New cpp folder structure

Signed-off-by: Alexander Borsuk <me@alex.bio>

libs/drape/utils/projection.hpp

@@ -0,0 +1,20 @@
+#pragma once
+
+#include "drape/drape_global.hpp"
+
+#include "indexer/drawing_rule_def.hpp"
+
+#include <array>
+
+namespace dp
+{
+/// @todo: asymmetric values lead to in-range polygons being clipped still, might be a bug in projection matrix?
+float constexpr kMinDepth = -25000.0f;
+float constexpr kMaxDepth = 25000.0f;
+
+static_assert(kMinDepth <= drule::kMinLayeredDepthBg && drule::kMaxLayeredDepthFg <= kMaxDepth);
+static_assert(kMinDepth <= -drule::kOverlaysMaxPriority && drule::kOverlaysMaxPriority <= kMaxDepth);
+
+std::array<float, 16> MakeProjection(dp::ApiVersion apiVersion, float left, float right,
+                                     float bottom, float top);
+}  // namespace dp