godot/core/helper/math_fieldwise.cpp

/*************************************************************************/
/*  math_fieldwise.cpp                                                   */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
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/*************************************************************************/

#ifdef TOOLS_ENABLED

#include "core/helper/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);

	switch (p_source.get_type()) {

		case Variant::VECTOR2: {

			SETUP_TYPE(Vector2)

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

					return target;
		}

		case Variant::RECT2: {

			SETUP_TYPE(Rect2)

			/**/ TRY_TRANSFER_FIELD("x", pos.x) else TRY_TRANSFER_FIELD("y", pos.y) else TRY_TRANSFER_FIELD("w", size.x) else TRY_TRANSFER_FIELD("h", size.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::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::QUAT: {

			SETUP_TYPE(Quat)

			/**/ 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", pos.x) else TRY_TRANSFER_FIELD("py", pos.y) else TRY_TRANSFER_FIELD("pz", pos.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::MATRIX32: {

			SETUP_TYPE(Matrix32)

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

					return target;
		}

		case Variant::MATRIX3: {

			SETUP_TYPE(Matrix3)

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

					return target;
		}

		case Variant::TRANSFORM: {

			SETUP_TYPE(Transform)

			/**/ TRY_TRANSFER_FIELD("xx", basis.elements[0][0]) else TRY_TRANSFER_FIELD("xy", basis.elements[0][1]) else TRY_TRANSFER_FIELD("xz", basis.elements[0][2]) else TRY_TRANSFER_FIELD("yx", basis.elements[1][0]) else TRY_TRANSFER_FIELD("yy", basis.elements[1][1]) else TRY_TRANSFER_FIELD("yz", basis.elements[1][2]) else TRY_TRANSFER_FIELD("zx", basis.elements[2][0]) else TRY_TRANSFER_FIELD("zy", basis.elements[2][1]) else TRY_TRANSFER_FIELD("zz", basis.elements[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;
		}

		default: {
			ERR_FAIL_V(p_target);
		}
	}
}

#endif // TOOLS_ENABLED