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Correct text not following map rotation

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This commit is contained in:
Dan Paulat 2023-08-06 22:49:18 -05:00
parent 6c0b62709f
commit f0c2f8eec0
2 changed files with 22 additions and 4 deletions
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24
scwx-qt/source/scwx/qt/map/placefile_layer.cpp
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@ -5,6 +5,7 @@
#include <scwx/qt/manager/settings_manager.hpp>
#include <scwx/qt/util/geographic_lib.hpp>
#include <scwx/qt/util/maplibre.hpp>
#include <scwx/common/geographic.hpp>
#include <scwx/util/logger.hpp>
#include <fmt/format.h>
@ -59,6 +60,8 @@ public:
std::uint32_t textId_ {};
glm::vec2 mapScreenCoordLocation_ {};
float mapScale_ {1.0f};
float mapBearingCos_ {1.0f};
float mapBearingSin_ {0.0f};
float halfWidth_ {};
float halfHeight_ {};
bool thresholded_ {true};
@ -149,12 +152,23 @@ void PlacefileLayer::Impl::RenderTextDrawItem(
mapScreenCoordLocation_) *
mapScale_;
// Rotate text according to map rotation
float rotatedX = screenCoordinates.x;
float rotatedY = screenCoordinates.y;
if (params.bearing != 0.0)
{
rotatedX = screenCoordinates.x * mapBearingCos_ -
screenCoordinates.y * mapBearingSin_;
rotatedY = screenCoordinates.x * mapBearingSin_ +
screenCoordinates.y * mapBearingCos_;
}
RenderText(params,
di->text_,
di->hoverText_,
di->color_,
screenCoordinates.x + di->x_ + halfWidth_,
screenCoordinates.y + di->y_ + halfHeight_);
rotatedX + di->x_ + halfWidth_,
rotatedY + di->y_ + halfHeight_);
}
}
@ -217,8 +231,10 @@ void PlacefileLayer::Render(
{params.latitude, params.longitude});
p->mapScale_ = std::pow(2.0, params.zoom) * mbgl::util::tileSize_D /
mbgl::util::DEGREES_MAX;
p->halfWidth_ = params.width * 0.5f;
p->halfHeight_ = params.height * 0.5f;
p->mapBearingCos_ = std::cosf(params.bearing * common::kDegreesToRadians);
p->mapBearingSin_ = std::sinf(params.bearing * common::kDegreesToRadians);
p->halfWidth_ = params.width * 0.5f;
p->halfHeight_ = params.height * 0.5f;
// Get monospace font pointer
std::size_t fontSize = 16;