Matrix3x3T: implement setRow/setCol.

libs_required/ACG/Math/Matrix3x3T.hh

@@ -98,9 +98,19 @@ class Matrix3x3T {
         Vec3 getRow(uint_fast8_t r) const {
             return Vec3((*this)(r,0), (*this)(r,1), (*this)(r,2));
         }
+        void setRow(uint_fast8_t r, const Vec3 &v) {
+            for (uint_fast8_t c = 0; c < 3; ++c) {
+                (*this)(r, c) = v[c];
+            }
+        }
         Vec3 getCol(uint_fast8_t c) const {
             return Vec3((*this)(0,c), (*this)(1,c), (*this)(2,c));
         }
+        void setCol(uint_fast8_t c, const Vec3 &v) {
+            for (uint_fast8_t r = 0; r < 3; ++r) {
+                (*this)(r, c) = v[r];
+            }
+        }
 
         constexpr Matrix3x3T operator*(const Matrix3x3T &rhs) const {
             return Matrix3x3T {{