1 files changed, 23 insertions, 0 deletions
diff --git a/drape/utils/projection.cpp b/drape/utils/projection.cpp
new file mode 100644
index 0000000000..ba7c30c11a
--- /dev/null
+++ b/drape/utils/projection.cpp
@@ -0,0 +1,23 @@
+#include "projection.hpp"
+
+namespace dp
+{
+
+void MakeProjection(array<float, 16> & result, float left, float right, float bottom, float top)
+{
+  result.fill(0.0f);
+
+  float width = right - left;
+  float height = top - bottom;
+  float depth = maxDepth - minDepth;
+
+  result[0] = 2.0f / width;
+  result[3] = -(right + left) / width;
+  result[5] = 2.0f / height;
+  result[7] = -(top + bottom) / height;
+  result[10] = -2.0f / depth;
+  result[11] = -(maxDepth + minDepth) / depth;
+  result[15] = 1.0;
+}
+
+} // namespace dp