//
//
// 2D Stuff
//
//
/// <summary>
/// Draw a line in screenspace using pixel coords.
/// </summary>
/// <param name="p0"></param>
/// <param name="p1"></param>
/// <param name="color"></param>
public static void Draw2DLine(Vector2 p0, Vector2 p1, Vector4 color)
{
// Add a half pixel offset to get things to line up cleanly.
p0 += new Vector2(0.5f, 0.5f);
p1 += new Vector2(0.5f, 0.5f);
// Convert from pixel coords to homogeneous coords.
p0.X = p0.X / BokuGame.bokuGame.GraphicsDevice.Viewport.Width * 2.0f - 1.0f;
p0.Y = -(p0.Y / BokuGame.bokuGame.GraphicsDevice.Viewport.Height * 2.0f - 1.0f);
p1.X = p1.X / BokuGame.bokuGame.GraphicsDevice.Viewport.Width * 2.0f - 1.0f;
p1.Y = -(p1.Y / BokuGame.bokuGame.GraphicsDevice.Viewport.Height * 2.0f - 1.0f);
// Create the vertices.
UtilsVertex[] verts = new UtilsVertex[2];
verts[0] = new UtilsVertex(new Vector3(p0, 0.0f), color);
verts[1] = new UtilsVertex(new Vector3(p1, 0.0f), color);
effect.CurrentTechnique = effect.Techniques["Screenspace2D"];
GraphicsDevice device = BokuGame.bokuGame.GraphicsDevice;
// Render all passes.
for (int i = 0; i < effect.CurrentTechnique.Passes.Count; i++)
{
EffectPass pass = effect.CurrentTechnique.Passes[i];
pass.Apply();
try
{
device.DrawUserPrimitives(PrimitiveType.LineList, verts, 0, 1);
}
catch
{
}
}
} // end of Draw2DLine()
public static void DrawLine(Camera camera, Vector3 p0, Vector3 p1, Vector4 color, ref Matrix worldMatrix)
{
Matrix viewMatrix = camera.ViewMatrix;
Matrix projMatrix = camera.ProjectionMatrix;
Matrix worldViewProjMatrix = worldMatrix * viewMatrix * projMatrix;
effect.Parameters["WorldViewProjMatrix"].SetValue(worldViewProjMatrix);
effect.Parameters["WorldMatrix"].SetValue(worldMatrix);
// Create the vertices.
UtilsVertex[] verts = new UtilsVertex[2];
verts[0] = new UtilsVertex(p0, color);
verts[1] = new UtilsVertex(p1, color);
effect.CurrentTechnique = effect.Techniques["NoTexture"];
GraphicsDevice device = BokuGame.bokuGame.GraphicsDevice;
// Render all passes.
for (int i = 0; i < effect.CurrentTechnique.Passes.Count; i++)
{
EffectPass pass = effect.CurrentTechnique.Passes[i];
pass.Apply();
device.DrawUserPrimitives(PrimitiveType.LineList, verts, 0, 1);
}
} // end of Utils DrawLine()
/// <summary>
/// Draw a series of line segments. That means pts must have even number positions.
/// </summary>
/// <param name="camera"></param>
/// <param name="pts"></param>
/// <param name="color"></param>
/// <param name="localToWorld"></param>
public static void DrawLines(Camera camera, List <Vector3> pts, Vector4 color, ref Matrix localToWorld)
{
if (pts.Count > 0)
{
Matrix viewMatrix = camera.ViewMatrix;
Matrix projMatrix = camera.ProjectionMatrix;
Matrix worldViewProjMatrix = localToWorld * viewMatrix * projMatrix;
effect.Parameters["WorldViewProjMatrix"].SetValue(worldViewProjMatrix);
effect.Parameters["WorldMatrix"].SetValue(localToWorld);
// Create the vertices.
if (vertsScratch.Length < pts.Count)
{
vertsScratch = new UtilsVertex[pts.Count];
}
for (int i = 0; i < pts.Count; ++i)
{
///UtilsVertex is a struct, so no real new here.
vertsScratch[i] = new UtilsVertex(pts[i], color);
}
effect.CurrentTechnique = effect.Techniques["NoTexture"];
GraphicsDevice device = BokuGame.bokuGame.GraphicsDevice;
// Render all passes.
for (int i = 0; i < effect.CurrentTechnique.Passes.Count; i++)
{
EffectPass pass = effect.CurrentTechnique.Passes[i];
pass.Apply();
device.DrawUserPrimitives(PrimitiveType.LineList, vertsScratch, 0, pts.Count / 2);
}
}
}
