Implement Vector4, Vector4i, Projection

Implement built-in classes Vector4, Vector4i and Projection.

* Two versions of Vector4 (float and integer).
* A Projection class, which is a 4x4 matrix specialized in projection types.

These types have been requested for a long time, but given they were very corner case they were not added before.
Because in Godot 4, reimplementing parts of the rendering engine is now possible, access to these types (heavily used by the rendering code) becomes a necessity.

**Q**: Why Projection and not Matrix4?
**A**: Godot does not use Matrix2, Matrix3, Matrix4x3, etc. naming convention because, within the engine, these types always have a *purpose*. As such, Godot names them: Transform2D, Transform3D or Basis. In this case, this 4x4 matrix is _always_ used as a _Projection_, hence the naming.

10 files changed, 776 insertions, 39 deletions

diff --git a/doc/classes/@GlobalScope.xml b/doc/classes/@GlobalScope.xml
index fbeda641ad..30a2228294 100644
--- a/doc/classes/@GlobalScope.xml
+++ b/doc/classes/@GlobalScope.xml
@@ -2782,76 +2782,82 @@
 		<constant name="TYPE_TRANSFORM2D" value="11" enum="Variant.Type">
 			Variable is of type [Transform2D].
 		</constant>
-		<constant name="TYPE_PLANE" value="12" enum="Variant.Type">
+		<constant name="TYPE_VECTOR4" value="12" enum="Variant.Type">
+		</constant>
+		<constant name="TYPE_VECTOR4I" value="13" enum="Variant.Type">
+		</constant>
+		<constant name="TYPE_PLANE" value="14" enum="Variant.Type">
 			Variable is of type [Plane].
 		</constant>
-		<constant name="TYPE_QUATERNION" value="13" enum="Variant.Type">
+		<constant name="TYPE_QUATERNION" value="15" enum="Variant.Type">
 			Variable is of type [Quaternion].
 		</constant>
-		<constant name="TYPE_AABB" value="14" enum="Variant.Type">
+		<constant name="TYPE_AABB" value="16" enum="Variant.Type">
 			Variable is of type [AABB].
 		</constant>
-		<constant name="TYPE_BASIS" value="15" enum="Variant.Type">
+		<constant name="TYPE_BASIS" value="17" enum="Variant.Type">
 			Variable is of type [Basis].
 		</constant>
-		<constant name="TYPE_TRANSFORM3D" value="16" enum="Variant.Type">
+		<constant name="TYPE_TRANSFORM3D" value="18" enum="Variant.Type">
 			Variable is of type [Transform3D].
 		</constant>
-		<constant name="TYPE_COLOR" value="17" enum="Variant.Type">
+		<constant name="TYPE_PROJECTION" value="19" enum="Variant.Type">
+		</constant>
+		<constant name="TYPE_COLOR" value="20" enum="Variant.Type">
 			Variable is of type [Color].
 		</constant>
-		<constant name="TYPE_STRING_NAME" value="18" enum="Variant.Type">
+		<constant name="TYPE_STRING_NAME" value="21" enum="Variant.Type">
 			Variable is of type [StringName].
 		</constant>
-		<constant name="TYPE_NODE_PATH" value="19" enum="Variant.Type">
+		<constant name="TYPE_NODE_PATH" value="22" enum="Variant.Type">
 			Variable is of type [NodePath].
 		</constant>
-		<constant name="TYPE_RID" value="20" enum="Variant.Type">
+		<constant name="TYPE_RID" value="23" enum="Variant.Type">
 			Variable is of type [RID].
 		</constant>
-		<constant name="TYPE_OBJECT" value="21" enum="Variant.Type">
+		<constant name="TYPE_OBJECT" value="24" enum="Variant.Type">
 			Variable is of type [Object].
 		</constant>
-		<constant name="TYPE_CALLABLE" value="22" enum="Variant.Type">
+		<constant name="TYPE_CALLABLE" value="25" enum="Variant.Type">
 			Variable is of type [Callable].
 		</constant>
-		<constant name="TYPE_SIGNAL" value="23" enum="Variant.Type">
+		<constant name="TYPE_SIGNAL" value="26" enum="Variant.Type">
 			Variable is of type [Signal].
 		</constant>
-		<constant name="TYPE_DICTIONARY" value="24" enum="Variant.Type">
+		<constant name="TYPE_DICTIONARY" value="27" enum="Variant.Type">
 			Variable is of type [Dictionary].
 		</constant>
-		<constant name="TYPE_ARRAY" value="25" enum="Variant.Type">
+		<constant name="TYPE_ARRAY" value="28" enum="Variant.Type">
 			Variable is of type [Array].
 		</constant>
-		<constant name="TYPE_PACKED_BYTE_ARRAY" value="26" enum="Variant.Type">
+		<constant name="TYPE_PACKED_BYTE_ARRAY" value="29" enum="Variant.Type">
 			Variable is of type [PackedByteArray].
 		</constant>
-		<constant name="TYPE_PACKED_INT32_ARRAY" value="27" enum="Variant.Type">
+		<constant name="TYPE_PACKED_INT32_ARRAY" value="30" enum="Variant.Type">
 			Variable is of type [PackedInt32Array].
 		</constant>
-		<constant name="TYPE_PACKED_INT64_ARRAY" value="28" enum="Variant.Type">
+		<constant name="TYPE_PACKED_INT64_ARRAY" value="31" enum="Variant.Type">
 			Variable is of type [PackedInt64Array].
 		</constant>
-		<constant name="TYPE_PACKED_FLOAT32_ARRAY" value="29" enum="Variant.Type">
+		<constant name="TYPE_PACKED_FLOAT32_ARRAY" value="32" enum="Variant.Type">
 			Variable is of type [PackedFloat32Array].
 		</constant>
-		<constant name="TYPE_PACKED_FLOAT64_ARRAY" value="30" enum="Variant.Type">
+		<constant name="TYPE_PACKED_FLOAT64_ARRAY" value="33" enum="Variant.Type">
 			Variable is of type [PackedFloat64Array].
 		</constant>
-		<constant name="TYPE_PACKED_STRING_ARRAY" value="31" enum="Variant.Type">
+		<constant name="TYPE_PACKED_STRING_ARRAY" value="34" enum="Variant.Type">
 			Variable is of type [PackedStringArray].
 		</constant>
-		<constant name="TYPE_PACKED_VECTOR2_ARRAY" value="32" enum="Variant.Type">
+		<constant name="TYPE_PACKED_VECTOR2_ARRAY" value="35" enum="Variant.Type">
 			Variable is of type [PackedVector2Array].
 		</constant>
-		<constant name="TYPE_PACKED_VECTOR3_ARRAY" value="33" enum="Variant.Type">
+		<constant name="TYPE_PACKED_VECTOR3_ARRAY" value="36" enum="Variant.Type">
 			Variable is of type [PackedVector3Array].
 		</constant>
-		<constant name="TYPE_PACKED_COLOR_ARRAY" value="34" enum="Variant.Type">
+		<constant name="TYPE_PACKED_COLOR_ARRAY" value="37" enum="Variant.Type">
 			Variable is of type [PackedColorArray].
 		</constant>
-		<constant name="TYPE_MAX" value="35" enum="Variant.Type">
+		<constant name="TYPE_MAX" value="38" enum="Variant.Type">
 			Represents the size of the [enum Variant.Type] enum.
 		</constant>
 		<constant name="OP_EQUAL" value="0" enum="Variant.Operator">
diff --git a/doc/classes/Camera3D.xml b/doc/classes/Camera3D.xml
index 468fddcfc1..3aedbbd1e6 100644
--- a/doc/classes/Camera3D.xml
+++ b/doc/classes/Camera3D.xml
@@ -189,7 +189,7 @@
 		<member name="near" type="float" setter="set_near" getter="get_near" default="0.05">
 			The distance to the near culling boundary for this camera relative to its local Z axis.
 		</member>
-		<member name="projection" type="int" setter="set_projection" getter="get_projection" enum="Camera3D.Projection" default="0">
+		<member name="projection" type="int" setter="set_projection" getter="get_projection" enum="Camera3D.ProjectionType" default="0">
 			The camera's projection mode. In [constant PROJECTION_PERSPECTIVE] mode, objects' Z distance from the camera's local space scales their perceived size.
 		</member>
 		<member name="size" type="float" setter="set_size" getter="get_size" default="1.0">
@@ -200,13 +200,13 @@
 		</member>
 	</members>
 	<constants>
-		<constant name="PROJECTION_PERSPECTIVE" value="0" enum="Projection">
+		<constant name="PROJECTION_PERSPECTIVE" value="0" enum="ProjectionType">
 			Perspective projection. Objects on the screen becomes smaller when they are far away.
 		</constant>
-		<constant name="PROJECTION_ORTHOGONAL" value="1" enum="Projection">
+		<constant name="PROJECTION_ORTHOGONAL" value="1" enum="ProjectionType">
 			Orthogonal projection, also known as orthographic projection. Objects remain the same size on the screen no matter how far away they are.
 		</constant>
-		<constant name="PROJECTION_FRUSTUM" value="2" enum="Projection">
+		<constant name="PROJECTION_FRUSTUM" value="2" enum="ProjectionType">
 			Frustum projection. This mode allows adjusting [member frustum_offset] to create "tilted frustum" effects.
 		</constant>
 		<constant name="KEEP_WIDTH" value="0" enum="KeepAspect">
diff --git a/doc/classes/Label.xml b/doc/classes/Label.xml
index 8448109f02..1ebf770f7e 100644
--- a/doc/classes/Label.xml
+++ b/doc/classes/Label.xml
@@ -50,7 +50,6 @@
 			Controls the text's horizontal alignment. Supports left, center, right, and fill, or justify. Set it to one of the [enum HorizontalAlignment] constants.
 		</member>
 		<member name="label_settings" type="LabelSettings" setter="set_label_settings" getter="get_label_settings">
-			Resource to override [Theme] font, outline and shadow properties.
 		</member>
 		<member name="language" type="String" setter="set_language" getter="get_language" default="&quot;&quot;">
 			Language code used for line-breaking and text shaping algorithms, if left empty current locale is used instead.
diff --git a/doc/classes/LabelSettings.xml b/doc/classes/LabelSettings.xml
index 5f7427f4aa..227313d3b3 100644
--- a/doc/classes/LabelSettings.xml
+++ b/doc/classes/LabelSettings.xml
@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <class name="LabelSettings" inherits="Resource" version="4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
 	<brief_description>
-		Resource to override [Theme] font, outline and shadow properties of the [Label].
 	</brief_description>
 	<description>
 	</description>
@@ -9,31 +8,22 @@
 	</tutorials>
 	<members>
 		<member name="font" type="Font" setter="set_font" getter="get_font">
-			[Font] of the [Label]'s text.
 		</member>
 		<member name="font_color" type="Color" setter="set_font_color" getter="get_font_color" default="Color(0.875, 0.875, 0.875, 1)">
-			Default text [Color] of the [Label].
 		</member>
 		<member name="font_size" type="int" setter="set_font_size" getter="get_font_size" default="16">
-			Font size of the [Label]'s text.
 		</member>
 		<member name="line_spacing" type="float" setter="set_line_spacing" getter="get_line_spacing" default="0.0">
-			Vertical space between lines in multiline text.
 		</member>
 		<member name="outline_color" type="Color" setter="set_outline_color" getter="get_outline_color" default="Color(1, 1, 1, 1)">
-			The tint of text outline.
 		</member>
 		<member name="outline_size" type="int" setter="set_outline_size" getter="get_outline_size" default="0">
-			Text outline size.
 		</member>
 		<member name="shadow_color" type="Color" setter="set_shadow_color" getter="get_shadow_color" default="Color(1, 1, 1, 1)">
-			The tint of text shadow.
 		</member>
 		<member name="shadow_offset" type="Vector2" setter="set_shadow_offset" getter="get_shadow_offset" default="Vector2(1, 1)">
-			The offset of the text's shadow.
 		</member>
 		<member name="shadow_size" type="int" setter="set_shadow_size" getter="get_shadow_size" default="0">
-			The size of the text's shadow.
 		</member>
 	</members>
 </class>
diff --git a/doc/classes/Projection.xml b/doc/classes/Projection.xml
new file mode 100644
index 0000000000..115015c2d7
--- /dev/null
+++ b/doc/classes/Projection.xml
@@ -0,0 +1,273 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<class name="Projection" version="4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
+	<brief_description>
+	</brief_description>
+	<description>
+	</description>
+	<tutorials>
+	</tutorials>
+	<constructors>
+		<constructor name="Projection">
+			<return type="Projection" />
+			<description>
+			</description>
+		</constructor>
+		<constructor name="Projection">
+			<return type="Projection" />
+			<argument index="0" name="from" type="Projection" />
+			<description>
+			</description>
+		</constructor>
+		<constructor name="Projection">
+			<return type="Projection" />
+			<argument index="0" name="from" type="Transform3D" />
+			<description>
+			</description>
+		</constructor>
+	</constructors>
+	<methods>
+		<method name="create_depth_correction" qualifiers="static">
+			<return type="Projection" />
+			<argument index="0" name="flip_y" type="bool" />
+			<description>
+			</description>
+		</method>
+		<method name="create_fit_aabb" qualifiers="static">
+			<return type="Projection" />
+			<argument index="0" name="aabb" type="AABB" />
+			<description>
+			</description>
+		</method>
+		<method name="create_for_hmd" qualifiers="static">
+			<return type="Projection" />
+			<argument index="0" name="eye" type="int" />
+			<argument index="1" name="aspect" type="float" />
+			<argument index="2" name="intraocular_dist" type="float" />
+			<argument index="3" name="display_width" type="float" />
+			<argument index="4" name="display_to_lens" type="float" />
+			<argument index="5" name="oversample" type="float" />
+			<argument index="6" name="z_near" type="float" />
+			<argument index="7" name="z_far" type="float" />
+			<description>
+			</description>
+		</method>
+		<method name="create_frustum" qualifiers="static">
+			<return type="Projection" />
+			<argument index="0" name="left" type="float" />
+			<argument index="1" name="right" type="float" />
+			<argument index="2" name="bottom" type="float" />
+			<argument index="3" name="top" type="float" />
+			<argument index="4" name="z_near" type="float" />
+			<argument index="5" name="z_far" type="float" />
+			<description>
+			</description>
+		</method>
+		<method name="create_frustum_aspect" qualifiers="static">
+			<return type="Projection" />
+			<argument index="0" name="size" type="float" />
+			<argument index="1" name="aspect" type="float" />
+			<argument index="2" name="offset" type="Vector2" />
+			<argument index="3" name="z_near" type="float" />
+			<argument index="4" name="z_far" type="float" />
+			<argument index="5" name="flip_fov" type="bool" default="false" />
+			<description>
+			</description>
+		</method>
+		<method name="create_light_atlas_rect" qualifiers="static">
+			<return type="Projection" />
+			<argument index="0" name="rect" type="Rect2" />
+			<description>
+			</description>
+		</method>
+		<method name="create_orthogonal" qualifiers="static">
+			<return type="Projection" />
+			<argument index="0" name="left" type="float" />
+			<argument index="1" name="right" type="float" />
+			<argument index="2" name="bottom" type="float" />
+			<argument index="3" name="top" type="float" />
+			<argument index="4" name="z_near" type="float" />
+			<argument index="5" name="z_far" type="float" />
+			<description>
+			</description>
+		</method>
+		<method name="create_orthogonal_aspect" qualifiers="static">
+			<return type="Projection" />
+			<argument index="0" name="size" type="float" />
+			<argument index="1" name="aspect" type="float" />
+			<argument index="2" name="z_near" type="float" />
+			<argument index="3" name="z_far" type="float" />
+			<argument index="4" name="flip_fov" type="bool" default="false" />
+			<description>
+			</description>
+		</method>
+		<method name="create_perspective" qualifiers="static">
+			<return type="Projection" />
+			<argument index="0" name="fovy" type="float" />
+			<argument index="1" name="aspect" type="float" />
+			<argument index="2" name="z_near" type="float" />
+			<argument index="3" name="z_far" type="float" />
+			<argument index="4" name="flip_fov" type="bool" default="false" />
+			<description>
+			</description>
+		</method>
+		<method name="create_perspective_hmd" qualifiers="static">
+			<return type="Projection" />
+			<argument index="0" name="fovy" type="float" />
+			<argument index="1" name="aspect" type="float" />
+			<argument index="2" name="z_near" type="float" />
+			<argument index="3" name="z_far" type="float" />
+			<argument index="4" name="flip_fov" type="bool" />
+			<argument index="5" name="eye" type="int" />
+			<argument index="6" name="intraocular_dist" type="float" />
+			<argument index="7" name=" convergence_dist" type="float" />
+			<description>
+			</description>
+		</method>
+		<method name="determinant" qualifiers="const">
+			<return type="float" />
+			<description>
+			</description>
+		</method>
+		<method name="flipped_y" qualifiers="const">
+			<return type="Projection" />
+			<description>
+			</description>
+		</method>
+		<method name="get_aspect" qualifiers="const">
+			<return type="float" />
+			<description>
+			</description>
+		</method>
+		<method name="get_far_plane_half_extents" qualifiers="const">
+			<return type="Vector2" />
+			<description>
+			</description>
+		</method>
+		<method name="get_fov" qualifiers="const">
+			<return type="float" />
+			<description>
+			</description>
+		</method>
+		<method name="get_fovy" qualifiers="static">
+			<return type="float" />
+			<argument index="0" name="fovx" type="float" />
+			<argument index="1" name="aspect" type="float" />
+			<description>
+			</description>
+		</method>
+		<method name="get_lod_multiplier" qualifiers="const">
+			<return type="float" />
+			<description>
+			</description>
+		</method>
+		<method name="get_pixels_per_meter" qualifiers="const">
+			<return type="int" />
+			<argument index="0" name="for_pixel_width" type="int" />
+			<description>
+			</description>
+		</method>
+		<method name="get_projection_plane" qualifiers="const">
+			<return type="Plane" />
+			<argument index="0" name="plane" type="int" />
+			<description>
+			</description>
+		</method>
+		<method name="get_viewport_half_extents" qualifiers="const">
+			<return type="Vector2" />
+			<description>
+			</description>
+		</method>
+		<method name="get_z_far" qualifiers="const">
+			<return type="float" />
+			<description>
+			</description>
+		</method>
+		<method name="get_z_near" qualifiers="const">
+			<return type="float" />
+			<description>
+			</description>
+		</method>
+		<method name="inverse" qualifiers="const">
+			<return type="Projection" />
+			<description>
+			</description>
+		</method>
+		<method name="is_orthogonal" qualifiers="const">
+			<return type="bool" />
+			<description>
+			</description>
+		</method>
+		<method name="jitter_offseted" qualifiers="const">
+			<return type="Projection" />
+			<argument index="0" name="offset" type="Vector2" />
+			<description>
+			</description>
+		</method>
+		<method name="perspective_znear_adjusted" qualifiers="const">
+			<return type="Projection" />
+			<argument index="0" name="new_znear" type="float" />
+			<description>
+			</description>
+		</method>
+	</methods>
+	<members>
+		<member name="w" type="Vector4" setter="" getter="" default="Vector4(0, 0, 0)">
+		</member>
+		<member name="x" type="Vector4" setter="" getter="" default="Vector4(1, 0, 0)">
+		</member>
+		<member name="y" type="Vector4" setter="" getter="" default="Vector4(0, 1, 0)">
+		</member>
+		<member name="z" type="Vector4" setter="" getter="" default="Vector4(0, 0, 1)">
+		</member>
+	</members>
+	<constants>
+		<constant name="PLANE_NEAR" value="0">
+		</constant>
+		<constant name="PLANE_FAR" value="1">
+		</constant>
+		<constant name="PLANE_LEFT" value="2">
+		</constant>
+		<constant name="PLANE_TOP" value="3">
+		</constant>
+		<constant name="PLANE_RIGHT" value="4">
+		</constant>
+		<constant name="PLANE_BOTTOM" value="5">
+		</constant>
+		<constant name="IDENTITY" value="Projection(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)">
+		</constant>
+		<constant name="ZERO" value="Projection(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)">
+		</constant>
+	</constants>
+	<operators>
+		<operator name="operator !=">
+			<return type="bool" />
+			<argument index="0" name="right" type="Projection" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator *">
+			<return type="Projection" />
+			<argument index="0" name="right" type="Projection" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator *">
+			<return type="Vector4" />
+			<argument index="0" name="right" type="Vector4" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator ==">
+			<return type="bool" />
+			<argument index="0" name="right" type="Projection" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator []">
+			<return type="Vector4" />
+			<argument index="0" name="index" type="int" />
+			<description>
+			</description>
+		</operator>
+	</operators>
+</class>
diff --git a/doc/classes/Transform3D.xml b/doc/classes/Transform3D.xml
index afd11b6c77..147eba9f25 100644
--- a/doc/classes/Transform3D.xml
+++ b/doc/classes/Transform3D.xml
@@ -39,6 +39,12 @@
 		</constructor>
 		<constructor name="Transform3D">
 			<return type="Transform3D" />
+			<argument index="0" name="from" type="Projection" />
+			<description>
+			</description>
+		</constructor>
+		<constructor name="Transform3D">
+			<return type="Transform3D" />
 			<argument index="0" name="x_axis" type="Vector3" />
 			<argument index="1" name="y_axis" type="Vector3" />
 			<argument index="2" name="z_axis" type="Vector3" />
diff --git a/doc/classes/Vector4.xml b/doc/classes/Vector4.xml
new file mode 100644
index 0000000000..e1175e57bd
--- /dev/null
+++ b/doc/classes/Vector4.xml
@@ -0,0 +1,231 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<class name="Vector4" version="4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
+	<brief_description>
+	</brief_description>
+	<description>
+	</description>
+	<tutorials>
+	</tutorials>
+	<constructors>
+		<constructor name="Vector4">
+			<return type="Vector4" />
+			<description>
+			</description>
+		</constructor>
+		<constructor name="Vector4">
+			<return type="Vector4" />
+			<argument index="0" name="from" type="Vector4" />
+			<description>
+			</description>
+		</constructor>
+		<constructor name="Vector4">
+			<return type="Vector4" />
+			<argument index="0" name="from" type="Vector4i" />
+			<description>
+			</description>
+		</constructor>
+		<constructor name="Vector4">
+			<return type="Vector4" />
+			<argument index="0" name="x" type="float" />
+			<argument index="1" name="y" type="float" />
+			<argument index="2" name="z" type="float" />
+			<argument index="3" name="w" type="float" />
+			<description>
+			</description>
+		</constructor>
+	</constructors>
+	<methods>
+		<method name="abs" qualifiers="const">
+			<return type="Vector4" />
+			<description>
+			</description>
+		</method>
+		<method name="clamp" qualifiers="const">
+			<return type="Vector4" />
+			<argument index="0" name="min" type="Vector4" />
+			<argument index="1" name="max" type="Vector4" />
+			<description>
+			</description>
+		</method>
+		<method name="dot" qualifiers="const">
+			<return type="float" />
+			<argument index="0" name="with" type="Vector4" />
+			<description>
+			</description>
+		</method>
+		<method name="inverse" qualifiers="const">
+			<return type="Vector4" />
+			<description>
+			</description>
+		</method>
+		<method name="is_equal_approx" qualifiers="const">
+			<return type="bool" />
+			<argument index="0" name="with" type="Vector4" />
+			<description>
+			</description>
+		</method>
+		<method name="is_normalized" qualifiers="const">
+			<return type="bool" />
+			<description>
+			</description>
+		</method>
+		<method name="length" qualifiers="const">
+			<return type="float" />
+			<description>
+			</description>
+		</method>
+		<method name="length_squared" qualifiers="const">
+			<return type="float" />
+			<description>
+			</description>
+		</method>
+		<method name="max_axis_index" qualifiers="const">
+			<return type="int" />
+			<description>
+			</description>
+		</method>
+		<method name="min_axis_index" qualifiers="const">
+			<return type="int" />
+			<description>
+			</description>
+		</method>
+		<method name="normalized" qualifiers="const">
+			<return type="Vector4" />
+			<description>
+			</description>
+		</method>
+		<method name="sign" qualifiers="const">
+			<return type="Vector4" />
+			<description>
+			</description>
+		</method>
+	</methods>
+	<members>
+		<member name="w" type="float" setter="" getter="" default="0.0">
+		</member>
+		<member name="x" type="float" setter="" getter="" default="0.0">
+		</member>
+		<member name="y" type="float" setter="" getter="" default="0.0">
+		</member>
+		<member name="z" type="float" setter="" getter="" default="0.0">
+		</member>
+	</members>
+	<constants>
+		<constant name="AXIS_X" value="0">
+		</constant>
+		<constant name="AXIS_Y" value="1">
+		</constant>
+		<constant name="AXIS_Z" value="2">
+		</constant>
+		<constant name="AXIS_W" value="3">
+		</constant>
+		<constant name="ZERO" value="Vector4(0, 0, 0)">
+		</constant>
+		<constant name="ONE" value="Vector4(1, 1, 1)">
+		</constant>
+		<constant name="INF" value="Vector4(inf, inf, inf)">
+		</constant>
+	</constants>
+	<operators>
+		<operator name="operator !=">
+			<return type="bool" />
+			<argument index="0" name="right" type="Vector4" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator *">
+			<return type="Vector4" />
+			<argument index="0" name="right" type="Projection" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator *">
+			<return type="Vector4" />
+			<argument index="0" name="right" type="Vector4" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator *">
+			<return type="Vector4" />
+			<argument index="0" name="right" type="float" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator *">
+			<return type="Vector4" />
+			<argument index="0" name="right" type="int" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator +">
+			<return type="Vector4" />
+			<argument index="0" name="right" type="Vector4" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator -">
+			<return type="Vector4" />
+			<argument index="0" name="right" type="Vector4" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator /">
+			<return type="Vector4" />
+			<argument index="0" name="right" type="Vector4" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator /">
+			<return type="Vector4" />
+			<argument index="0" name="right" type="float" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator /">
+			<return type="Vector4" />
+			<argument index="0" name="right" type="int" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator &lt;">
+			<return type="bool" />
+			<argument index="0" name="right" type="Vector4" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator &lt;=">
+			<return type="bool" />
+			<argument index="0" name="right" type="Vector4" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator ==">
+			<return type="bool" />
+			<argument index="0" name="right" type="Vector4" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator &gt;">
+			<return type="bool" />
+			<argument index="0" name="right" type="Vector4" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator &gt;=">
+			<return type="bool" />
+			<argument index="0" name="right" type="Vector4" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator unary+">
+			<return type="Vector4" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator unary-">
+			<return type="Vector4" />
+			<description>
+			</description>
+		</operator>
+	</operators>
+</class>
diff --git a/doc/classes/Vector4i.xml b/doc/classes/Vector4i.xml
new file mode 100644
index 0000000000..c3114e20e2
--- /dev/null
+++ b/doc/classes/Vector4i.xml
@@ -0,0 +1,208 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<class name="Vector4i" version="4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
+	<brief_description>
+	</brief_description>
+	<description>
+	</description>
+	<tutorials>
+	</tutorials>
+	<constructors>
+		<constructor name="Vector4i">
+			<return type="Vector4i" />
+			<description>
+			</description>
+		</constructor>
+		<constructor name="Vector4i">
+			<return type="Vector4i" />
+			<argument index="0" name="from" type="Vector4i" />
+			<description>
+			</description>
+		</constructor>
+		<constructor name="Vector4i">
+			<return type="Vector4i" />
+			<argument index="0" name="from" type="Vector4" />
+			<description>
+			</description>
+		</constructor>
+		<constructor name="Vector4i">
+			<return type="Vector4i" />
+			<argument index="0" name="x" type="int" />
+			<argument index="1" name="y" type="int" />
+			<argument index="2" name="z" type="int" />
+			<argument index="3" name="w" type="int" />
+			<description>
+			</description>
+		</constructor>
+	</constructors>
+	<methods>
+		<method name="abs" qualifiers="const">
+			<return type="Vector4i" />
+			<description>
+			</description>
+		</method>
+		<method name="clamp" qualifiers="const">
+			<return type="Vector4i" />
+			<argument index="0" name="min" type="Vector4i" />
+			<argument index="1" name="max" type="Vector4i" />
+			<description>
+			</description>
+		</method>
+		<method name="length" qualifiers="const">
+			<return type="float" />
+			<description>
+			</description>
+		</method>
+		<method name="length_squared" qualifiers="const">
+			<return type="int" />
+			<description>
+			</description>
+		</method>
+		<method name="max_axis_index" qualifiers="const">
+			<return type="int" />
+			<description>
+			</description>
+		</method>
+		<method name="min_axis_index" qualifiers="const">
+			<return type="int" />
+			<description>
+			</description>
+		</method>
+		<method name="sign" qualifiers="const">
+			<return type="Vector4i" />
+			<description>
+			</description>
+		</method>
+	</methods>
+	<members>
+		<member name="w" type="int" setter="" getter="" default="0">
+		</member>
+		<member name="x" type="int" setter="" getter="" default="0">
+		</member>
+		<member name="y" type="int" setter="" getter="" default="0">
+		</member>
+		<member name="z" type="int" setter="" getter="" default="0">
+		</member>
+	</members>
+	<constants>
+		<constant name="AXIS_X" value="0">
+		</constant>
+		<constant name="AXIS_Y" value="1">
+		</constant>
+		<constant name="AXIS_Z" value="2">
+		</constant>
+		<constant name="AXIS_W" value="3">
+		</constant>
+		<constant name="ZERO" value="Vector4i(0, 0, 0)">
+		</constant>
+		<constant name="ONE" value="Vector4i(1, 1, 1)">
+		</constant>
+	</constants>
+	<operators>
+		<operator name="operator !=">
+			<return type="bool" />
+			<argument index="0" name="right" type="Vector4i" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator %">
+			<return type="Vector4i" />
+			<argument index="0" name="right" type="Vector4i" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator %">
+			<return type="Vector4i" />
+			<argument index="0" name="right" type="int" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator *">
+			<return type="Vector4i" />
+			<argument index="0" name="right" type="Vector4i" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator *">
+			<return type="Vector4" />
+			<argument index="0" name="right" type="float" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator *">
+			<return type="Vector4i" />
+			<argument index="0" name="right" type="int" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator +">
+			<return type="Vector4i" />
+			<argument index="0" name="right" type="Vector4i" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator -">
+			<return type="Vector4i" />
+			<argument index="0" name="right" type="Vector4i" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator /">
+			<return type="Vector4i" />
+			<argument index="0" name="right" type="Vector4i" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator /">
+			<return type="Vector4" />
+			<argument index="0" name="right" type="float" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator /">
+			<return type="Vector4i" />
+			<argument index="0" name="right" type="int" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator &lt;">
+			<return type="bool" />
+			<argument index="0" name="right" type="Vector4i" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator &lt;=">
+			<return type="bool" />
+			<argument index="0" name="right" type="Vector4i" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator ==">
+			<return type="bool" />
+			<argument index="0" name="right" type="Vector4i" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator &gt;">
+			<return type="bool" />
+			<argument index="0" name="right" type="Vector4i" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator &gt;=">
+			<return type="bool" />
+			<argument index="0" name="right" type="Vector4i" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator unary+">
+			<return type="Vector4i" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator unary-">
+			<return type="Vector4i" />
+			<description>
+			</description>
+		</operator>
+	</operators>
+</class>
diff --git a/doc/classes/float.xml b/doc/classes/float.xml
index f36b1fddeb..a7c6533ef5 100644
--- a/doc/classes/float.xml
+++ b/doc/classes/float.xml
@@ -111,6 +111,18 @@
 			</description>
 		</operator>
 		<operator name="operator *">
+			<return type="Vector4" />
+			<argument index="0" name="right" type="Vector4" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator *">
+			<return type="Vector4" />
+			<argument index="0" name="right" type="Vector4i" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator *">
 			<return type="float" />
 			<argument index="0" name="right" type="float" />
 			<description>
diff --git a/doc/classes/int.xml b/doc/classes/int.xml
index 2eceba40fa..6b492ca923 100644
--- a/doc/classes/int.xml
+++ b/doc/classes/int.xml
@@ -158,6 +158,18 @@
 			</description>
 		</operator>
 		<operator name="operator *">
+			<return type="Vector4" />
+			<argument index="0" name="right" type="Vector4" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator *">
+			<return type="Vector4i" />
+			<argument index="0" name="right" type="Vector4i" />
+			<description>
+			</description>
+		</operator>
+		<operator name="operator *">
 			<return type="float" />
 			<argument index="0" name="right" type="float" />
 			<description>