/// <summary>Writes the vertices to the meshes buffer. Called during a layout event.</summary>
public void Layout()
{
// Apply the vertices:
if (Transform != null)
{
// Top Left:
ParentMesh.Vertices.Buffer[VertexIndex] = Transform.Apply(VertexTopLeft);
// Top Right:
ParentMesh.Vertices.Buffer[VertexIndex + 1] = Transform.Apply(VertexTopRight);
// Bottom Left:
ParentMesh.Vertices.Buffer[VertexIndex + 2] = Transform.Apply(VertexBottomLeft);
// Bottom Right:
ParentMesh.Vertices.Buffer[VertexIndex + 3] = Transform.Apply(VertexBottomRight);
}
else
{
// Top Left:
ParentMesh.Vertices.Buffer[VertexIndex] = VertexTopLeft;
// Top Right:
ParentMesh.Vertices.Buffer[VertexIndex + 1] = VertexTopRight;
// Bottom Left:
ParentMesh.Vertices.Buffer[VertexIndex + 2] = VertexBottomLeft;
// Bottom Right:
ParentMesh.Vertices.Buffer[VertexIndex + 3] = VertexBottomRight;
}
}
/// <summary>Calculates where the transformation origin should go in screen space.</summary>
/// <param name="relativeTo">The computed style of the element that the origin will be
/// relative to if the origin position is 'Relative'</param>
private void CalculateOrigin(ComputedStyle relativeTo)
{
// We need to figure out where the origin is and then apply the parent transformation to it.
_Origin = _OriginOffset;
if (_OriginOffsetPercX)
{
_Origin.x *= relativeTo.PixelWidth;
}
if (_OriginOffsetPercY)
{
_Origin.y *= relativeTo.PixelHeight;
}
if (_OriginPosition == PositionType.Relative)
{
_Origin.x += relativeTo.OffsetLeft;
_Origin.y += relativeTo.OffsetTop;
}
// Map origin to world space:
Renderman renderer = relativeTo.Element.Document.Renderer;
_Origin = renderer.PixelToWorldUnit(_Origin.x, _Origin.y, relativeTo.ZIndex);
if (Parent != null)
{
_Origin = Parent.Apply(_Origin);
}
}
/// <summary>Writes out the data to the meshes buffers.</summary>
public void Done(Transformation transform)
{
int vertexIndex = VertexIndex;
int triangleIndex = TriangleIndex;
Vector3[] verts;
Vector3[] normals;
int[] triangles;
Color[] colours;
Vector2[] uv1;
Vector2[] uv2;
int triOffset;
// Get the raw buffers:
if (Buffer == null)
{
// Paint mode.
verts = Mesh.Vertices.Buffer;
normals = Mesh.Normals.Buffer;
triangles = Mesh.Triangles.Buffer;
colours = Mesh.Colours.Buffer;
uv1 = Mesh.UV.Buffer;
uv2 = Mesh.UV2.Buffer;
triOffset = 0;
}
else
{
// Layout mode.
verts = Buffer.Vertices;
normals = Buffer.Normals;
triangles = Buffer.Triangles;
colours = Buffer.Colours;
uv1 = Buffer.UV1;
uv2 = Buffer.UV2;
triOffset = Buffer.Offset + vertexIndex;
}
// First triangle - Top left corner:
triangles[triangleIndex++] = triOffset;
// Top right corner:
triangles[triangleIndex++] = triOffset + 1;
// Bottom left corner:
triangles[triangleIndex++] = triOffset + 2;
// Second triangle - Top right corner:
triangles[triangleIndex++] = triOffset + 1;
// Bottom right corner:
triangles[triangleIndex++] = triOffset + 3;
// Bottom left corner:
triangles[triangleIndex++] = triOffset + 2;
// Vertices next!
if (transform != null)
{
// Top Left:
verts[vertexIndex] = transform.Apply(VertexTopLeft);
// Top Right:
verts[vertexIndex + 1] = transform.Apply(VertexTopRight);
// Bottom Left:
verts[vertexIndex + 2] = transform.Apply(VertexBottomLeft);
// Bottom Right:
verts[vertexIndex + 3] = transform.Apply(VertexBottomRight);
if (normals != null)
{
// Top Left:
normals[vertexIndex] = transform.Apply(new Vector3(0f, 0f, -1f));
// Top Right:
normals[vertexIndex + 1] = transform.Apply(new Vector3(0f, 0f, -1f));
// Bottom Left:
normals[vertexIndex + 2] = transform.Apply(new Vector3(0f, 0f, -1f));
// Bottom Right:
normals[vertexIndex + 3] = transform.Apply(new Vector3(0f, 0f, -1f));
}
}
else
{
// Top Left:
verts[vertexIndex] = VertexTopLeft;
// Top Right:
verts[vertexIndex + 1] = VertexTopRight;
// Bottom Left:
verts[vertexIndex + 2] = VertexBottomLeft;
// Bottom Right:
verts[vertexIndex + 3] = VertexBottomRight;
if (normals != null)
{
// Top Left:
normals[vertexIndex] = new Vector3(0f, 0f, -1f);
// Top Right:
normals[vertexIndex + 1] = new Vector3(0f, 0f, -1f);
// Bottom Left:
normals[vertexIndex + 2] = new Vector3(0f, 0f, -1f);
// Bottom Right:
normals[vertexIndex + 3] = new Vector3(0f, 0f, -1f);
}
}
// The UVs:
if (ImageUV != null)
{
ImageUV.Write(uv1, vertexIndex);
}
else
{
BlankUV.Write(uv1, vertexIndex);
}
if (TextUV != null)
{
TextUV.Write(uv2, vertexIndex);
}
else
{
BlankUV.Write(uv2, vertexIndex);
}
#if LINEAR
Color colour = Colour.linear;
#else
Color colour = Colour;
#endif
for (int i = 0; i < 4; i++)
{
colours[vertexIndex + i] = colour;
}
}