Matrix library.

examples/resources/lib/matrix.lua

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+-- For luaJit compatibility.
+if table.unpack == nil then
+	table.unpack = unpack
+end
+
+local function deepCopy( orig )
+    local copy
+
+    if type( orig ) == "table" then
+        copy = {}
+
+        for origKey, origValue in next, orig, nil do
+			-- If object has clone method, use that.
+			copy[ deepCopy( origKey ) ] = deepCopy( origValue )
+        end
+
+        -- setmetatable( copy, utillib.deepCopy( getmetatable( orig ) ) )
+    else -- number, string, boolean, etc.
+        copy = orig
+    end
+
+    return copy
+end
+
+Matrix = {}
+Matrix.meta = {
+	__index = Matrix,
+	__tostring = function( m )
+		return "{\n"
+		.."  { "..m.m[1][1]..", "..m.m[1][2]..", "..m.m[1][3]..", "..m.m[1][4].." },\n"
+		.."  { "..m.m[2][1]..", "..m.m[2][2]..", "..m.m[2][3]..", "..m.m[2][4].." },\n"
+		.."  { "..m.m[3][1]..", "..m.m[3][2]..", "..m.m[3][3]..", "..m.m[3][4].." },\n"
+		.."  { "..m.m[3][1]..", "..m.m[3][2]..", "..m.m[3][3]..", "..m.m[3][4].." },\n"
+		.."}"
+	end,
+	__add = function( m1, m2 )
+		return Matrix:new( RL.MatrixAdd( m1, m2 ) )
+	end,
+	__sub = function( m1, m2 )
+		return Matrix:new( RL.MatrixSubtract( m1, m2 ) )
+	end,
+	__mul = function( m1, m2 )
+		return Matrix:new( RL.MatrixMultiply( m1, m2 ) )
+	end
+}
+
+function Matrix:new( m )
+	local object = setmetatable( {}, Matrix.meta )
+
+	if type( m ) == "table" then
+		object.m = deepCopy( m )
+	else
+		object.m = RL.MatrixIdentity()
+	end
+
+	return object
+end
+
+function Matrix:set( m )
+	if type( m ) == "table" then
+		self.m = deepCopy( m )
+	else
+		self.m = RL.MatrixIdentity()
+	end
+end
+
+-- function Matrix:arr()
+-- 	return self.m
+-- end
+
+-- function Matrix:unpack()
+-- 	return self.m
+-- end
+
+function Matrix:clone()
+	return Matrix:new( self )
+end
+
+function Matrix:determinant()
+	return RL.MatrixDeterminant( self )
+end
+
+function Matrix:trace()
+	return RL.MatrixTranspose( self )
+end
+
+function Matrix:transpose()
+	return Matrix:new( RL.MatrixTranspose( self ) )
+end
+
+function Matrix:multiply( m2 )
+	return Matrix:new( RL.MatrixMultiply( self, m2 ) )
+end
+
+function Matrix:invert()
+	return Matrix:new( RL.MatrixInvert( self ) )
+end
+
+function Matrix:identity()
+	return Matrix:new( RL.MatrixIdentity() )
+end
+
+function Matrix:translate( translate )
+	return Matrix:new( RL.MatrixTranslate( translate ) )
+end
+
+function Matrix:rotate( axis, angle )
+	return Matrix:new( RL.MatrixRotate( axis, angle ) )
+end
+
+function Matrix:rotateX( angle )
+	return Matrix:new( RL.MatrixRotateX( angle ) )
+end
+
+function Matrix:rotateY( angle )
+	return Matrix:new( RL.MatrixRotateY( angle ) )
+end
+
+function Matrix:rotateZ( angle )
+	return Matrix:new( RL.MatrixRotateZ( angle ) )
+end
+
+function Matrix:rotateXYZ( angles )
+	return Matrix:new( RL.MatrixRotateXYZ( angles ) )
+end
+
+function Matrix:rotateZYX( angles )
+	return Matrix:new( RL.MatrixRotateZYX( angles ) )
+end
+
+function Matrix:scale( scale )
+	return Matrix:new( RL.MatrixScale( scale ) )
+end
+
+function Matrix:frustrum( left, right, bottom, top, near, far )
+	return Matrix:new( RL.MatrixFrustum( left, right, bottom, top, near, far ) )
+end
+
+function Matrix:perspective( fovy, aspect, near, far )
+	return Matrix:new( RL.MatrixPerspective( fovy, aspect, near, far ) )
+end
+
+function Matrix:ortho( left, right, bottom, top, near, far )
+	return Matrix:new( RL.MatrixOrtho( left, right, bottom, top, near, far ) )
+end
+
+function Matrix:lookAt( eye, target, up )
+	return Matrix:new( RL.MatrixLookAt( eye, target, up ) )
+end
+
+return Matrix