public void using_two_command_types_in_encoding_expect_multiple_commands_decoded()
{
//Encoded as: [ 9 4 4 18 0 16 16 0 ]
// | | ==== relative LineTo(+8, +0) == Line to Point(10, 10)
// | | ==== relative LineTo(+0, +8) == Line to Point(2, 10)
// | `> [00010 010] = command id 2 (LineTo), command count 2
// | === relative MoveTo(+2, +2)
// `> [00001 001] = command id 1 (MoveTo), command count 1
var commandFactory = new DecodingFactory(new uint[] { 9, 4, 4, 18, 0, 16, 16, 0 });
var commands = commandFactory.Process();
Assert.AreEqual(2, commands.Count());
var moveTo = commands.First();
Assert.AreEqual(CommandType.MoveTo, moveTo.Command);
Assert.AreEqual(2, moveTo[0].Value);
Assert.AreEqual(2, moveTo[1].Value);
// Second Parsed Command //
var lineTo = commands.Skip(1).First();
Assert.AreEqual(CommandType.LineTo, lineTo.Command);
Assert.AreEqual(0, lineTo[0].Value);
Assert.AreEqual(8, lineTo[1].Value);
Assert.AreEqual(8, lineTo[2].Value);
Assert.AreEqual(0, lineTo[3].Value);
}
public void command_with_one_point_decode_expect_proper_parsing()
{
//Encoded as: [ 9 50 34 ]
// | | `> Decoded: ((34 >> 1) ^ (-(34 & 1))) = +17
// | `> Decoded: ((50 >> 1) ^ (-(50 & 1))) = +25
// | ===== relative MoveTo(+25, +17) == create point(25,17)
// `> [00001 001] = command id 1 (MoveTo), command count 1
var commandFactory = new DecodingFactory(new uint[] { 9, 50, 34 });
var commands = commandFactory.Process();
Assert.AreEqual(1, commands.Count());
Assert.AreEqual(CommandType.MoveTo, commands.Single().Command);
Assert.AreEqual(25, commands.Single()[0].Value);
Assert.AreEqual(17, commands.Single()[1].Value);
}
public void given_a_complex_multipolygon_expect_proper_decoding()
{
//Encoded as: [ 9 0 0 26 20 0 0 20 19 0 15 9 22 2 26 18 0 0 18 17 0 15 9 4 13 26 0 8 8 0 0 7 15 ]
// | | | | | | | | `> [00001 111] (ClosePath)
// | | | | | | | `> [00011 010] = (LineTo), command count 3
// | | | | | | `> [00001 001] = command id 1 (MoveTo), command count 1
// | | | | | `> [00001 111] (ClosePath)
// | | | | `> [00011 010] = (LineTo), command count 3
// | | | `> [00001 001] = command id 1 (MoveTo), command count 1
// | | `> [00001 111] (ClosePath)
// | `> [00011 010] = (LineTo), command count 3
// `> [00001 001] = command id 1 (MoveTo), command count 1
var commandFactory = new DecodingFactory(new uint[] { 9, 0, 0, 26, 20, 0, 0, 20, 19, 0, 15, 9, 22, 2, 26, 18, 0, 0, 18, 17, 0, 15, 9, 4, 13, 26, 0, 8, 8, 0, 0, 7, 15 });
var commands = commandFactory.Process();
Assert.AreEqual(9, commands.Count());
var first = commands.First();
var second = commands.Skip(1).First();
var third = commands.Skip(2).First();
var fourth = commands.Skip(3).First();
var fifth = commands.Skip(4).First();
var sixth = commands.Skip(5).First();
var seventh = commands.Skip(6).First();
var eighth = commands.Skip(7).First();
var ninth = commands.Skip(8).First();
Assert.AreEqual(CommandType.MoveTo, first.Command);
Assert.AreEqual(CommandType.LineTo, second.Command);
Assert.AreEqual(CommandType.ClosePath, third.Command);
Assert.AreEqual(CommandType.MoveTo, fourth.Command);
Assert.AreEqual(CommandType.LineTo, fifth.Command);
Assert.AreEqual(CommandType.ClosePath, sixth.Command);
Assert.AreEqual(CommandType.MoveTo, seventh.Command);
Assert.AreEqual(CommandType.LineTo, eighth.Command);
Assert.AreEqual(CommandType.ClosePath, ninth.Command);
Assert.AreEqual(2, first.ParameterCount);
Assert.AreEqual(6, second.ParameterCount);
Assert.AreEqual(0, third.ParameterCount);
Assert.AreEqual(2, fourth.ParameterCount);
Assert.AreEqual(6, fifth.ParameterCount);
Assert.AreEqual(0, sixth.ParameterCount);
Assert.AreEqual(2, seventh.ParameterCount);
Assert.AreEqual(6, eighth.ParameterCount);
Assert.AreEqual(0, ninth.ParameterCount);
}
public void using_lineto_with_moveto_inbetween_expect_multiple_commands_decoded()
{
//Encoded as: [ 9 4 4 18 0 16 16 0 9 17 17 10 4 8 ]
// | | | | === relative LineTo(+2, +4) == Line to Point(3,5)
// | | | `> [00001 010] = command id 2 (LineTo), command count 1
// | | | ===== relative MoveTo(-9, -9) == Start new line at(1,1)
// | | `> [00001 001] = command id 1 (MoveTo), command count 1
// | | ==== relative LineTo(+8, +0) == Line to Point(10, 10)
// | | ==== relative LineTo(+0, +8) == Line to Point(2, 10)
// | `> [00010 010] = command id 2 (LineTo), command count 2
// | === relative MoveTo(+2, +2)
// `> [00001 001] = command id 1 (MoveTo), command count 1
var commandFactory = new DecodingFactory(new uint[] { 9, 4, 4, 18, 0, 16, 16, 0, 9, 17, 17, 10, 4, 8 });
var commands = commandFactory.Process();
Assert.AreEqual(4, commands.Count());
var moveTo = commands.First();
Assert.AreEqual(CommandType.MoveTo, moveTo.Command);
Assert.AreEqual(2, moveTo[0].Value);
Assert.AreEqual(2, moveTo[1].Value);
// Second Parsed Command //
var lineTo = commands.Skip(1).First();
Assert.AreEqual(CommandType.LineTo, lineTo.Command);
Assert.AreEqual(0, lineTo[0].Value);
Assert.AreEqual(8, lineTo[1].Value);
Assert.AreEqual(8, lineTo[2].Value);
Assert.AreEqual(0, lineTo[3].Value);
var moveToB = commands.Skip(2).First();
Assert.AreEqual(CommandType.MoveTo, moveTo.Command);
Assert.AreEqual(-9, moveToB[0].Value);
Assert.AreEqual(-9, moveToB[1].Value);
// Second Parsed Command //
var lineToB = commands.Skip(3).First();
Assert.AreEqual(CommandType.LineTo, lineTo.Command);
Assert.AreEqual(2, lineToB[0].Value);
Assert.AreEqual(4, lineToB[1].Value);
}
public void using_multiple_commands_and_params_expect_full_decoding()
{
//Encoded as: [ 17 10 14 3 9 ]
// | | | | `> Decoded: ((9 >> 1) ^ (-(9 & 1))) = -5
// | | | `> Decoded: ((3 >> 1) ^ (-(3 & 1))) = -2
// | | | === relative MoveTo(-2, -5) == create point(3,2)
// | | `> Decoded: ((34 >> 1) ^ (-(34 & 1))) = +7
// | `> Decoded: ((50 >> 1) ^ (-(50 & 1))) = +5
// | ===== relative MoveTo(+5, +7) == create point(5,7)
// `> [00010 001] = command id 1 (MoveTo), command count 2
var commandFactory = new DecodingFactory(new uint[] { 17, 10, 14, 3, 9 });
var commands = commandFactory.Process();
Assert.AreEqual(1, commands.Count());
Assert.AreEqual(CommandType.MoveTo, commands.Single().Command);
Assert.AreEqual(5, commands.Single()[0].Value);
Assert.AreEqual(7, commands.Single()[1].Value);
Assert.AreEqual(-2, commands.Single()[2].Value);
Assert.AreEqual(-5, commands.Single()[3].Value);
}
public void given_a_simple_polygon_expect_proper_decoding()
{
//Encoded as: [ 9 6 12 18 10 12 24 44 15 ]
// | | `> [00001 111] command id 7 (ClosePath), command count 1
// | | ===== relative LineTo(+12, +22) == Line to Point(20, 34)
// | | ===== relative LineTo(+5, +6) == Line to Point(8, 12)
// | `> [00010 010] = command id 2 (LineTo), command count 2
// | ==== relative MoveTo(+3, +6)
// `> [00001 001] = command id 1 (MoveTo), command count 1
var commandFactory = new DecodingFactory(new uint[] { 9, 6, 12, 18, 10, 12, 24, 44, 15 });
var commands = commandFactory.Process();
Assert.AreEqual(3, commands.Count());
var first = commands.First();
var second = commands.Skip(1).First();
var third = commands.Skip(2).First();
Assert.AreEqual(CommandType.MoveTo, first.Command);
Assert.AreEqual(CommandType.LineTo, second.Command);
Assert.AreEqual(CommandType.ClosePath, third.Command);
Assert.AreEqual(2, first.ParameterCount);
Assert.AreEqual(4, second.ParameterCount);
Assert.AreEqual(0, third.ParameterCount);
Assert.AreEqual(3, first[0].Value);
Assert.AreEqual(6, first[1].Value);
Assert.AreEqual(5, second[0].Value);
Assert.AreEqual(6, second[1].Value);
Assert.AreEqual(12, second[2].Value);
Assert.AreEqual(22, second[3].Value);
// Throws an Exception due to the close command having 0 parameters //
//Assert.AreEqual(17, third[0].Value);
}
