Exemplos de setScalePoint em C++ (Cpp)

Exemplo n.º 1

Arquivo: transform_state.cpp Projeto: manimaul/mapbox-gl-native

void TransformState::setLatLngZoom(const LatLng &latLng, double zoom) {
    double newScale = zoomScale(zoom);
    const double newWorldSize = newScale * util::tileSize;
    Bc = newWorldSize / util::DEGREES_MAX;
    Cc = newWorldSize / util::M2PI;

    const double m = 1 - 1e-15;
    const double f = util::clamp(std::sin(util::DEG2RAD * latLng.latitude), -m, m);

    ScreenCoordinate point = {
        -latLng.longitude * Bc,
        0.5 * Cc * std::log((1 + f) / (1 - f)),
    };
    setScalePoint(newScale, point);
}

Exemplo n.º 2

Arquivo: transform_state.cpp Projeto: jingsam/mapbox-gl-native

void TransformState::setLatLngZoom(const LatLng& latLng, double zoom) {
    LatLng constrained = latLng;
    if (bounds) {
        constrained = bounds->constrain(latLng);
    }

    double newScale = util::clamp(zoomScale(zoom), min_scale, max_scale);
    const double newWorldSize = newScale * util::tileSize;
    Bc = newWorldSize / util::DEGREES_MAX;
    Cc = newWorldSize / util::M2PI;

    const double m = 1 - 1e-15;
    const double f = util::clamp(std::sin(util::DEG2RAD * constrained.latitude()), -m, m);

    ScreenCoordinate point = {
        -constrained.longitude() * Bc,
        0.5 * Cc * std::log((1 + f) / (1 - f)),
    };
    setScalePoint(newScale, point);
}