private static void ScaleAndTranslate(Graphics graphics, RenderInformation renderInfo)
{
if (renderInfo.RenderType == GerberRenderQuality.Default)
{
graphics.SmoothingMode = SmoothingMode.Default;
}
else if (renderInfo.RenderType == GerberRenderQuality.HighQuality)
{
graphics.SmoothingMode = SmoothingMode.HighQuality;
}
else
{
graphics.SmoothingMode = SmoothingMode.HighSpeed;
}
graphics.PageUnit = GraphicsUnit.Inch;
double translateX = (renderInfo.Left * renderInfo.ScaleFactorX);
double translateY = (renderInfo.Bottom * renderInfo.ScaleFactorY);
// Translate the draw area before drawing. We must translate the whole drawing down
// an additional displayHeight to account for the negative y flip done later.
graphics.ScaleTransform(1, -1);
graphics.TranslateTransform((float)(translateX + renderInfo.ScrollValueX), (float)(translateY - renderInfo.ScrollValueY));
//graphics.TranslateTransform(-(float)(translateX - renderInfo.ScrollValueX), (float)(translateY + renderInfo.ImageHeight + renderInfo.ScrollValueY));
//graphics.ScaleTransform((float)renderInfo.ScaleFactorY, -(float)renderInfo.ScaleFactorY);
}
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>
/// Draws all the visible layers contained in the project.
/// </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>
public void RenderAllLayers(Graphics graphics, GerberProject project, RenderInformation renderInfo)
{
int fileIndex = project.FileInfo.Count - 1;
backgroundColor = project.BackgroundColor;
graphics.Clear(backgroundColor);
for (int i = fileIndex; i >= 0; i--)
{
if (project.FileInfo[i] != null && project.FileInfo[i].IsVisible)
{
RenderLayer(graphics, project, renderInfo, i);
}
}
}
/// <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);
}
}
/// <summary>
/// Translates the rendered image to the top left of the display area.
/// </summary>
/// <param name="project">project information</param>
/// <param name="renderInfo">render information</param>
public void TranslateToFitDisplay(GerberProject project, RenderInformation renderInfo)
{
double width, height;
BoundingBox projectBounds = GetProjectBounds(project);
if (!projectBounds.IsValid())
{
return;
}
double left = projectBounds.Left - 0.25f;
double bottom = projectBounds.Bottom - 0.25f;
double right = projectBounds.Right + 0.25f;
double top = projectBounds.Top + 0.25f;
width = right - left;
height = top - bottom;
renderInfo.ImageWidth = width;
renderInfo.ImageHeight = height;
renderInfo.Left = left;
renderInfo.Bottom = right;
}
/// <summary>
/// Translates the rendered image to the centre of the display area.
/// </summary>
/// <param name="project">project details</param>
/// <param name="renderInfo">render information</param>
public void TranslateToCentreDisplay(GerberProject project, RenderInformation renderInfo)
{
BoundingBox projectBounds = GetProjectBounds(project);
if (!projectBounds.IsValid())
{
return;
}
double left = projectBounds.Left - 0.25f;
double bottom = projectBounds.Bottom - 0.25f;
double right = projectBounds.Right + 0.25f;
double top = projectBounds.Top + 0.25f;
double imageWidth = right - left;
double imageHeight = top - bottom;
renderInfo.ImageWidth = imageWidth;
renderInfo.ImageHeight = imageHeight;
//renderInfo.Left = -((renderInfo.DisplayWidth - imageWidth) / 2) + left;
//renderInfo.Bottom = ((renderInfo.DisplayHeight - imageHeight) / 2) + bottom;
renderInfo.Left = ((renderInfo.DisplayWidth - imageWidth) / 2) - left;
renderInfo.Bottom = -((renderInfo.DisplayHeight + imageHeight) / 2) - bottom;
if (imageWidth > renderInfo.DisplayWidth)
{
//renderInfo.Left = left;
renderInfo.Left = -left;
}
if (imageHeight > renderInfo.DisplayHeight)
{
//renderInfo.Bottom = bottom;
renderInfo.Bottom = -(imageHeight + bottom);
}
renderInfo.ScaleFactorX = 1.0;
renderInfo.ScaleFactorY = 1.0;
}
