// Add a random path.
private void CreateRandomPath()
{
var path = new Path3F();
var point = new Vector3F(0, 0, 0);
path.Add(new PathKey3F
{
Interpolation = SplineInterpolation.CatmullRom,
Parameter = 0,
Point = point
});
for (int i = 1; i < 10; i++)
{
point += RandomHelper.Random.NextQuaternionF().Rotate(new Vector3F(0, 0.5f, 0));
path.Add(new PathKey3F
{
Interpolation = SplineInterpolation.CatmullRom,
Parameter = i,
Point = point
});
}
var pathFigure = new PathFigure3F();
pathFigure.Segments.Add(path);
var pathLineNode = new FigureNode(pathFigure)
{
Name = "RandomPath",
PoseLocal = new Pose(new Vector3F(4, 1, 2)),
StrokeThickness = 3,
StrokeColor = new Vector3F(0.5f, 0.3f, 1),
StrokeAlpha = 1f,
DashInWorldSpace = true,
StrokeDashPattern = new Vector4F(10, 1, 1, 1) / 100,
};
_scene.Children.Add(pathLineNode);
}
private static void CacheVertexBuffer(FigureNode node, GraphicsDevice graphicsDevice)
{
var figureRenderData = node.Figure.RenderData;
var nodeRenderData = (FigureNodeRenderData)node.RenderData;
Vector3[] positions = figureRenderData.Vertices.Array;
var fillIndices = figureRenderData.FillIndices;
if (fillIndices != null
&& fillIndices.Count > 0
&& !Numeric.IsZero(node.FillAlpha))
{
// This code is similar to the code in Fill().
Matrix world = node.PoseWorld * Matrix.CreateScale(node.ScaleWorld);
Vector3 color3F = node.FillColor * node.FillAlpha;
Color color = new Color(color3F.X, color3F.Y, color3F.Z, node.FillAlpha);
int numberOfVertices = figureRenderData.Vertices.Count;
int numberOfIndices = figureRenderData.FillIndices.Count;
VertexPositionColor[] vertices = new VertexPositionColor[numberOfVertices];
// Copy all vertices.
for (int i = 0; i < numberOfVertices; i++)
{
vertices[i].Position = (Vector3)world.TransformPosition(positions[i]);
vertices[i].Color = color;
}
nodeRenderData.FillVertexBuffer = new VertexBuffer(
graphicsDevice,
VertexPositionColor.VertexDeclaration,
numberOfVertices,
BufferUsage.WriteOnly);
nodeRenderData.FillVertexBuffer.SetData(vertices);
if (numberOfVertices <= ushort.MaxValue)
{
// Copy all indices from int[] to ushort[].
int[] int32Indices = figureRenderData.FillIndices.Array;
ushort[] indices = new ushort[numberOfIndices];
for (int i = 0; i < numberOfIndices; i++)
indices[i] = (ushort)int32Indices[i];
nodeRenderData.FillIndexBuffer = new IndexBuffer(
graphicsDevice,
IndexElementSize.SixteenBits,
numberOfIndices,
BufferUsage.WriteOnly);
nodeRenderData.FillIndexBuffer.SetData(indices);
}
else
{
nodeRenderData.FillIndexBuffer = new IndexBuffer(
graphicsDevice,
IndexElementSize.ThirtyTwoBits,
numberOfIndices,
BufferUsage.WriteOnly);
// Note: The FillIndices.Array may contain more than numberOfIndices entries! -->
// Specify number of indices explicitly!
nodeRenderData.FillIndexBuffer.SetData(figureRenderData.FillIndices.Array, 0, numberOfIndices);
}
}
var strokeIndices = figureRenderData.StrokeIndices;
if (strokeIndices != null
&& strokeIndices.Count > 0
&& !Numeric.IsZero(node.StrokeThickness)
&& !Numeric.IsZero(node.StrokeAlpha))
{
// This code is similar to the code in Stroke() and in the ctor.
Matrix world = node.PoseWorld * Matrix.CreateScale(node.ScaleWorld);
float thickness = node.StrokeThickness;
Vector3 color3F = node.StrokeColor * node.StrokeAlpha;
HalfVector4 color = new HalfVector4(color3F.X, color3F.Y, color3F.Z, node.StrokeAlpha);
Vector4 dash = node.StrokeDashPattern * node.StrokeThickness;
bool usesDashPattern = (dash.Y + dash.Z) != 0;
HalfVector4 dashSum = new HalfVector4(
dash.X,
dash.X + dash.Y,
dash.X + dash.Y + dash.Z,
dash.X + dash.Y + dash.Z + dash.W);
// Convert to vertices.
float lastDistance = 0;
Vector3 lastPosition = new Vector3(float.NaN);
Vector3 lastWorld = new Vector3();
HalfVector4 data0 = new HalfVector4(0, 1, thickness, 0);
HalfVector4 data1 = new HalfVector4(0, 0, thickness, 0);
HalfVector4 data2 = new HalfVector4(1, 0, thickness, 0);
HalfVector4 data3 = new HalfVector4(1, 1, thickness, 0);
int[] figureIndices = strokeIndices.Array;
int numberOfLineSegments = strokeIndices.Count / 2;
int numberOfVertices = numberOfLineSegments * 4;
StrokeVertex[] vertices = new StrokeVertex[numberOfVertices];
for (int i = 0; i < numberOfLineSegments; i++)
{
int startIndex = figureIndices[i * 2 + 0];
int endIndex = figureIndices[i * 2 + 1];
Vector3 start = positions[startIndex];
Vector3 end = positions[endIndex];
bool notConnectedWithLast = start != lastPosition;
lastPosition = end;
Vector3 startWorld = notConnectedWithLast ? world.TransformPosition(start) : lastWorld;
Vector3 endWorld = world.TransformPosition(end);
lastWorld = endWorld;
// Compute start/end distances of lines from beginning of line strip
// for dash patterns.
float startDistance = 0;
float endDistance = 1;
if (usesDashPattern)
{
Debug.Assert(node.DashInWorldSpace, "Cannot cache vertex buffer for figure with screen-space dash patterns.");
if (notConnectedWithLast)
lastDistance = 0;
startDistance = lastDistance;
endDistance = startDistance + (endWorld - startWorld).Length;
lastDistance = endDistance;
// The shader needs to know that DashInWorldSpace is true. To avoid
// effect parameter changes, we store the value in the sign of the distance!
startDistance = -startDistance;
endDistance = -endDistance;
}
Vector4 s = new Vector4(startWorld.X, startWorld.Y, startWorld.Z, startDistance);
Vector4 e = new Vector4(endWorld.X, endWorld.Y, endWorld.Z, endDistance);
vertices[i * 4 + 0].Start = s;
vertices[i * 4 + 0].End = e;
vertices[i * 4 + 0].Data = data0;
vertices[i * 4 + 0].Color = color;
vertices[i * 4 + 0].Dash = dashSum;
vertices[i * 4 + 1].Start = s;
vertices[i * 4 + 1].End = e;
vertices[i * 4 + 1].Data = data1;
vertices[i * 4 + 1].Color = color;
vertices[i * 4 + 1].Dash = dashSum;
vertices[i * 4 + 2].Start = s;
vertices[i * 4 + 2].End = e;
vertices[i * 4 + 2].Data = data2;
vertices[i * 4 + 2].Color = color;
vertices[i * 4 + 2].Dash = dashSum;
vertices[i * 4 + 3].Start = s;
vertices[i * 4 + 3].End = e;
vertices[i * 4 + 3].Data = data3;
vertices[i * 4 + 3].Color = color;
vertices[i * 4 + 3].Dash = dashSum;
}
nodeRenderData.StrokeVertexBuffer = new VertexBuffer(
graphicsDevice,
StrokeVertex.VertexDeclaration,
vertices.Length,
BufferUsage.WriteOnly);
nodeRenderData.StrokeVertexBuffer.SetData(vertices);
// Create stroke indices.
int numberOfIndices = numberOfLineSegments * 6;
if (numberOfVertices <= ushort.MaxValue)
{
ushort[] indices = new ushort[numberOfIndices];
for (int i = 0; i < numberOfLineSegments; i++)
{
// Create index buffer for quad (= two triangles, clockwise).
// 1--2
// | /|
// |/ |
// 0--3
indices[i * 6 + 0] = (ushort)(i * 4 + 0);
indices[i * 6 + 1] = (ushort)(i * 4 + 1);
indices[i * 6 + 2] = (ushort)(i * 4 + 2);
indices[i * 6 + 3] = (ushort)(i * 4 + 0);
indices[i * 6 + 4] = (ushort)(i * 4 + 2);
indices[i * 6 + 5] = (ushort)(i * 4 + 3);
}
nodeRenderData.StrokeIndexBuffer = new IndexBuffer(
graphicsDevice,
IndexElementSize.SixteenBits,
numberOfIndices,
BufferUsage.WriteOnly);
nodeRenderData.StrokeIndexBuffer.SetData(indices);
}
else
{
int[] indices = new int[numberOfIndices];
for (int i = 0; i < numberOfLineSegments; i++)
{
// Create index buffer for quad (= two triangles, clockwise).
// 1--2
// | /|
// |/ |
// 0--3
indices[i * 6 + 0] = i * 4 + 0;
indices[i * 6 + 1] = i * 4 + 1;
indices[i * 6 + 2] = i * 4 + 2;
indices[i * 6 + 3] = i * 4 + 0;
indices[i * 6 + 4] = i * 4 + 2;
indices[i * 6 + 5] = i * 4 + 3;
}
nodeRenderData.StrokeIndexBuffer = new IndexBuffer(
graphicsDevice,
IndexElementSize.ThirtyTwoBits,
numberOfIndices,
BufferUsage.WriteOnly);
nodeRenderData.StrokeIndexBuffer.SetData(indices);
}
}
nodeRenderData.IsValid = true;
}
private void Stroke(FigureNode node, ArrayList<Vector3> strokeVertices, ArrayList<int> strokeIndices)
{
if (_mode != RenderMode.Stroke)
{
Flush();
_strokeEffect.CurrentTechnique.Passes[0].Apply();
_mode = RenderMode.Stroke;
}
// Use cached vertex buffer if available.
var nodeRenderData = node.RenderData as FigureNodeRenderData;
if (nodeRenderData != null && nodeRenderData.IsValid)
{
Flush();
var graphicsDevice = _graphicsService.GraphicsDevice;
graphicsDevice.SetVertexBuffer(nodeRenderData.StrokeVertexBuffer);
graphicsDevice.Indices = nodeRenderData.StrokeIndexBuffer;
int primitiveCount = nodeRenderData.StrokeIndexBuffer.IndexCount / 3;
graphicsDevice.DrawIndexedPrimitives(PrimitiveType.TriangleList, 0, 0, primitiveCount);
#else
int vertexCount = nodeRenderData.StrokeVertexBuffer.VertexCount;
graphicsDevice.DrawIndexedPrimitives(PrimitiveType.TriangleList, 0, 0, vertexCount, 0, primitiveCount);
return;
}
var batchVertices = _strokeBatch.Vertices;
var world = node.PoseWorld * Matrix.CreateScale(node.ScaleWorld);
var worldView = _view * world;
var thickness = node.StrokeThickness;
var color3F = node.StrokeColor * node.StrokeAlpha;
var color = new HalfVector4(color3F.X, color3F.Y, color3F.Z, node.StrokeAlpha);
var dash = node.StrokeDashPattern * node.StrokeThickness;
bool usesDashPattern = (dash.Y + dash.Z) != 0;
var dashSum = new HalfVector4(
dash.X,
dash.X + dash.Y,
dash.X + dash.Y + dash.Z,
dash.X + dash.Y + dash.Z + dash.W);
// Convert to vertices.
float lastDistance = 0;
Vector3 lastPosition = new Vector3(float.NaN);
Vector3 lastWorld = new Vector3();
Vector3 lastView = new Vector3();
Vector3 lastProjected = new Vector3();
var data0 = new HalfVector4(0, 1, thickness, 0);
var data1 = new HalfVector4(0, 0, thickness, 0);
var data2 = new HalfVector4(1, 0, thickness, 0);
var data3 = new HalfVector4(1, 1, thickness, 0);
Vector3[] figurePoints = strokeVertices.Array;
int[] figureIndices = strokeIndices.Array;
int numberOfLineSegments = strokeIndices.Count / 2;
for (int i = 0; i < numberOfLineSegments; i++)
{
var startIndex = figureIndices[i * 2 + 0];
var endIndex = figureIndices[i * 2 + 1];
var start = figurePoints[startIndex];
var end = figurePoints[endIndex];
var notConnectedWithLast = start != lastPosition;
lastPosition = end;
Vector3 startWorld = notConnectedWithLast ? world.TransformPosition(start) : lastWorld;
Vector3 endWorld = world.TransformPosition(end);
lastWorld = endWorld;
// Compute start/end distances of lines from beginning of line strip
// for dash patterns.
float startDistance = 0;
float endDistance = 1;
if (usesDashPattern)
{
if (!node.DashInWorldSpace)
{
Vector3 startView = notConnectedWithLast ? worldView.TransformPosition(start) : lastView;
var endView = worldView.TransformPosition(end);
lastView = endView;
// Clip to near plane - otherwise lines which end near the camera origin
// (where planar z == 0) will disappear. (Projection singularity!)
float deltaZ = Math.Abs(startView.Z - endView.Z);
float pStart = MathHelper.Clamp((startView.Z - (-_cameraNear)) / deltaZ, 0, 1);
startView = InterpolationHelper.Lerp(startView, endView, pStart);
float pEnd = MathHelper.Clamp((endView.Z - (-_cameraNear)) / deltaZ, 0, 1);
endView = InterpolationHelper.Lerp(endView, startView, pEnd);
Vector3 startProjected;
if (notConnectedWithLast)
{
lastDistance = 0;
startProjected = _viewport.ProjectToViewport(startView, _projection);
}
else
{
startProjected = lastProjected;
}
var endProjected = _viewport.ProjectToViewport(endView, _projection);
lastProjected = endProjected;
startDistance = lastDistance;
endDistance = startDistance + (endProjected - startProjected).Length;
lastDistance = endDistance;
}
else
{
if (notConnectedWithLast)
lastDistance = 0;
startDistance = lastDistance;
endDistance = startDistance + (endWorld - startWorld).Length;
lastDistance = endDistance;
// The shader needs to know that DashInWorldSpace is true. To avoid
// effect parameter changes, we store the value in the sign of the distance!
startDistance = -startDistance;
endDistance = -endDistance;
}
}
var s = new Vector4(startWorld.X, startWorld.Y, startWorld.Z, startDistance);
var e = new Vector4(endWorld.X, endWorld.Y, endWorld.Z, endDistance);
int index, dummy;
_strokeBatch.Submit(PrimitiveType.TriangleList, 4, 6, out index, out dummy);
batchVertices[index + 0].Start = s;
batchVertices[index + 0].End = e;
batchVertices[index + 0].Data = data0;
batchVertices[index + 0].Color = color;
batchVertices[index + 0].Dash = dashSum;
batchVertices[index + 1].Start = s;
batchVertices[index + 1].End = e;
batchVertices[index + 1].Data = data1;
batchVertices[index + 1].Color = color;
batchVertices[index + 1].Dash = dashSum;
batchVertices[index + 2].Start = s;
batchVertices[index + 2].End = e;
batchVertices[index + 2].Data = data2;
batchVertices[index + 2].Color = color;
batchVertices[index + 2].Dash = dashSum;
batchVertices[index + 3].Start = s;
batchVertices[index + 3].End = e;
batchVertices[index + 3].Data = data3;
batchVertices[index + 3].Color = color;
batchVertices[index + 3].Dash = dashSum;
}
}
private void Fill(FigureNode node, ArrayList<Vector3> vertices, ArrayList<int> indices)
{
if (_mode != RenderMode.Fill)
{
Flush();
_fillEffect.CurrentTechnique.Passes[0].Apply();
_mode = RenderMode.Fill;
}
// Use cached vertex buffer if available.
var nodeRenderData = node.RenderData as FigureNodeRenderData;
if (nodeRenderData != null && nodeRenderData.IsValid)
{
Flush();
var graphicsDevice = _graphicsService.GraphicsDevice;
graphicsDevice.SetVertexBuffer(nodeRenderData.FillVertexBuffer);
graphicsDevice.Indices = nodeRenderData.FillIndexBuffer;
int primitiveCount = nodeRenderData.FillIndexBuffer.IndexCount / 3;
graphicsDevice.DrawIndexedPrimitives(PrimitiveType.TriangleList, 0, 0, primitiveCount);
#else
int vertexCount = nodeRenderData.FillVertexBuffer.VertexCount;
graphicsDevice.DrawIndexedPrimitives(PrimitiveType.TriangleList, 0, 0, vertexCount, 0, primitiveCount);
return;
}
Matrix world = node.PoseWorld * Matrix.CreateScale(node.ScaleWorld);
Vector3 color3F = node.FillColor * node.FillAlpha;
Color color = new Color(color3F.X, color3F.Y, color3F.Z, node.FillAlpha);
var numberOfVertices = vertices.Count;
var numberOfIndices = indices.Count;
VertexPositionColor[] batchVertices = _fillBatch.Vertices;
ushort[] batchIndices = _fillBatch.Indices;
if (numberOfVertices > batchVertices.Length || numberOfIndices > batchIndices.Length)
{
string message = string.Format(
CultureInfo.InvariantCulture,
"The BufferSize of this FigureRenderer is not large enough to render the FigureNode (Name = \"{0}\").",
node.Name);
throw new GraphicsException(message);
}
int vertexBufferStartIndex, indexBufferStartIndex;
_fillBatch.Submit(PrimitiveType.TriangleList, numberOfVertices, numberOfIndices,
out vertexBufferStartIndex, out indexBufferStartIndex);
// Copy all vertices.
Vector3[] vertexArray = vertices.Array;
for (int i = 0; i < numberOfVertices; i++)
{
batchVertices[vertexBufferStartIndex + i].Position = (Vector3)(world.TransformPosition(vertexArray[i]));
batchVertices[vertexBufferStartIndex + i].Color = color;
}
// Copy all indices.
int[] indexArray = indices.Array;
for (int i = 0; i < numberOfIndices; i++)
{
batchIndices[indexBufferStartIndex + i] = (ushort)(vertexBufferStartIndex + indexArray[i]);
}
}
private void CreateGate()
{
// not gate
var trianglePath = new Path2F
{
new PathKey2F
{
Parameter = 0,
Interpolation = SplineInterpolation.Linear,
Point = new Vector2F(1, 0),
},
new PathKey2F
{
Parameter = 1,
Interpolation = SplineInterpolation.Linear,
Point = new Vector2F(-0.25f, 0.5f),
},
new PathKey2F
{
Parameter = 2,
Interpolation = SplineInterpolation.Linear,
Point = new Vector2F(-0.25f, -0.5f),
},
new PathKey2F
{
Parameter = 3,
Interpolation = SplineInterpolation.Linear,
Point = new Vector2F(1, 0),
}
};
var triangle = new PathFigure2F();
triangle.Segments.Add(trianglePath);
var outPinFigure = new PathFigure2F
{
Segments =
{
new LineSegment2F()
{
Point1 = new Vector2F(1, 0), Point2 = new Vector2F(1.2f, 0)
}
}
};
// Add figure to the scene.
var notGateNode = new FigureNode(triangle)
{
Name = "Not Gate",
StrokeThickness = 2,
StrokeColor = new Vector3F(1, 0.2f, 0.2f),
FillColor = new Vector3F(1, 0.5f, 0.5f),
FillAlpha = 0.5f,
PoseLocal = new Pose(new Vector3F(0, 0, 0)),
ScaleLocal = new Vector3F(1),
Children = new SceneNodeCollection(3),
};
var pinFigure = new PathFigure2F
{
Segments =
{
new LineSegment2F {
Point1 = new Vector2F(0, 0), Point2 = new Vector2F(0.2f, 0)
}
}
};
var pinsFigure = new CompositeFigure();
var output = new TransformedFigure(pinFigure)
{
Pose = new Pose(new Vector3F(1.0f, 0, 0))
};
pinsFigure.Children.Add(output);
var ina = new TransformedFigure(pinFigure)
{
Pose = new Pose(new Vector3F(-0.25f - 0.2f, -0.25f, 0))
};
pinsFigure.Children.Add(ina);
var inb = new TransformedFigure(pinFigure)
{
Pose = new Pose(new Vector3F(-0.25f - 0.2f, 0.25f, 0))
};
pinsFigure.Children.Add(inb);
notGateNode.Children.Add(new FigureNode(pinsFigure)
{
Name = "Pins",
StrokeThickness = 2,
StrokeColor = new Vector3F(0, 0, 0),
PoseLocal = new Pose(new Vector3F(0, 0, 0)),
ScaleLocal = new Vector3F(1f),
});
Scene.Children.Add(notGateNode);
}
// TODO(matt) - grid creation needs to be able to be customized and should also be to a specific scale
// TODO(matt) - should also have an intuitive control panel with presets and real time feedback
// Add a grid with thick major grid lines and thin stroked minor grid lines.
private void CreateGrid()
{
var majorGridLines = new PathFigure2F();
for (int i = 0; i <= 100; i++)
{
majorGridLines.Segments.Add(new LineSegment2F
{
Point1 = new Vector2F(-50, -50 + i),
Point2 = new Vector2F(50, -50 + i),
});
majorGridLines.Segments.Add(new LineSegment2F
{
Point1 = new Vector2F(-50 + i, -50),
Point2 = new Vector2F(-50 + i, 50),
});
}
var minorGridLines = new PathFigure2F();
for (int i = 0; i < 100; i++)
{
minorGridLines.Segments.Add(new LineSegment2F
{
Point1 = new Vector2F(-50, -40.5f + i),
Point2 = new Vector2F(50, -40.5f + i),
});
minorGridLines.Segments.Add(new LineSegment2F
{
Point1 = new Vector2F(-40.5f + i, -50),
Point2 = new Vector2F(-40.5f + i, 50),
});
}
var majorLinesNode = new FigureNode(majorGridLines)
{
Name = "Major grid lines",
PoseLocal = Pose.Identity,
StrokeThickness = 1,
StrokeColor = new Vector3F(0.1f),
StrokeAlpha = 1f,
};
var minorLinesNode = new FigureNode(minorGridLines)
{
Name = "Minor grid lines",
PoseLocal = Pose.Identity,
StrokeThickness = 0.5f,
StrokeColor = new Vector3F(0.1f),
StrokeAlpha = 1f,
//DashInWorldSpace = true,
//StrokeDashPattern = new Vector4F(10, 4, 0, 0) / 200,
};
var gridNode = new SceneNode
{
Name = "Grid",
Children = new SceneNodeCollection(),
PoseLocal = new Pose(new Vector3F(0, -0.5f, 0)),
};
gridNode.Children.Add(majorLinesNode);
gridNode.Children.Add(minorLinesNode);
Scene.Children.Add(gridNode);
}
// Add some rectangles.
private void CreateRectangles()
{
Figure figure = new RectangleFigure
{
IsFilled = false,
WidthX = 1f,
WidthY = 0.5f,
};
FigureNode figureNode = new FigureNode(figure)
{
Name = "Rectangle #1",
StrokeThickness = 1,
StrokeColor = new Vector3F(0.7f, 0.3f, 0.5f),
StrokeAlpha = 1,
PoseLocal = new Pose(new Vector3F(-2, 1, 0))
};
_scene.Children.Add(figureNode);
figure = new RectangleFigure
{
IsFilled = false,
WidthX = 0.5f,
WidthY = 0.8f,
};
figureNode = new FigureNode(figure)
{
Name = "Rectangle #2",
StrokeThickness = 3,
StrokeColor = new Vector3F(0.2f, 0.3f, 0.3f),
StrokeAlpha = 0.5f,
StrokeDashPattern = new Vector4F(10, 2, 3, 2),
DashInWorldSpace = false,
PoseLocal = new Pose(new Vector3F(-1, 1, 0))
};
_scene.Children.Add(figureNode);
figure = new RectangleFigure
{
IsFilled = true,
WidthX = 0.6f,
WidthY = 0.7f,
};
figureNode = new FigureNode(figure)
{
Name = "Rectangle #3",
StrokeThickness = 2,
StrokeColor = new Vector3F(0.3f, 0, 0.2f),
StrokeAlpha = 1,
StrokeDashPattern = new Vector4F(10, 2, 3, 2) / 100,
DashInWorldSpace = true,
FillColor = new Vector3F(0.7f, 0, 0.5f),
FillAlpha = 0.5f,
PoseLocal = new Pose(new Vector3F(-0, 1, 0))
};
_scene.Children.Add(figureNode);
figure = new RectangleFigure
{
IsFilled = true,
WidthX = 1f,
WidthY = 0.2f,
};
figureNode = new FigureNode(figure)
{
Name = "Rectangle #4",
StrokeThickness = 2,
StrokeColor = new Vector3F(0, 0, 0),
StrokeAlpha = 1,
StrokeDashPattern = new Vector4F(1, 1, 1, 1) / 100,
DashInWorldSpace = true,
FillColor = new Vector3F(0.3f, 0.3f, 0.3f),
FillAlpha = 0.5f,
PoseLocal = new Pose(new Vector3F(1, 1, 0))
};
_scene.Children.Add(figureNode);
figure = new RectangleFigure
{
IsFilled = true,
WidthX = 0.4f,
WidthY = 0.5f,
};
figureNode = new FigureNode(figure)
{
Name = "Rectangle #5",
StrokeThickness = 2,
StrokeColor = new Vector3F(0.3f),
StrokeAlpha = 1,
FillColor = new Vector3F(0.3f),
FillAlpha = 1,
PoseLocal = new Pose(new Vector3F(2, 1, 0))
};
_scene.Children.Add(figureNode);
}
// Add a flower shape.
private void CreateFlower()
{
// Define single flower petal.
var petalPath = new Path2F
{
new PathKey2F
{
Parameter = 0,
Interpolation = SplineInterpolation.Bezier,
Point = new Vector2F(0, 0),
TangentIn = new Vector2F(0, 0),
TangentOut = new Vector2F(-0.2f, 0.2f)
},
new PathKey2F
{
Parameter = 1,
Interpolation = SplineInterpolation.Bezier,
Point = new Vector2F(0, 1),
TangentIn = new Vector2F(-0.3f, 1.1f),
TangentOut = new Vector2F(0.3f, 1.1f)
},
new PathKey2F
{
Parameter = 2,
Interpolation = SplineInterpolation.Bezier,
Point = new Vector2F(0, 0),
TangentIn = new Vector2F(0.2f, 0.2f),
TangentOut = new Vector2F(0, 0)
}
};
var petal = new PathFigure2F();
petal.Segments.Add(petalPath);
// Duplicate and rotate flower petal several times.
const int numberOfPetals = 9;
var flower = new CompositeFigure();
flower.Children.Add(petal);
for (int i = 1; i < numberOfPetals; i++)
{
var transformedPetal = new TransformedFigure(petal)
{
Pose = new Pose(Matrix33F.CreateRotationZ(i * ConstantsF.TwoPi / numberOfPetals))
};
flower.Children.Add(transformedPetal);
}
var flowerNode = new FigureNode(flower)
{
Name = "Flower",
StrokeThickness = 2,
StrokeColor = new Vector3F(1, 0.2f, 0.2f),
FillColor = new Vector3F(1, 0.5f, 0.5f),
FillAlpha = 1,
PoseLocal = new Pose(new Vector3F(3, 1, 0)),
ScaleLocal = new Vector3F(0.5f)
};
_scene.Children.Add(flowerNode);
}
// Add a 3D coordinate cross.
private void CreateGizmo(SpriteFont spriteFont)
{
var gizmoNode = new SceneNode
{
Name = "Gizmo",
Children = new SceneNodeCollection(),
PoseLocal = new Pose(new Vector3F(3, 2, 0)),
ScaleLocal = new Vector3F(0.5f)
};
// Red arrow
var arrow = new PathFigure2F();
arrow.Segments.Add(new LineSegment2F {
Point1 = new Vector2F(0, 0), Point2 = new Vector2F(1, 0)
});
arrow.Segments.Add(new LineSegment2F {
Point1 = new Vector2F(1, 0), Point2 = new Vector2F(0.9f, 0.02f)
});
arrow.Segments.Add(new LineSegment2F {
Point1 = new Vector2F(1, 0), Point2 = new Vector2F(0.9f, -0.02f)
});
var figureNode = new FigureNode(arrow)
{
Name = "Gizmo X",
StrokeThickness = 2,
StrokeColor = new Vector3F(1, 0, 0),
PoseLocal = new Pose(new Vector3F(0, 0, 0))
};
gizmoNode.Children.Add(figureNode);
// Green arrow
var transformedArrow = new TransformedFigure(arrow)
{
Pose = new Pose(Matrix33F.CreateRotationZ(MathHelper.ToRadians(90)))
};
figureNode = new FigureNode(transformedArrow)
{
Name = "Gizmo Y",
StrokeThickness = 2,
StrokeColor = new Vector3F(0, 1, 0),
PoseLocal = new Pose(new Vector3F(0, 0, 0))
};
gizmoNode.Children.Add(figureNode);
// Blue arrow
transformedArrow = new TransformedFigure(arrow)
{
Pose = new Pose(Matrix33F.CreateRotationY(MathHelper.ToRadians(-90)))
};
figureNode = new FigureNode(transformedArrow)
{
Name = "Gizmo Z",
StrokeThickness = 2,
StrokeColor = new Vector3F(0, 0, 1),
PoseLocal = new Pose(new Vector3F(0, 0, 0))
};
gizmoNode.Children.Add(figureNode);
// Red arc
var arc = new PathFigure2F();
arc.Segments.Add(
new StrokedSegment2F(
new LineSegment2F {
Point1 = new Vector2F(0, 0), Point2 = new Vector2F(1, 0),
},
false));
arc.Segments.Add(
new ArcSegment2F
{
Point1 = new Vector2F(1, 0),
Point2 = new Vector2F(0, 1),
Radius = new Vector2F(1, 1)
});
arc.Segments.Add(
new StrokedSegment2F(
new LineSegment2F {
Point1 = new Vector2F(0, 1), Point2 = new Vector2F(0, 0),
},
false));
var transformedArc = new TransformedFigure(arc)
{
Scale = new Vector3F(0.333f),
Pose = new Pose(Matrix33F.CreateRotationY(MathHelper.ToRadians(-90)))
};
figureNode = new FigureNode(transformedArc)
{
Name = "Gizmo YZ",
StrokeThickness = 2,
StrokeColor = new Vector3F(1, 0, 0),
FillColor = new Vector3F(1, 0, 0),
FillAlpha = 0.5f,
PoseLocal = new Pose(new Vector3F(0, 0, 0))
};
gizmoNode.Children.Add(figureNode);
// Green arc
transformedArc = new TransformedFigure(arc)
{
Scale = new Vector3F(0.333f),
Pose = new Pose(Matrix33F.CreateRotationX(MathHelper.ToRadians(90)))
};
figureNode = new FigureNode(transformedArc)
{
Name = "Gizmo XZ",
StrokeThickness = 2,
StrokeColor = new Vector3F(0, 1, 0),
FillColor = new Vector3F(0, 1, 0),
FillAlpha = 0.5f,
PoseLocal = new Pose(new Vector3F(0, 0, 0))
};
gizmoNode.Children.Add(figureNode);
// Blue arc
transformedArc = new TransformedFigure(arc)
{
Scale = new Vector3F(0.333f),
};
figureNode = new FigureNode(transformedArc)
{
Name = "Gizmo XY",
StrokeThickness = 2,
StrokeColor = new Vector3F(0, 0, 1),
FillColor = new Vector3F(0, 0, 1),
FillAlpha = 0.5f,
PoseLocal = new Pose(new Vector3F(0, 0, 0))
};
gizmoNode.Children.Add(figureNode);
// Labels "X", "Y", "Z"
var spriteNode = new SpriteNode(new TextSprite("X", spriteFont))
{
Color = new Vector3F(1, 0, 0),
Origin = new Vector2F(0, 1),
PoseLocal = new Pose(new Vector3F(1, 0, 0))
};
gizmoNode.Children.Add(spriteNode);
spriteNode = new SpriteNode(new TextSprite("Y", spriteFont))
{
Color = new Vector3F(0, 1, 0),
Origin = new Vector2F(0, 1),
PoseLocal = new Pose(new Vector3F(0, 1, 0))
};
gizmoNode.Children.Add(spriteNode);
spriteNode = new SpriteNode(new TextSprite("Z", spriteFont))
{
Color = new Vector3F(0, 0, 1),
Origin = new Vector2F(0, 1),
PoseLocal = new Pose(new Vector3F(0, 0, 1))
};
gizmoNode.Children.Add(spriteNode);
_scene.Children.Add(gizmoNode);
}
// Add some transparent figures to test alpha blending.
private void CreateAlphaBlendedFigures()
{
var rectangle = new RectangleFigure
{
IsFilled = true,
WidthX = 0.5f,
WidthY = 0.9f,
};
var figureNode = new FigureNode(rectangle)
{
Name = "Rectangle #6",
StrokeThickness = 2,
StrokeColor = new Vector3F(0.1f, 0.2f, 0.3f),
FillColor = new Vector3F(0.1f, 0.2f, 0.3f),
StrokeAlpha = 0.5f,
FillAlpha = 0.5f,
PoseLocal = new Pose(new Vector3F(-4, 1, -2))
};
_scene.Children.Add(figureNode);
figureNode = new FigureNode(rectangle)
{
Name = "Rectangle #7",
StrokeThickness = 2,
StrokeColor = new Vector3F(0.1f, 0.2f, 0.3f),
FillColor = new Vector3F(0.1f, 0.2f, 0.3f),
StrokeAlpha = 0.5f,
FillAlpha = 0.5f,
PoseLocal = new Pose(new Vector3F(-4, 1, -1))
};
_scene.Children.Add(figureNode);
figureNode = new FigureNode(rectangle)
{
Name = "Rectangle #8",
StrokeThickness = 2,
StrokeColor = new Vector3F(0.1f, 0.2f, 0.3f),
FillColor = new Vector3F(0.1f, 0.2f, 0.3f),
StrokeAlpha = 0.5f,
FillAlpha = 0.5f,
PoseLocal = new Pose(new Vector3F(-4, 1, 0))
};
_scene.Children.Add(figureNode);
figureNode = new FigureNode(rectangle)
{
Name = "Rectangle #9",
StrokeThickness = 2,
StrokeColor = new Vector3F(0.1f, 0.2f, 0.3f),
FillColor = new Vector3F(0.1f, 0.2f, 0.3f),
StrokeAlpha = 0.5f,
FillAlpha = 0.5f,
PoseLocal = new Pose(new Vector3F(-4, 1, 1))
};
_scene.Children.Add(figureNode);
figureNode = new FigureNode(rectangle)
{
Name = "Rectangle #10",
StrokeThickness = 2,
StrokeColor = new Vector3F(0.1f, 0.2f, 0.3f),
FillColor = new Vector3F(0.1f, 0.2f, 0.3f),
StrokeAlpha = 0.5f,
FillAlpha = 0.5f,
PoseLocal = new Pose(new Vector3F(-4, 1, 2))
};
_scene.Children.Add(figureNode);
}
// Add some ellipses.
private void CreateEllipses()
{
Figure figure = new EllipseFigure
{
IsFilled = false,
RadiusX = 0.5f,
RadiusY = 0.25f,
};
FigureNode figureNode = new FigureNode(figure)
{
Name = "Ellipse #1",
StrokeThickness = 1,
StrokeColor = new Vector3(0.7f, 0.3f, 0.5f),
StrokeAlpha = 1,
PoseLocal = new Pose(new Vector3(-2, 2, 0))
};
_scene.Children.Add(figureNode);
figure = new EllipseFigure
{
IsFilled = false,
RadiusX = 0.25f,
RadiusY = 0.4f,
};
figureNode = new FigureNode(figure)
{
Name = "Ellipse #2",
StrokeThickness = 3,
StrokeColor = new Vector3(0.2f, 0.3f, 0.3f),
StrokeAlpha = 0.5f,
StrokeDashPattern = new Vector4(10, 2, 3, 2),
DashInWorldSpace = false,
PoseLocal = new Pose(new Vector3(-1, 2, 0))
};
_scene.Children.Add(figureNode);
figure = new EllipseFigure
{
IsFilled = true,
RadiusX = 0.3f,
RadiusY = 0.35f,
};
figureNode = new FigureNode(figure)
{
Name = "Ellipse #3",
StrokeThickness = 2,
StrokeColor = new Vector3(0.3f, 0, 0.2f),
StrokeAlpha = 1,
StrokeDashPattern = new Vector4(10, 2, 3, 2) / 100,
DashInWorldSpace = true,
FillColor = new Vector3(0.7f, 0, 0.5f),
FillAlpha = 0.5f,
PoseLocal = new Pose(new Vector3(-0, 2, 0))
};
_scene.Children.Add(figureNode);
figure = new EllipseFigure
{
IsFilled = true,
RadiusX = 0.5f,
RadiusY = 0.1f,
};
figureNode = new FigureNode(figure)
{
Name = "Ellipse #4",
StrokeThickness = 2,
StrokeColor = new Vector3(0, 0, 0),
StrokeAlpha = 1,
StrokeDashPattern = new Vector4(1, 1, 1, 1) / 100,
DashInWorldSpace = true,
FillColor = new Vector3(0.3f, 0.3f, 0.3f),
FillAlpha = 0.5f,
PoseLocal = new Pose(new Vector3(1, 2, 0))
};
_scene.Children.Add(figureNode);
figure = new EllipseFigure
{
IsFilled = true,
RadiusX = 0.2f,
RadiusY = 0.25f,
};
figureNode = new FigureNode(figure)
{
Name = "Ellipse #5",
StrokeThickness = 2,
StrokeColor = new Vector3(0.3f),
StrokeAlpha = 1,
FillColor = new Vector3(0.3f),
FillAlpha = 1,
PoseLocal = new Pose(new Vector3(2, 2, 0))
};
_scene.Children.Add(figureNode);
}
