1 files changed, 33 insertions, 0 deletions
diff --git a/src/projections/gins8.cpp b/src/projections/gins8.cpp
new file mode 100644
index 00000000..cc422437
--- /dev/null
+++ b/src/projections/gins8.cpp
@@ -0,0 +1,33 @@
+#define PJ_LIB__
+#include "projects.h"
+
+PROJ_HEAD(gins8, "Ginsburg VIII (TsNIIGAiK)") "\n\tPCyl, Sph, no inv";
+
+#define Cl 0.000952426
+#define Cp 0.162388
+#define C12 0.08333333333333333
+
+
+static XY s_forward (LP lp, PJ *P) {           /* Spheroidal, forward */
+    XY xy = {0.0,0.0};
+    double t = lp.phi * lp.phi;
+    (void) P;
+
+    xy.y = lp.phi * (1. + t * C12);
+    xy.x = lp.lam * (1. - Cp * t);
+    t = lp.lam * lp.lam;
+    xy.x *= (0.87 - Cl * t * t);
+
+    return xy;
+}
+
+
+PJ *PROJECTION(gins8) {
+    P->es = 0.0;
+    P->inv = nullptr;
+    P->fwd = s_forward;
+
+    return P;
+}
+
+