public void Allocating_vertices_actually_allocates()
{
const int vertexCount = 5;
var context = new GeometryContext();
context.AllocateVertices(vertexCount);
Assert.IsNotNull(context.Vertices);
Assert.AreEqual(vertexCount,context.Vertices.Length);
}
public void Allocating_vertices_actually_allocates()
{
const int vertexCount = 5;
var context = new GeometryContext();
context.AllocateVertices(vertexCount);
Assert.IsNotNull(context.Vertices);
Assert.AreEqual(vertexCount, context.Vertices.Length);
}
private void PrepareVertices()
{
var absX = Width / 2f;
var absY = Height / 2f;
var absZ = Depth / 2f;
GeometryContext.AllocateVertices(8);
GeometryContext.SetVertex(0, new Vertex(-absX, -absY, -absZ));
GeometryContext.SetVertex(1, new Vertex(absX, -absY, -absZ));
GeometryContext.SetVertex(2, new Vertex(-absX, absY, -absZ));
GeometryContext.SetVertex(3, new Vertex(absX, absY, -absZ));
GeometryContext.SetVertex(4, new Vertex(-absX, -absY, absZ));
GeometryContext.SetVertex(5, new Vertex(absX, -absY, absZ));
GeometryContext.SetVertex(6, new Vertex(-absX, absY, absZ));
GeometryContext.SetVertex(7, new Vertex(absX, absY, absZ));
}
private void PrepareFaces()
{
GeometryContext.AllocateFaces(12);
Sides[BoxSide.Front] = new BoxSideDescriptor(
new Face(2, 1, 0),
new Face(1, 2, 3));
Sides[BoxSide.Back] = new BoxSideDescriptor(
new Face(4, 5, 6),
new Face(7, 6, 5));
Sides[BoxSide.Left] = new BoxSideDescriptor(
new Face(0, 4, 6),
new Face(0, 6, 2));
Sides[BoxSide.Right] = new BoxSideDescriptor(
new Face(7, 5, 1),
new Face(3, 7, 1));
Sides[BoxSide.Top] = new BoxSideDescriptor(
new Face(5, 4, 0),
new Face(1, 5, 0));
Sides[BoxSide.Bottom] = new BoxSideDescriptor(
new Face(2, 6, 7),
new Face(2, 7, 3));
var faceIndex = 0;
var enumerator = Sides.Values.GetEnumerator();
while (enumerator.MoveNext())
{
var boxSide = (BoxSideDescriptor)enumerator.Current;
GeometryContext.SetFace(faceIndex, boxSide.Face1);
GeometryContext.SetFace(faceIndex + 1, boxSide.Face2);
faceIndex += 2;
}
}
/// <summary>
/// Parse a SVG path geometry string.
/// </summary>
/// <param name="context">The geometry context.</param>
/// <param name="pathString">The path geometry string</param>
/// <param name="startIndex">The string start index.</param>
public void Parse(GeometryContext context, string pathString, int startIndex)
{
_context = context;
_pathString = pathString;
_pathLength = pathString.Length;
_curIndex = startIndex;
_secondLastPoint = Point2.FromXY(0, 0);
_lastPoint = Point2.FromXY(0, 0);
_lastStart = Point2.FromXY(0, 0);
_figureStarted = false;
bool first = true;
char last_cmd = ' ';
while (ReadToken())
{
char cmd = _token;
if (first)
{
if ((cmd != 'M') && (cmd != 'm'))
{
InvalidToken();
}
first = false;
}
switch (cmd)
{
case 'm':
case 'M':
_lastPoint = ReadPoint(cmd, !_allowComma);
_context.BeginFigure(_lastPoint.AsPointShape(), _isFilled, !_isClosed);
_figureStarted = true;
_lastStart = _lastPoint;
last_cmd = 'M';
while (IsNumber(_allowComma))
{
_lastPoint = ReadPoint(cmd, !_allowComma);
_context.LineTo(_lastPoint.AsPointShape(), _isStroked, !_isSmoothJoin);
last_cmd = 'L';
}
break;
case 'l':
case 'L':
case 'h':
case 'H':
case 'v':
case 'V':
EnsureFigure();
do
{
switch (cmd)
{
case 'l':
_lastPoint = ReadPoint(cmd, !_allowComma);
break;
case 'L':
_lastPoint = ReadPoint(cmd, !_allowComma);
break;
case 'h':
_lastPoint = Point2.FromXY(_lastPoint.X + ReadNumber(!_allowComma), _lastPoint.Y);
break;
case 'H':
_lastPoint = Point2.FromXY(_lastPoint.X + ReadNumber(!_allowComma), _lastPoint.Y);
break;
case 'v':
_lastPoint = Point2.FromXY(_lastPoint.X, _lastPoint.Y + ReadNumber(!_allowComma));
break;
case 'V':
_lastPoint = Point2.FromXY(_lastPoint.X, _lastPoint.Y + ReadNumber(!_allowComma));
break;
}
_context.LineTo(_lastPoint.AsPointShape(), _isStroked, !_isSmoothJoin);
}while (IsNumber(_allowComma));
last_cmd = 'L';
break;
case 'c':
case 'C':
case 's':
case 'S':
EnsureFigure();
do
{
Point2 p;
if ((cmd == 's') || (cmd == 'S'))
{
if (last_cmd == 'C')
{
p = Reflect();
}
else
{
p = _lastPoint;
}
_secondLastPoint = ReadPoint(cmd, !_allowComma);
}
else
{
p = ReadPoint(cmd, !_allowComma);
_secondLastPoint = ReadPoint(cmd, _allowComma);
}
_lastPoint = ReadPoint(cmd, _allowComma);
_context.CubicBezierTo(
p.AsPointShape(),
_secondLastPoint.AsPointShape(),
_lastPoint.AsPointShape(),
_isStroked,
!_isSmoothJoin);
last_cmd = 'C';
}while (IsNumber(_allowComma));
break;
case 'q':
case 'Q':
case 't':
case 'T':
EnsureFigure();
do
{
if ((cmd == 't') || (cmd == 'T'))
{
if (last_cmd == 'Q')
{
_secondLastPoint = Reflect();
}
else
{
_secondLastPoint = _lastPoint;
}
_lastPoint = ReadPoint(cmd, !_allowComma);
}
else
{
_secondLastPoint = ReadPoint(cmd, !_allowComma);
_lastPoint = ReadPoint(cmd, _allowComma);
}
_context.QuadraticBezierTo(
_secondLastPoint.AsPointShape(),
_lastPoint.AsPointShape(),
_isStroked,
!_isSmoothJoin);
last_cmd = 'Q';
}while (IsNumber(_allowComma));
break;
case 'a':
case 'A':
EnsureFigure();
do
{
double w = ReadNumber(!_allowComma);
double h = ReadNumber(_allowComma);
double rotation = ReadNumber(_allowComma);
bool large = ReadBool();
bool sweep = ReadBool();
_lastPoint = ReadPoint(cmd, _allowComma);
_context.ArcTo(
_lastPoint.AsPointShape(),
PathSize.Create(w, h),
rotation,
large,
sweep ? SweepDirection.Clockwise : SweepDirection.Counterclockwise,
_isStroked,
!_isSmoothJoin);
}while (IsNumber(_allowComma));
last_cmd = 'A';
break;
case 'z':
case 'Z':
EnsureFigure();
_context.SetClosedState(_isClosed);
_figureStarted = false;
last_cmd = 'Z';
_lastPoint = _lastStart;
break;
default:
InvalidToken();
break;
}
}
}
