[coding] [geometry] Deprecated PointToInt.

For some reason we have been using bitwise merge to store
a pair of 32-bit unsigned integer coordinates. Since the
width of the coordinates is fixed and storage in general
has nothing to do with the Z-order curve where bitwise
merge is appropriate, this commit marks this method of
storage as obsolete (and effectively deprecated).

The functions to convert between PointD and PointU are
still serviceable. Their usage is slightly refactored.

1 files changed, 17 insertions, 0 deletions

diff --git a/coding/pointd_to_pointu.hpp b/coding/pointd_to_pointu.hpp
new file mode 100644
index 0000000000..e5fd99a042
--- /dev/null
+++ b/coding/pointd_to_pointu.hpp
@@ -0,0 +1,17 @@
+#pragma once
+
+#include "geometry/point2d.hpp"
+
+#include <cstdint>
+
+#define POINT_COORD_BITS 30
+
+uint32_t DoubleToUint32(double x, double min, double max, uint32_t coordBits);
+
+double Uint32ToDouble(uint32_t x, double min, double max, uint32_t coordBits);
+
+m2::PointU PointDToPointU(double x, double y, uint32_t coordBits);
+
+m2::PointU PointDToPointU(m2::PointD const & pt, uint32_t coordBits);
+
+m2::PointD PointUToPointD(m2::PointU const & p, uint32_t coordBits);