/// <summary>
/// Called once per frame, the call is the entry point for 3d
/// rendering. This function sets up render states, clears the
/// viewport, and renders the scene.
/// </summary>
public void Render()
{
fpsTimer.StartFrame();
//Clear the backbuffer to a black color
device.Clear(ClearFlags.Target | ClearFlags.ZBuffer,
Color.Black, 1.0f, 0);
//Begin the scene
device.BeginScene();
// set the vertexbuffer stream source
device.SetStreamSource(0, vertexBuffer, 0);
// set fill mode
device.RenderState.FillMode = FillMode.Solid;
// set the indices
device.Indices = indexBuffer;
//use the indices buffer
device.DrawIndexedPrimitives(PrimitiveType.TriangleList,
0, 0, bufferSize * bufferSize, 0, vert_size / 3);
// Write instructions on the screen
drawingFont.DrawText(null, "Tap screen to generate\n new fractal.",
new Point(2, 40), System.Drawing.Color.White);
// output statistics
fpsTimer.Render();
device.EndScene();
device.Present();
fpsTimer.StopFrame();
}
/// <summary>
/// Called once per frame, the call is the entry point for 3d
/// rendering. This function sets up render states, clears the
/// viewport, and renders the scene.
/// </summary>
public void Render()
{
fpsTimer.StartFrame();
// clears the frame
device.Clear(ClearFlags.Target, 0, 1.0f, 0);
try
{
// start drawing commands
device.BeginScene();
int height = ClientRectangle.Height;
int width = ClientRectangle.Width;
System.Drawing.Rectangle rect;
// Demonstration 1
// Draw a simple line using DrawText
// Pass in DrawTextFormat.NoClip so we don't have to calc
// the bottom/right of the rect
font1.DrawText(null,
"This is a trivial call to Font.DrawText",
new System.Drawing.Rectangle(5, 150, 0, 0),
DrawTextFormat.NoClip, System.Drawing.Color.Red);
// Demonstration 2
// Allow multiple draw calls to sort by texture changes
// by Sprite When drawing 2D text use flags:
// SpriteFlags.AlphaBlend | SpriteFlags.SortTexture.
textDrawerSprite.Begin(SpriteFlags.AlphaBlend |
SpriteFlags.SortTexture);
rect = new System.Drawing.Rectangle(5, height - 15 * 6, 0, 0);
font2.DrawText(textDrawerSprite,
"These are multiple calls to Font.DrawText()",
rect, DrawTextFormat.NoClip, Color.White);
rect = new System.Drawing.Rectangle(5, height - 15 * 5, 0, 0);
font2.DrawText(textDrawerSprite,
"using the same Sprite. The font now caches",
rect, DrawTextFormat.NoClip, Color.White);
rect = new System.Drawing.Rectangle(5, height - 15 * 4, 0, 0);
font2.DrawText(textDrawerSprite,
"letters on one or more textures. In order",
rect, DrawTextFormat.NoClip, Color.White);
rect = new System.Drawing.Rectangle(5, height - 15 * 3, 0, 0);
font2.DrawText(textDrawerSprite,
"to sort by texturestate changes on multiple",
rect, DrawTextFormat.NoClip, Color.White);
rect = new System.Drawing.Rectangle(5, height - 15 * 2, 0, 0);
font2.DrawText(textDrawerSprite,
"calls to DrawText() pass a Sprite and use flags",
rect, DrawTextFormat.NoClip, Color.White);
rect = new System.Drawing.Rectangle(5, height - 15 * 1, 0, 0);
font2.DrawText(textDrawerSprite,
"SpriteFlags.AlphaBlend | SpriteFlags.SortTexture",
rect, DrawTextFormat.NoClip, Color.White);
textDrawerSprite.End();
// Demonstration 3:
// Word wrapping and unicode text.
// Note that not all fonts support dynamic font linking.
System.Drawing.Rectangle rc =
new System.Drawing.Rectangle(10, 35,
width - 30, height - 10);
font2.DrawText(null, bigText, rc,
DrawTextFormat.Left | DrawTextFormat.WordBreak |
DrawTextFormat.ExpandTabs,
System.Drawing.Color.CornflowerBlue);
// write the fps
fpsTimer.Render();
}
finally
{
// end the drawing commands and copy to screen
device.EndScene();
device.Present();
fpsTimer.StopFrame();
}
}