private void RenderLayer(Graphics graphics, GerberProject project, RenderInformation renderInfo, int fileIndex)
{
GerberFileInformation fileInfo = project.FileInfo[fileIndex];
int bmWidth = 0;
int bmHeight = 0;
// Calculate how big to make the bitmap back buffer.
if (renderInfo.ImageWidth < renderInfo.DisplayWidth)
{
bmWidth = (int)(renderInfo.DisplayWidth * graphics.DpiX);
}
else
{
bmWidth = (int)(renderInfo.ImageWidth * graphics.DpiX);
}
if (renderInfo.ImageHeight < renderInfo.DisplayHeight)
{
bmHeight = (int)(renderInfo.DisplayHeight * graphics.DpiY);
}
else
{
bmHeight = (int)(renderInfo.ImageHeight * graphics.DpiY);
}
// Create a back buffer and draw to it with no alpha level.
using (Bitmap bitmap = new Bitmap(bmWidth, bmHeight, graphics))
using (Graphics backBuffer = Graphics.FromImage(bitmap))
{
backBuffer.CompositingMode = CompositingMode.SourceCopy;
ScaleAndTranslate(backBuffer, renderInfo);
// For testing.
/*BoundingBox bb = GetProjectBounds(project);
* RectangleF r = new RectangleF((float)bb.Left, (float)bb.Top, (float)(bb.Right - bb.Left), (float)(bb.Top - bb.Bottom));
* GraphicsPath path = new GraphicsPath();
* path.AddLine((float)bb.Left, (float)bb.Bottom, (float)bb.Left, (float)(bb.Top));
* path.AddLine((float)bb.Left, (float)bb.Top, (float)bb.Right, (float)bb.Top);
* path.AddLine((float)bb.Right, (float)bb.Top, (float)bb.Right, (float)bb.Bottom);
* path.AddLine((float)bb.Right, (float)bb.Bottom, (float)bb.Left, (float)bb.Bottom);
* backBuffer.DrawPath(new Pen(Color.FromArgb(117, 200, 0, 0), 0.015f), path); */
// Add transparency to the rendering color.
Color foregroundColor = Color.FromArgb(fileInfo.Alpha, fileInfo.Color);
GerberDraw.DrawImageToTarget(backBuffer, fileInfo, project.UserTransform, foregroundColor, backgroundColor);
// Copy the back buffer to the visible surface with alpha level.
graphics.CompositingMode = CompositingMode.SourceOver;
graphics.DrawImage(bitmap, 0, 0);
}
}
/// <summary>
/// Draw the user selection layer;
/// </summary>
/// <param name="graphics">surface to render the image</param>
/// <param name="project">project containing the files to render</param>
/// <param name="renderInfo">information for positioning, scaling and translating</param>
/// <param name="selectionInfo">information about the users selection</param>
public void RenderSelectionLayer(Graphics graphics, GerberProject project, RenderInformation renderInfo, SelectionInformation selectionInfo)
{
int bmWidth = 0;
int bmHeight = 0;
// Calculate how big to make the bitmap back buffer.
if (renderInfo.ImageWidth < renderInfo.DisplayWidth)
{
bmWidth = (int)(renderInfo.DisplayWidth * graphics.DpiX);
}
else
{
bmWidth = (int)(renderInfo.ImageWidth * graphics.DpiX);
}
if (renderInfo.ImageHeight < renderInfo.DisplayHeight)
{
bmHeight = (int)(renderInfo.DisplayHeight * graphics.DpiY);
}
else
{
bmHeight = (int)(renderInfo.ImageHeight * graphics.DpiY);
}
// Create a back buffer and draw to it with no alpha level.
using (Bitmap bitmap = new Bitmap(bmWidth, bmHeight, graphics))
using (Graphics backBuffer = Graphics.FromImage(bitmap))
{
backBuffer.CompositingMode = CompositingMode.SourceOver;
ScaleAndTranslate(backBuffer, renderInfo);
Color foregroundColor = Color.FromArgb(177, Color.White);
GerberDraw.DrawImageToTarget(backBuffer, selectionInfo, project.UserTransform, foregroundColor, backgroundColor);
// Copy the back buffer to the visible surface with alpha level.
graphics.CompositingMode = CompositingMode.SourceOver;
graphics.DrawImage(bitmap, 0, 0);
}
}