private void CreateSquare(float lineThickness, bool isAntiAlias, Color lineColor, Vector3[] vertices)
{
using (var lineContext = base.BeginLineStrips(lineThickness, isAntiAlias))
{
lineContext.SetVertexColor(lineColor);
// Pass Entity ID value for a hit test purpose
ulong selectionColor = SciChart3DNative.EncodeSelectionId(EntityId, 0);
lineContext.SetSelectionId(selectionColor);
foreach (var v in vertices)
{
SetVertex(lineContext, v);
}
SetVertex(lineContext, vertices.First());
lineContext.Freeze();
lineContext.Draw();
}
}
/// <summary>
/// Called when the 3D Engine wishes to render this element. This is where geometry must be drawn to the 3D scene
/// </summary>
/// <param name="rpi">The <see cref="IRenderPassInfo3D" /> containing parameters for the current render pass.</param>
public override void RenderScene(IRenderPassInfo3D rpi)
{
float bottomRightCoordX = bottomRight.X;
float bottomRightCoordY = bottomRight.Y;
float bottomRightCoordZ = bottomRight.Z;
float topLeftCoordX = topLeft.X;
float topLeftCoordY = topLeft.Y;
float topLeftCoordZ = topLeft.Z;
// Commented code below is the example of treating the Location value
// as 3D point in Data Coordinates Space but not in World Coordinates Space
//bottomRightCoordX = (float)e.XCalc.GetCoordinate(bottomRight.X) - e.WorldDimensions.X / 2.0f;
//bottomRightCoordY = (float)e.YCalc.GetCoordinate(bottomRight.Y);
//bottomRightCoordZ = (float)e.ZCalc.GetCoordinate(bottomRight.Z) - e.WorldDimensions.Z / 2.0f;
//topLeftCoordX = (float)e.XCalc.GetCoordinate(topLeft.X) - e.WorldDimensions.X / 2.0f;
//topLeftCoordY = (float)e.YCalc.GetCoordinate(topLeft.Y);
//topLeftCoordZ = (float)e.ZCalc.GetCoordinate(topLeft.Z) - e.WorldDimensions.Z / 2.0f;
// y 1--------0
// | /| /|
// | 5--------4 |
// | | | | |
// | | | | |
// | | 2--------3
// | z | / |/
// | / 6--------7
// |/
// ----------- X
Vector3[] corners =
{
new Vector3(topLeftCoordX, topLeftCoordY, topLeftCoordZ), //0
new Vector3(bottomRightCoordX, topLeftCoordY, topLeftCoordZ), //1
new Vector3(bottomRightCoordX, bottomRightCoordY, topLeftCoordZ), //2
new Vector3(topLeftCoordX, bottomRightCoordY, topLeftCoordZ), //3
new Vector3(topLeftCoordX, topLeftCoordY, bottomRightCoordZ), //4
new Vector3(bottomRightCoordX, topLeftCoordY, bottomRightCoordZ), //5
new Vector3(bottomRightCoordX, bottomRightCoordY, bottomRightCoordZ), //6
new Vector3(topLeftCoordX, bottomRightCoordY, bottomRightCoordZ), //7
};
Vector3[] normals =
{
new Vector3(+0.0f, +0.0f, -1.0f), //front
new Vector3(+0.0f, +0.0f, +1.0f), //back
new Vector3(+1.0f, +0.0f, +0.0f), //right
new Vector3(-1.0f, +0.0f, +0.0f), //left
new Vector3(+0.0f, +1.0f, +0.0f), //top
new Vector3(+0.0f, -1.0f, +0.0f), //bottom
};
// We create a mesh context. There are various mesh render modes. The simplest is Triangles
// For this mode we have to draw a single triangle (three vertices) for each corner of the cube
// You can see
using (var meshContext = base.BeginLitMesh(TSRRenderMode.TRIANGLES))
{
// Set the Rasterizer State for this entity
SciChart3DNative.PushRasterizerState(RasterizerStates.CullBackFacesState.TSRRasterizerState);
// Set the color before drawing vertices
meshContext.SetVertexColor(cubeColor);
// Pass Entity ID value for a hit test purpose
ulong selectionColor = SciChart3DNative.EncodeSelectionId(EntityId, 0);
meshContext.SetSelectionId(selectionColor);
// Now draw the triangles. Each face of the cube is made up of two triangles
// Front face
SetNormal(meshContext, normals[0]);
SetVertex(meshContext, corners[0]);
SetVertex(meshContext, corners[2]);
SetVertex(meshContext, corners[1]);
SetVertex(meshContext, corners[2]);
SetVertex(meshContext, corners[0]);
SetVertex(meshContext, corners[3]);
// Right side face
SetNormal(meshContext, normals[2]);
SetVertex(meshContext, corners[1]);
SetVertex(meshContext, corners[2]);
SetVertex(meshContext, corners[6]);
SetVertex(meshContext, corners[1]);
SetVertex(meshContext, corners[6]);
SetVertex(meshContext, corners[5]);
// Top face
SetNormal(meshContext, normals[4]);
SetVertex(meshContext, corners[2]);
SetVertex(meshContext, corners[7]);
SetVertex(meshContext, corners[6]);
SetVertex(meshContext, corners[7]);
SetVertex(meshContext, corners[2]);
SetVertex(meshContext, corners[3]);
// Left side face
SetNormal(meshContext, normals[3]);
SetVertex(meshContext, corners[3]);
SetVertex(meshContext, corners[0]);
SetVertex(meshContext, corners[4]);
SetVertex(meshContext, corners[3]);
SetVertex(meshContext, corners[4]);
SetVertex(meshContext, corners[7]);
// Back face
SetNormal(meshContext, normals[1]);
SetVertex(meshContext, corners[7]);
SetVertex(meshContext, corners[5]);
SetVertex(meshContext, corners[6]);
SetVertex(meshContext, corners[7]);
SetVertex(meshContext, corners[4]);
SetVertex(meshContext, corners[5]);
// Bottom face
SetNormal(meshContext, normals[5]);
SetVertex(meshContext, corners[0]);
SetVertex(meshContext, corners[1]);
SetVertex(meshContext, corners[5]);
SetVertex(meshContext, corners[0]);
SetVertex(meshContext, corners[5]);
SetVertex(meshContext, corners[4]);
}
// Revert raster state
SciChart3DNative.PopRasterizerState();
// Set the Rasterizer State for wireframe
SciChart3DNative.PushRasterizerState(RasterizerStates.WireframeState.TSRRasterizerState);
// Create a Line Context for a continuous line and draw the outline of the cube
var lineColor = Color.FromArgb(0xFF, cubeColor.R, cubeColor.G, cubeColor.B);
CreateSquare(2.0f, true, lineColor, new[] { corners[0], corners[1], corners[2], corners[3] });
CreateSquare(2.0f, true, lineColor, new[] { corners[4], corners[5], corners[6], corners[7] });
CreateSquare(2.0f, true, lineColor, new[] { corners[0], corners[4], corners[7], corners[3] });
CreateSquare(2.0f, true, lineColor, new[] { corners[5], corners[1], corners[2], corners[6] });
// Revert raster state
SciChart3DNative.PopRasterizerState();
}
