diff options
Diffstat (limited to 'src/mbgl/map/transform_state.cpp')
-rw-r--r-- | src/mbgl/map/transform_state.cpp | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/src/mbgl/map/transform_state.cpp b/src/mbgl/map/transform_state.cpp index bbf7e22b31..d1a320beae 100644 --- a/src/mbgl/map/transform_state.cpp +++ b/src/mbgl/map/transform_state.cpp @@ -132,7 +132,7 @@ double TransformState::getZoom() const { return scaleZoom(scale); } -int32_t TransformState::getIntegerZoom() const { +uint8_t TransformState::getIntegerZoom() const { return getZoom(); } @@ -358,7 +358,7 @@ void TransformState::setLatLngZoom(const LatLng& latLng, double zoom) { constrained = bounds->constrain(latLng); } - double newScale = zoomScale(zoom); + 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; @@ -385,4 +385,16 @@ void TransformState::setScalePoint(const double newScale, const ScreenCoordinate Cc = Projection::worldSize(scale) / util::M2PI; } +float TransformState::getCameraToTileDistance(const UnwrappedTileID& tileID) const { + mat4 projectionMatrix; + getProjMatrix(projectionMatrix); + mat4 tileProjectionMatrix; + matrixFor(tileProjectionMatrix, tileID); + matrix::multiply(tileProjectionMatrix, projectionMatrix, tileProjectionMatrix); + vec4 tileCenter = {{util::tileSize / 2, util::tileSize / 2, 0, 1}}; + vec4 projectedCenter; + matrix::transformMat4(projectedCenter, tileCenter, tileProjectionMatrix); + return projectedCenter[3]; +} + } // namespace mbgl |