pandemonium_engine_minimal/core/math/math_fieldwise.cpp

/*  math_fieldwise.cpp                                                   */


#ifdef TOOLS_ENABLED

#include "math_fieldwise.h"

#define SETUP_TYPE(m_type)    \
	m_type source = p_source; \
	m_type target = p_target;
#define TRY_TRANSFER_FIELD(m_name, m_member) \
	if (p_field == m_name) {                 \
		target.m_member = source.m_member;   \
	}

Variant fieldwise_assign(const Variant &p_target, const Variant &p_source, const String &p_field) {
	ERR_FAIL_COND_V(p_target.get_type() != p_source.get_type(), p_target);

	/* clang-format makes a mess of this macro usage */
	/* clang-format off */

	switch (p_source.get_type()) {
		case Variant::RECT2: {
			SETUP_TYPE(Rect2)

			/**/ TRY_TRANSFER_FIELD("x", position.x)
			else TRY_TRANSFER_FIELD("y", position.y)
			else TRY_TRANSFER_FIELD("w", size.x)
			else TRY_TRANSFER_FIELD("h", size.y)

			return target;
		}

		case Variant::RECT2I: {
			SETUP_TYPE(Rect2i)

			/**/ TRY_TRANSFER_FIELD("x", position.x)
			else TRY_TRANSFER_FIELD("y", position.y)
			else TRY_TRANSFER_FIELD("w", size.x)
			else TRY_TRANSFER_FIELD("h", size.y)

			return target;
		}

		case Variant::VECTOR2: {

			SETUP_TYPE(Vector2)

			/**/ TRY_TRANSFER_FIELD("x", x)
			else TRY_TRANSFER_FIELD("y", y)

			return target;
		}

		case Variant::VECTOR2I: {

			SETUP_TYPE(Vector2i)

			/**/ TRY_TRANSFER_FIELD("x", x)
			else TRY_TRANSFER_FIELD("y", y)

			return target;
		}

		case Variant::VECTOR3: {
			SETUP_TYPE(Vector3)

			/**/ TRY_TRANSFER_FIELD("x", x)
			else TRY_TRANSFER_FIELD("y", y)
			else TRY_TRANSFER_FIELD("z", z)

			return target;
		}

		case Variant::VECTOR3I: {

			SETUP_TYPE(Vector3i)

			/**/ TRY_TRANSFER_FIELD("x", x)
			else TRY_TRANSFER_FIELD("y", y)
			else TRY_TRANSFER_FIELD("z", z)

			return target;
		}

		case Variant::VECTOR4: {
			SETUP_TYPE(Vector4)

			/**/ TRY_TRANSFER_FIELD("x", x)
			else TRY_TRANSFER_FIELD("y", y)
			else TRY_TRANSFER_FIELD("z", z)
			else TRY_TRANSFER_FIELD("w", w)

			return target;
		}

		case Variant::VECTOR4I: {
			SETUP_TYPE(Vector4i)

			/**/ TRY_TRANSFER_FIELD("x", x)
			else TRY_TRANSFER_FIELD("y", y)
			else TRY_TRANSFER_FIELD("z", z)
			else TRY_TRANSFER_FIELD("w", w)

			return target;
		}

		case Variant::PLANE: {
			SETUP_TYPE(Plane)

			/**/ TRY_TRANSFER_FIELD("x", normal.x)
			else TRY_TRANSFER_FIELD("y", normal.y)
			else TRY_TRANSFER_FIELD("z", normal.z)
			else TRY_TRANSFER_FIELD("d", d)

			return target;
		}

		case Variant::QUATERNION: {
			SETUP_TYPE(Quaternion)

			/**/ TRY_TRANSFER_FIELD("x", x)
			else TRY_TRANSFER_FIELD("y", y)
			else TRY_TRANSFER_FIELD("z", z)
			else TRY_TRANSFER_FIELD("w", w)

			return target;
		}

		case Variant::AABB: {
			SETUP_TYPE(AABB)

			/**/ TRY_TRANSFER_FIELD("px", position.x)
			else TRY_TRANSFER_FIELD("py", position.y)
			else TRY_TRANSFER_FIELD("pz", position.z)
			else TRY_TRANSFER_FIELD("sx", size.x)
			else TRY_TRANSFER_FIELD("sy", size.y)
			else TRY_TRANSFER_FIELD("sz", size.z)

			return target;
		}

		case Variant::BASIS: {
			SETUP_TYPE(Basis)

			/**/ TRY_TRANSFER_FIELD("xx", rows[0][0])
			else TRY_TRANSFER_FIELD("xy", rows[0][1])
			else TRY_TRANSFER_FIELD("xz", rows[0][2])
			else TRY_TRANSFER_FIELD("yx", rows[1][0])
			else TRY_TRANSFER_FIELD("yy", rows[1][1])
			else TRY_TRANSFER_FIELD("yz", rows[1][2])
			else TRY_TRANSFER_FIELD("zx", rows[2][0])
			else TRY_TRANSFER_FIELD("zy", rows[2][1])
			else TRY_TRANSFER_FIELD("zz", rows[2][2])

			return target;
		}

		case Variant::TRANSFORM: {
			SETUP_TYPE(Transform)

			/**/ TRY_TRANSFER_FIELD("xx", basis.rows[0][0])
			else TRY_TRANSFER_FIELD("xy", basis.rows[0][1])
			else TRY_TRANSFER_FIELD("xz", basis.rows[0][2])
			else TRY_TRANSFER_FIELD("yx", basis.rows[1][0])
			else TRY_TRANSFER_FIELD("yy", basis.rows[1][1])
			else TRY_TRANSFER_FIELD("yz", basis.rows[1][2])
			else TRY_TRANSFER_FIELD("zx", basis.rows[2][0])
			else TRY_TRANSFER_FIELD("zy", basis.rows[2][1])
			else TRY_TRANSFER_FIELD("zz", basis.rows[2][2])
			else TRY_TRANSFER_FIELD("xo", origin.x)
			else TRY_TRANSFER_FIELD("yo", origin.y)
			else TRY_TRANSFER_FIELD("zo", origin.z)

			return target;
		}

		case Variant::TRANSFORM2D: {

			SETUP_TYPE(Transform2D)

			/**/ TRY_TRANSFER_FIELD("xx", columns[0][0])
			else TRY_TRANSFER_FIELD("xy", columns[0][1])
			else TRY_TRANSFER_FIELD("yx", columns[1][0])
			else TRY_TRANSFER_FIELD("yy", columns[1][1])
			else TRY_TRANSFER_FIELD("ox", columns[2][0])
			else TRY_TRANSFER_FIELD("oy", columns[2][1])

			return target;
		}

		default: {
			ERR_FAIL_V(p_target);
		}
	}
	/* clang-format on */
}

#endif // TOOLS_ENABLED