:
{
#ifdef ENABLE_OPENGL
#ifdef HAVE_GLES
glVertexPointer(2, GL_FIXED, 0, &points[0].x);
#else
glVertexPointer(2, GL_INT, 0, &points[0].x);
#endif
const GLushort *indices, *count;
if (level == 0 ||
(indices = shape.get_indices(level, min_distance, count)) == NULL) {
count = shape.get_lines();
const GLushort *end_count = count + shape.get_number_of_lines();
for (int offset = 0; count < end_count; offset += *count++)
glDrawArrays(GL_LINE_STRIP, offset, *count);
} else {
const GLushort *end_count = count + shape.get_number_of_lines();
for (; count < end_count; indices += *count++)
glDrawElements(GL_LINE_STRIP, *count, GL_UNSIGNED_SHORT, indices);
}
#else // !ENABLE_OPENGL
for (; lines < end_lines; ++lines) {
unsigned msize = *lines;
shape_renderer.Begin(msize);
const GeoPoint *end = points + msize - 1;
for (; points < end; ++points)
shape_renderer.AddPointIfDistant(projection.GeoToScreen(*points));
// make sure we always draw the last point
shape_renderer.AddPoint(projection.GeoToScreen(*points));
shape_renderer.FinishPolyline(canvas);
}
#endif
}
break;
case MS_SHAPE_POLYGON:
#ifdef ENABLE_OPENGL
{
const GLushort *index_count;
const GLushort *triangles = shape.get_indices(level, min_distance,
index_count);
#ifdef HAVE_GLES
glVertexPointer(2, GL_FIXED, 0, &points[0].x);
#else
glVertexPointer(2, GL_INT, 0, &points[0].x);
#endif
glDrawElements(GL_TRIANGLE_STRIP, *index_count, GL_UNSIGNED_SHORT,
triangles);
}
#else // !ENABLE_OPENGL
for (; lines < end_lines; ++lines) {
unsigned msize = *lines / iskip;
/* copy all polygon points into the geo_points array and clip
them, to avoid integer overflows (as RasterPoint may store
only 16 bit integers on some platforms) */
geo_points.GrowDiscard(msize * 3);
for (unsigned i = 0; i < msize; ++i)
geo_points[i] = points[i * iskip];
msize = clip.ClipPolygon(geo_points.begin(),
geo_points.begin(), msize);
if (msize < 3)
continue;
shape_renderer.Begin(msize);
for (unsigned i = 0; i < msize; ++i) {
GeoPoint g = geo_points[i];
shape_renderer.AddPointIfDistant(projection.GeoToScreen(g));
}
shape_renderer.FinishPolygon(canvas);
}
#endif
break;
}
#ifdef ENABLE_OPENGL
glPopMatrix();
#endif
}
#ifdef ENABLE_OPENGL
glPopMatrix();
#else
shape_renderer.Commit();
#endif
}
void
TrailRenderer::Draw(Canvas &canvas, const TraceComputer &trace_computer,
const WindowProjection &projection, unsigned min_time,
bool enable_traildrift, const RasterPoint pos,
const NMEAInfo &basic, const DerivedInfo &calculated,
const TrailSettings &settings)
{
if (settings.length == TrailSettings::Length::OFF)
return;
if (!LoadTrace(trace_computer, min_time, projection))
return;
if (!calculated.wind_available)
enable_traildrift = false;
GeoPoint traildrift;
if (enable_traildrift) {
GeoPoint tp1 = FindLatitudeLongitude(basic.location,
calculated.wind.bearing,
calculated.wind.norm);
traildrift = basic.location - tp1;
}
fixed value_max, value_min;
GetMinMax(value_min, value_max, settings.type, trace);
bool scaled_trail = settings.scaling_enabled &&
projection.GetMapScale() <= fixed_int_constant(6000);
const GeoBounds bounds = projection.GetScreenBounds().Scale(fixed_four);
RasterPoint last_point;
bool last_valid = false;
for (auto it = trace.begin(), end = trace.end(); it != end; ++it) {
const GeoPoint gp = enable_traildrift
? it->GetLocation().Parametric(traildrift,
it->CalculateDrift(basic.time))
: it->GetLocation();
if (!bounds.IsInside(gp)) {
/* the point is outside of the MapWindow; don't paint it */
last_valid = false;
continue;
}
RasterPoint pt = projection.GeoToScreen(gp);
if (last_valid) {
if (settings.type == TrailSettings::Type::ALTITUDE) {
unsigned index((it->GetAltitude() - value_min) / (value_max - value_min)
* (TrailLook::NUMSNAILCOLORS - 1));
index = max(0u, min(TrailLook::NUMSNAILCOLORS - 1, index));
canvas.Select(look.trail_pens[index]);
canvas.DrawLinePiece(last_point, pt);
} else {
const fixed colour_vario = negative(it->GetVario())
? - it->GetVario() / value_min
: it->GetVario() / value_max ;
unsigned color_index = GetSnailColorIndex(colour_vario);
if (negative(it->GetVario()) &&
(settings.type == TrailSettings::Type::VARIO_1_DOTS ||
settings.type == TrailSettings::Type::VARIO_2_DOTS)) {
canvas.SelectNullPen();
canvas.Select(look.trail_brushes[color_index]);
canvas.DrawCircle((pt.x + last_point.x) / 2, (pt.y + last_point.y) / 2,
look.trail_widths[color_index]);
} else {
if (!scaled_trail)
canvas.Select(look.trail_pens[color_index]);
else
canvas.Select(look.scaled_trail_pens[color_index]);
canvas.DrawLinePiece(last_point, pt);
}
}
}
last_point = pt;
last_valid = true;
}
if (last_valid)
canvas.DrawLine(last_point, pos);
}
bool
TopographyFile::Update(const WindowProjection &map_projection)
{
if (IsEmpty())
return false;
if (map_projection.GetMapScale() > scale_threshold)
/* not visible, don't update cache now */
return false;
const GeoBounds screenRect =
map_projection.GetScreenBounds();
if (cache_bounds.IsValid() && cache_bounds.IsInside(screenRect))
/* the cache is still fresh */
return false;
cache_bounds = screenRect.Scale(2);
rectObj deg_bounds = ConvertRect(cache_bounds);
// Test which shapes are inside the given bounds and save the
// status to file.status
switch (msShapefileWhichShapes(&file, dir, deg_bounds, 0)) {
case MS_FAILURE:
ClearCache();
return false;
case MS_DONE:
/* screen is outside of map bounds */
return false;
case MS_SUCCESS:
break;
}
assert(file.status != nullptr);
// Iterate through the shapefile entries
const ShapeList **current = &first;
auto it = shapes.begin();
for (int i = 0; i < file.numshapes; ++i, ++it) {
if (!msGetBit(file.status, i)) {
// If the shape is outside the bounds
// delete the shape from the cache
if (it->shape != nullptr) {
assert(*current == it);
/* remove from linked list (protected) */
{
const ScopeLock lock(mutex);
*current = it->next;
++serial;
}
/* now it's unreachable, and we can delete the XShape without
holding a lock */
delete it->shape;
it->shape = nullptr;
}
} else {
// is inside the bounds
if (it->shape == nullptr) {
assert(*current != it);
// shape isn't cached yet -> cache the shape
it->shape = LoadShape(&file, center, i, label_field);
it->next = *current;
/* insert into linked list (protected) */
{
const ScopeLock lock(mutex);
*current = it;
++serial;
}
}
current = &it->next;
}
}
// end of list marker
assert(*current == nullptr);
return true;
}
void
PaintTask(Canvas &canvas, const WindowProjection &projection,
const OrderedTask &task,
const GeoPoint &location,
const MapSettings &settings_map,
const TaskLook &task_look,
const AirspaceLook &airspace_look,
const RasterTerrain *terrain, const Airspaces *airspaces,
bool fai_sectors,
int highlight_index)
{
BackgroundRenderer background;
background.SetTerrain(terrain);
background.Draw(canvas, projection, settings_map.terrain);
if (airspaces != NULL) {
AirspaceRenderer airspace_renderer(airspace_look);
airspace_renderer.SetAirspaces(airspaces);
#ifndef ENABLE_OPENGL
BufferCanvas stencil_canvas;
stencil_canvas.Create(canvas);
#endif
airspace_renderer.Draw(canvas,
#ifndef ENABLE_OPENGL
stencil_canvas,
#endif
projection, settings_map.airspace);
}
#ifdef ENABLE_OPENGL
/* desaturate the map background, to focus on the task */
canvas.FadeToWhite(0xc0);
#endif
if (fai_sectors && IsFAITriangleApplicable(task)) {
static constexpr Color fill_color = COLOR_YELLOW;
#if defined(ENABLE_OPENGL) || defined(USE_MEMORY_CANVAS)
#ifdef ENABLE_OPENGL
const ScopeAlphaBlend alpha_blend;
#endif
canvas.Select(Brush(fill_color.WithAlpha(40)));
canvas.Select(Pen(1, COLOR_BLACK.WithAlpha(80)));
RenderFAISectors(canvas, projection, task);
#else
BufferCanvas buffer_canvas;
buffer_canvas.Create(canvas);
buffer_canvas.ClearWhite();
#ifdef HAVE_HATCHED_BRUSH
buffer_canvas.Select(airspace_look.brushes[3]);
buffer_canvas.SetTextColor(fill_color);
buffer_canvas.SetBackgroundColor(COLOR_WHITE);
#else
buffer_canvas.Select(Brush(fill_color));
#endif
buffer_canvas.SelectNullPen();
RenderFAISectors(buffer_canvas, projection, task);
canvas.CopyAnd(buffer_canvas);
canvas.SelectHollowBrush();
canvas.SelectBlackPen();
RenderFAISectors(canvas, projection, task);
#endif
}
OZRenderer ozv(task_look, airspace_look, settings_map.airspace);
TaskPointRenderer tpv(canvas, projection, task_look,
task.GetTaskProjection(),
ozv, false, TaskPointRenderer::NONE,
location);
TaskRenderer dv(tpv, projection.GetScreenBounds());
dv.Draw(task);
// highlight a task point
if (highlight_index >= 0 && highlight_index < (int) task.TaskSize()) {
/* TODO: clumsy way of highlighting. maybe it should be done by
* painting the task point with a different pen and brush,
* e.g. red, 4px wide
*/
auto pt = projection.GeoToScreen(task.GetPoint(highlight_index).
GetLocation());
canvas.Select(task_look.highlight_pen);
canvas.DrawLine(pt.x - 7, pt.y - 7, pt.x + 7, pt.y + 7);
canvas.DrawLine(pt.x + 7, pt.y - 7, pt.x - 7, pt.y + 7);
}
}
bool
TopographyFile::Update(const WindowProjection &map_projection)
{
if (IsEmpty())
return false;
if (map_projection.GetMapScale() > scale_threshold)
/* not visible, don't update cache now */
return false;
const GeoBounds screenRect =
map_projection.GetScreenBounds();
if (cache_bounds.inside(screenRect))
/* the cache is still fresh */
return false;
cache_bounds = map_projection.GetScreenBounds().scale(fixed_two);
rectObj deg_bounds = ConvertRect(cache_bounds);
// Test which shapes are inside the given bounds and save the
// status to file.status
msShapefileWhichShapes(&file, dir, deg_bounds, 0);
// If not a single shape is inside the bounds
if (!file.status) {
// ... clear the whole buffer
ClearCache();
return false;
}
// Iterate through the shapefile entries
for (int i = 0; i < file.numshapes; i++) {
if (!msGetBit(file.status, i)) {
// If the shape is outside the bounds
// delete the shape from the cache
delete shapes[i].shape;
shapes[i].shape = NULL;
} else if (shapes[i].shape == NULL) {
// If the shape is inside the bounds and if the
// shape isn't cached yet -> cache the shape
shapes[i].shape = new XShape(&file, i, label_field);
}
}
ShapeList::NotNull not_null;
XShapePointerArray::iterator end = shapes.end(), it = shapes.begin();
it = std::find_if(it, end, not_null);
if (it != shapes.end()) {
ShapeList *current = &*it;
first = current;
while (true) {
++it;
it = std::find_if(it, end, not_null);
if (it == end) {
current->next = NULL;
break;
}
ShapeList *next = &*it;
current->next = next;
current = next;
}
} else
first = NULL;
return true;
}
void
TopographyFileRenderer::PaintLabels(Canvas &canvas,
const WindowProjection &projection,
LabelBlock &label_block)
{
if (file.IsEmpty())
return;
fixed map_scale = projection.GetMapScale();
if (!file.IsVisible(map_scale) || !file.IsLabelVisible(map_scale))
return;
UpdateVisibleShapes(projection);
if (visible_labels.empty())
return;
// TODO code: only draw inside screen!
// this will save time with rendering pixmaps especially
// we already do an outer visibility test, but may need a test
// in screen coords
canvas.Select(file.IsLabelImportant(map_scale) ?
Fonts::map_label_important : Fonts::map_label);
canvas.SetTextColor(Color(0x20, 0x20, 0x20));
canvas.SetBackgroundTransparent();
// get drawing info
int iskip = file.GetSkipSteps(map_scale);
#ifdef ENABLE_OPENGL
Matrix2D m1;
m1.Translate(projection.GetScreenOrigin());
m1.Rotate(projection.GetScreenAngle());
m1.Scale(projection.GetScale());
#endif
// Iterate over all shapes in the file
for (auto it = visible_labels.begin(), end = visible_labels.end();
it != end; ++it) {
const XShape &shape = **it;
if (!projection.GetScreenBounds().Overlaps(shape.get_bounds()))
continue;
// Skip shapes without a label
const TCHAR *label = shape.get_label();
if (label == NULL)
continue;
const unsigned short *lines = shape.get_lines();
const unsigned short *end_lines = lines + shape.get_number_of_lines();
#ifdef ENABLE_OPENGL
const ShapePoint *points = shape.get_points();
Matrix2D m2(m1);
m2.Translatex(shape.shape_translation(projection.GetGeoLocation()));
#else
const GeoPoint *points = shape.get_points();
#endif
for (; lines < end_lines; ++lines) {
int minx = canvas.get_width();
int miny = canvas.get_height();
#ifdef ENABLE_OPENGL
const ShapePoint *end = points + *lines;
#else
const GeoPoint *end = points + *lines;
#endif
for (; points < end; points += iskip) {
#ifdef ENABLE_OPENGL
RasterPoint pt = m2.Apply(*points);
#else
RasterPoint pt = projection.GeoToScreen(*points);
#endif
if (pt.x <= minx) {
minx = pt.x;
miny = pt.y;
}
}
points = end;
minx += 2;
miny += 2;
PixelSize tsize = canvas.CalcTextSize(label);
PixelRect brect;
brect.left = minx;
brect.right = brect.left + tsize.cx;
brect.top = miny;
brect.bottom = brect.top + tsize.cy;
if (!label_block.check(brect))
continue;
canvas.text(minx, miny, label);
}
}
}