public void createEllipse()
{
manualObject.clear();
manualObject.begin("ManualTwoSidedPropShapeMaterial", OperationType.OT_TRIANGLE_STRIP);
uint vertexCount = (uint)(numSections * 2);
uint indexCount = vertexCount + 2;
manualObject.estimateVertexCount(vertexCount);
manualObject.estimateIndexCount(indexCount);
float increment = 6.28f / numSections;
for (uint i = 0; i < numSections; ++i)
{
float t = i * increment;
Vector2 ellipsePosition = innerEllipse.getPoint(t);
manualObject.position(new Vector3(ellipsePosition.x, ellipsePosition.y, 0));
manualObject.color(color.r, color.g, color.b, color.a);
ellipsePosition = outerEllipse.getPoint(t);
manualObject.position(new Vector3(ellipsePosition.x, ellipsePosition.y, 0));
manualObject.color(color.r, color.g, color.b, color.a);
manualObject.index(i * 2);
manualObject.index(i * 2 + 1);
}
//Close the ellipse
manualObject.index(0);
manualObject.index(1);
manualObject.end();
}
public void createLine()
{
manualObject.clear();
manualObject.begin("ManualTwoSidedPropShapeMaterial", OperationType.OT_LINE_LIST);
manualObject.position(0, 0, 0);
manualObject.color(color.r, color.g, color.b, color.a);
manualObject.position(0, length, 0);
manualObject.color(color.r, color.g, color.b, color.a);
manualObject.end();
}
/// <summary>
/// Draw a grid with the given spacing in milimeters taking up the space specified by gridmax.
/// </summary>
/// <param name="gridSpacingMM">The number of milimeters to space the grid lines.</param>
/// <param name="gridMax">The area of the grid in 3d units.</param>
private void redraw()
{
float gridSpacing = gridSpacingMM * (1.0f / SimulationConfig.UnitsToMM);
Vector3 startPoint = new Vector3(0.0f, -gridMax, 0.0f);
Vector3 endPoint = new Vector3(0.0f, gridMax, 0.0f);
manualObject.clear();
manualObject.begin("Grid", OperationType.OT_LINE_LIST);
for (float x = 0; x < gridMax; x += gridSpacing)
{
startPoint.x = x;
endPoint.x = x;
manualObject.position(ref startPoint);
manualObject.color(color.r, color.g, color.b, color.a);
manualObject.position(ref endPoint);
manualObject.color(color.r, color.g, color.b, color.a);
}
for (float x = -gridSpacing; x > -gridMax; x -= gridSpacing)
{
startPoint.x = x;
endPoint.x = x;
manualObject.position(ref startPoint);
manualObject.color(color.r, color.g, color.b, color.a);
manualObject.position(ref endPoint);
manualObject.color(color.r, color.g, color.b, color.a);
}
startPoint.x = -gridMax;
endPoint.x = gridMax;
for (float y = 0; y < gridMax; y += gridSpacing)
{
startPoint.y = y;
endPoint.y = y;
manualObject.position(ref startPoint);
manualObject.color(color.r, color.g, color.b, color.a);
manualObject.position(ref endPoint);
manualObject.color(color.r, color.g, color.b, color.a);
}
for (float y = -gridSpacing; y > -gridMax; y -= gridSpacing)
{
startPoint.y = y;
endPoint.y = y;
manualObject.position(ref startPoint);
manualObject.color(color.r, color.g, color.b, color.a);
manualObject.position(ref endPoint);
manualObject.color(color.r, color.g, color.b, color.a);
}
manualObject.end();
}
public void createObject()
{
manualObject.clear();
manualObject.begin("ManualTwoSidedPropShapeMaterial", OperationType.OT_TRIANGLE_STRIP);
uint vertexCount = (uint)(4);
uint indexCount = vertexCount + 2;
manualObject.estimateVertexCount(vertexCount);
manualObject.estimateIndexCount(indexCount);
//0 1
//
//2 3
//
float widthHalfExtent = size.Width / 2.0f;
float heightHalfExtent = size.Height / 2.0f;
//Upper Left (0)
manualObject.position(new Vector3(-widthHalfExtent, heightHalfExtent, 0f));
manualObject.color(color.r, color.g, color.b, color.a);
//Upper Right (1)
manualObject.position(new Vector3(widthHalfExtent, heightHalfExtent, 0f));
manualObject.color(color.r, color.g, color.b, color.a);
//Lower Left (2)
manualObject.position(new Vector3(-widthHalfExtent, -heightHalfExtent, 0f));
manualObject.color(color.r, color.g, color.b, color.a);
//Lower Right (3)
manualObject.position(new Vector3(widthHalfExtent, -heightHalfExtent, 0f));
manualObject.color(color.r, color.g, color.b, color.a);
//First Triangle
manualObject.index(1);
manualObject.index(0);
manualObject.index(3);
//Second Triangle
manualObject.index(3);
manualObject.index(2);
manualObject.index(0);
manualObject.end();
}
