feat: camera and resizing improvements

thermion_dart/native/include/ThermionDartAPIUtils.h

@@ -0,0 +1,27 @@
+#pragma once
+#include <math/mat4.h>
+#include "APIBoundaryTypes.h"
+
+namespace thermion {
+
+// Helper function to convert filament::math::mat4 to double4x4
+static double4x4 convert_mat4_to_double4x4(const filament::math::mat4 &mat)
+{
+    return double4x4{
+        {mat[0][0], mat[0][1], mat[0][2], mat[0][3]},
+        {mat[1][0], mat[1][1], mat[1][2], mat[1][3]},
+        {mat[2][0], mat[2][1], mat[2][2], mat[2][3]},
+        {mat[3][0], mat[3][1], mat[3][2], mat[3][3]},
+    };
+}
+
+// Helper function to convert double4x4 to filament::math::mat4
+static filament::math::mat4 convert_double4x4_to_mat4(const double4x4 &d_mat)
+{
+    return filament::math::mat4{
+        filament::math::float4{float(d_mat.col1[0]), float(d_mat.col1[1]), float(d_mat.col1[2]), float(d_mat.col1[3])},
+        filament::math::float4{float(d_mat.col2[0]), float(d_mat.col2[1]), float(d_mat.col2[2]), float(d_mat.col2[3])},
+        filament::math::float4{float(d_mat.col3[0]), float(d_mat.col3[1]), float(d_mat.col3[2]), float(d_mat.col3[3])},
+        filament::math::float4{float(d_mat.col4[0]), float(d_mat.col4[1]), float(d_mat.col4[2]), float(d_mat.col4[3])}};
+}
+}