/// <summary>
/// Deep copy all of the Particle properties
/// </summary>
/// <param name="ParticleToCopy">The Particle to Copy the properties from</param>
public override void CopyFrom(DPSFParticle ParticleToCopy)
{
// Cast the Particle to the type it really is
DefaultTextureQuadTextureCoordinatesParticle cParticleToCopy = (DefaultTextureQuadTextureCoordinatesParticle)ParticleToCopy;
base.CopyFrom(cParticleToCopy);
this.NormalizedTextureCoordinateLeftTop = cParticleToCopy.NormalizedTextureCoordinateLeftTop;
this.NormalizedTextureCoordinateRightBottom = cParticleToCopy.NormalizedTextureCoordinateRightBottom;
}
//===========================================================
// Vertex Update and Overridden Particle System Functions
//===========================================================
/// <summary>
/// Function to update the Vertex properties according to the Particle properties
/// </summary>
/// <param name="sVertexBuffer">The array containing the Vertices to be drawn</param>
/// <param name="iIndex">The Index in the array where the Particle's Vertex info should be placed</param>
/// <param name="Particle">The Particle to copy the information from</param>
protected override void UpdateVertexProperties(ref DefaultTexturedQuadParticleVertex[] sVertexBuffer, int iIndex, DPSFParticle Particle)
{
// Cast the Particle to the type it really is
DefaultTextureQuadTextureCoordinatesParticle cParticle = (DefaultTextureQuadTextureCoordinatesParticle)Particle;
// Calculate what half of the Quads Width and Height are
float fHalfWidth = cParticle.Width / 2.0f;
float fHalfHeight = cParticle.Height / 2.0f;
// Calculate the Positions of the Quads corners around the origin
Vector3 sTopLeft = new Vector3(-fHalfWidth, fHalfHeight, 0);
Vector3 sTopRight = new Vector3(fHalfWidth, fHalfHeight, 0);;
Vector3 sBottomLeft = new Vector3(-fHalfWidth, -fHalfHeight, 0);;
Vector3 sBottomRight = new Vector3(fHalfWidth, -fHalfHeight, 0);;
// Rotate the Quad corners around the origin according to its Orientation,
// then calculate their final Positions
sTopLeft = Vector3.Transform(sTopLeft, cParticle.Orientation) + cParticle.Position;
sTopRight = Vector3.Transform(sTopRight, cParticle.Orientation) + cParticle.Position;
sBottomLeft = Vector3.Transform(sBottomLeft, cParticle.Orientation) + cParticle.Position;
sBottomRight = Vector3.Transform(sBottomRight, cParticle.Orientation) + cParticle.Position;
// Copy this Particle's renderable Properties to the Vertex Buffer
// This is a Quad so we must copy all 4 Vertices over
sVertexBuffer[iIndex].Position = sBottomLeft;
sVertexBuffer[iIndex].TextureCoordinate = new Vector2(cParticle.NormalizedTextureCoordinateLeftTop.X, cParticle.NormalizedTextureCoordinateRightBottom.Y);
sVertexBuffer[iIndex].Color = cParticle.Color;
sVertexBuffer[iIndex + 1].Position = sTopLeft;
sVertexBuffer[iIndex + 1].TextureCoordinate = cParticle.NormalizedTextureCoordinateLeftTop;
sVertexBuffer[iIndex + 1].Color = cParticle.Color;
sVertexBuffer[iIndex + 2].Position = sBottomRight;
sVertexBuffer[iIndex + 2].TextureCoordinate = cParticle.NormalizedTextureCoordinateRightBottom;
sVertexBuffer[iIndex + 2].Color = cParticle.Color;
sVertexBuffer[iIndex + 3].Position = sTopRight;
sVertexBuffer[iIndex + 3].TextureCoordinate = new Vector2(cParticle.NormalizedTextureCoordinateRightBottom.X, cParticle.NormalizedTextureCoordinateLeftTop.Y);
sVertexBuffer[iIndex + 3].Color = cParticle.Color;
// Fill in the Index Buffer for the newly added Vertices.
// Specify the Vertices in Counter-Clockwise order.
// It takes 6 Indices to represent a quad (2 triangles = 6 corners).
// If we're using the HiDef profile, fill in the regular Index Buffer.
if (this.GraphicsDevice.GraphicsProfile == GraphicsProfile.HiDef)
{
IndexBuffer[IndexBufferIndex++] = iIndex;
IndexBuffer[IndexBufferIndex++] = iIndex + 2;
IndexBuffer[IndexBufferIndex++] = iIndex + 1;
IndexBuffer[IndexBufferIndex++] = iIndex + 2;
IndexBuffer[IndexBufferIndex++] = iIndex + 3;
IndexBuffer[IndexBufferIndex++] = iIndex + 1;
}
// Else we're using the Reach profile, so fill the Reach Index Buffer instead.
else
{
IndexBufferReach[IndexBufferIndex++] = (short)(iIndex);
IndexBufferReach[IndexBufferIndex++] = (short)(iIndex + 2);
IndexBufferReach[IndexBufferIndex++] = (short)(iIndex + 1);
IndexBufferReach[IndexBufferIndex++] = (short)(iIndex + 2);
IndexBufferReach[IndexBufferIndex++] = (short)(iIndex + 3);
IndexBufferReach[IndexBufferIndex++] = (short)(iIndex + 1);
}
}
