private void RenderText()
{
List <string> helpStrings = new List <string>();
string formatString = "{0:0.00}";
if (displayHelp)
{
helpStrings.Add("First person camera behavior");
helpStrings.Add(" Press W and S to move forwards and backwards");
helpStrings.Add(" Press A and D to strafe left and right");
helpStrings.Add(" Press E and Q to move up and down");
helpStrings.Add(" Move mouse to free look");
helpStrings.Add("");
helpStrings.Add("Flight camera behavior");
helpStrings.Add(" Press W and S to move forwards and backwards");
helpStrings.Add(" Press A and D to yaw left and right");
helpStrings.Add(" Press E and Q to move up and down");
helpStrings.Add(" Move mouse to pitch and roll");
helpStrings.Add("");
helpStrings.Add("Press M to enable/disable mouse smoothing");
helpStrings.Add("Press + and - to change camera rotation speed");
helpStrings.Add("Press , and . to change mouse sensitivity");
helpStrings.Add("Press SPACE to toggle between flight and first person behavior");
helpStrings.Add("Press ESC to exit");
helpStrings.Add("");
helpStrings.Add("Press H to hide help");
}
else
{
helpStrings.Add("Camera");
helpStrings.Add(" Speed:" + string.Format(formatString, Viewports[0].Navigation.RotationSpeed));
helpStrings.Add(" Behavior: " + Viewports[0].Navigation.Mode);
helpStrings.Add("");
helpStrings.Add("Press H to display help");
}
Font myFont = UtilityEx.GetFont(FontFamily, FontStyle, FontWeight, FontSize);
int posY = (int)Size.Height - 2 * myFont.Height;
for (int i = 0; i < helpStrings.Count; i++)
{
DrawText(10, posY, helpStrings[i], myFont, Color.White, ContentAlignment.BottomLeft);
posY -= (int)1.5 * myFont.Height;
}
}
protected override void DrawOverlay(DrawSceneParams myParams)
{
double Height = Size.Height;
double Width = Size.Width;
renderContext.SetState(depthStencilStateType.DepthTestOff);
renderContext.SetState(blendStateType.Blend);
// Draw the transparent ruler
renderContext.SetColorWireframe(Color.FromArgb((int)(0.4 * 255), 255, 255, 255));
renderContext.SetState(rasterizerStateType.CCW_PolygonFill_NoCullFace_NoPolygonOffset);
// Vertical Ruler
renderContext.DrawQuad(new RectangleF(0, 0, rulerSize, (float)(Height - rulerSize)));
// Horizontal Ruler
renderContext.DrawQuad(new RectangleF(rulerSize, (float)(Height - rulerSize), (float)(Width - rulerSize), rulerSize));
renderContext.SetState(blendStateType.NoBlend);
// choose a string format with 2 decimal numbers
string formatString = "{0:0.##}";
double worldToScreen = (Height - rulerSize) / (upperRightWorldCoord.Y - lowerLeftWorldCoord.Y);
double stepWorldX = 5, stepWorldY = 5;
double worldHeight = upperRightWorldCoord.Y - lowerLeftWorldCoord.Y;
double nlinesH = (worldHeight / stepWorldY);
double worldWidth = upperRightWorldCoord.X - lowerLeftWorldCoord.X;
double nlinesW = (worldWidth / stepWorldX);
RefineStep(nlinesH, worldHeight, ref stepWorldY);
RefineStep(nlinesW, worldWidth, ref stepWorldX);
double stepWorld = Math.Min(stepWorldX, stepWorldY);
double stepScreen = stepWorld * worldToScreen;
///////////////////////////
// Vertical ruler
///////////////////////////
// First line Y world coordinate
double startYWorld = stepWorld * Math.Floor(lowerLeftWorldCoord.Y / stepWorld);
Point2D firstLineScreenPositionY = new Point2D(0, originScreen.Y + startYWorld * worldToScreen);
double currentScreenY = firstLineScreenPositionY.Y;
double shorterLineXPos = (firstLineScreenPositionY.X + rulerSize) / 2;
// draw a longer line each 5 lines. The origin must be a longer line.
int countShortLinesY = (int)(Math.Round((currentScreenY - originScreen.Y) / stepScreen)) % 5;
// Draw the ruler lines
renderContext.SetLineSize(1);
double left;
Font myFont = UtilityEx.GetFont(FontFamily, FontStyle, FontWeight, FontSize);
for (double y = startYWorld; y < upperRightWorldCoord.Y; y += stepWorld, currentScreenY += stepScreen)
{
if (countShortLinesY % 5 == 0)
{
left = firstLineScreenPositionY.X;
}
else
{
left = shorterLineXPos;
};
renderContext.SetColorWireframe(Color.Black);
renderContext.DrawLine(new Point2D(left, currentScreenY), new Point2D(rulerSize, currentScreenY));
DrawText((int)firstLineScreenPositionY.X, (int)currentScreenY, string.Format(formatString, y), myFont, Color.Black, ContentAlignment.BottomLeft);
countShortLinesY++;
}
///////////////////////////
// Horizontal ruler
///////////////////////////
// First line X world coordinate
double startXWorld = stepWorld * Math.Ceiling(lowerLeftWorldCoord.X / stepWorld);
Point2D firstLineScreenPositionX = new Point2D(originScreen.X + startXWorld * worldToScreen, 0);
double currentScreenX = firstLineScreenPositionX.X;
double shorterLineYPos = (firstLineScreenPositionX.Y + rulerSize) / 2;
int countShortLinesX = (int)(Math.Round((currentScreenX - originScreen.X) / stepScreen)) % 5;
double top;
for (double x = startXWorld; x < upperRightWorldCoord.X; x += stepWorld, currentScreenX += stepScreen)
{
if (countShortLinesX % 5 == 0)
{
top = firstLineScreenPositionX.Y;
}
else
{
top = shorterLineYPos;
}
renderContext.SetColorWireframe(Color.Black);
renderContext.DrawLine(new Point2D(currentScreenX, Height - top), new Point2D(currentScreenX, Height - rulerSize));
DrawText((int)currentScreenX, (int)(Height - rulerSize - firstLineScreenPositionX.Y), string.Format(formatString, x), myFont, Color.Black, ContentAlignment.BottomLeft);
countShortLinesX++;
}
// Draw a red line in correspondence with the mouse position
renderContext.SetColorWireframe(Color.Red);
if (mousePos.Y > rulerSize)
{
renderContext.DrawLine(new Point3D(0, Height - mousePos.Y, 0), new Point3D(rulerSize, Height - mousePos.Y, 0));
}
if (mousePos.X > rulerSize)
{
renderContext.DrawLine(new Point3D(mousePos.X, Height, 0), new Point3D(mousePos.X, Height - rulerSize, 0));
}
// Draw the logo image at the bottom right corner
Bitmap logo = new Bitmap("../../../../../../dataset/Assets/Pictures/Logo.png");
DrawImage(Size.Width - logo.Width - 20, 20, logo);
// call the base function
base.DrawOverlay(myParams);
}
