public List <VMPoint> GetVerticesAtPoint(int x, int y, Viewport3D viewport)
{
var l = viewport.Camera.Location;
var pos = new Coordinate((decimal)l.X, (decimal)l.Y, (decimal)l.Z);
var p = new Coordinate(x, y, 0);
const int d = 5;
return((from point in Points
let c = viewport.WorldToScreen(point.Coordinate)
where c != null && c.Z <= 1
where p.X >= c.X - d && p.X <= c.X + d && p.Y >= c.Y - d && p.Y <= c.Y + d
orderby(pos - point.Coordinate).LengthSquared()
select point).ToList());
}
private Matrix4?GetTransformationMatrix(Viewport3D viewport)
{
if (_mouseMovePoint == null || _mouseDownPoint == null || _pivotPoint == null)
{
return(null);
}
var originPoint = viewport.WorldToScreen(_pivotPoint);
var origv = (_mouseDownPoint - originPoint).Normalise();
var newv = (_mouseMovePoint - originPoint).Normalise();
var angle = DMath.Acos(Math.Max(-1, Math.Min(1, origv.Dot(newv))));
if ((origv.Cross(newv).Z < 0))
{
angle = 2 * DMath.PI - angle;
}
var shf = KeyboardState.Shift;
var def = Select.RotationStyle;
var snap = (def == RotationStyle.SnapOnShift && shf) || (def == RotationStyle.SnapOffShift && !shf);
if (snap)
{
var deg = angle * (180 / DMath.PI);
var rnd = Math.Round(deg / 15) * 15;
angle = rnd * (DMath.PI / 180);
}
Vector3 axis;
var dir = (viewport.Camera.Location - _pivotPoint.ToVector3()).Normalized();
switch (_mouseDown)
{
case CircleType.Outer:
axis = dir;
break;
case CircleType.X:
axis = Vector3.UnitX;
break;
case CircleType.Y:
axis = Vector3.UnitY;
break;
case CircleType.Z:
axis = Vector3.UnitZ;
break;
default:
return(null);
}
var dirAng = Math.Acos(Vector3.Dot(dir, axis)) * 180 / Math.PI;
if (dirAng > 90)
{
angle = -angle;
}
var rotm = Matrix4.CreateFromAxisAngle(axis, (float)angle);
var mov = Matrix4.CreateTranslation(-_pivotPoint.ToVector3());
var rot = Matrix4.Mult(mov, rotm);
return(Matrix4.Mult(rot, Matrix4.Invert(mov)));
}
protected override void Render3D(Viewport3D vp)
{
base.Render3D(vp);
if (_currentTool != null)
{
_currentTool.Render3D(vp);
}
TextureHelper.Unbind();
if (_currentTool == null || _currentTool.DrawVertices())
{
// Get us into 2D rendering
Matrix.Set(MatrixMode.Projection);
Matrix.Identity();
Graphics.Helpers.Viewport.Orthographic(0, 0, vp.Width, vp.Height);
Matrix.Set(MatrixMode.Modelview);
Matrix.Identity();
var half = new Coordinate(vp.Width, vp.Height, 0) / 2;
// Render out the point handles
GL.Begin(PrimitiveType.Quads);
foreach (var point in Points)
{
if (point.IsMidPoint && _showPoints == ShowPoints.Vertices)
{
continue;
}
if (!point.IsMidPoint && _showPoints == ShowPoints.Midpoints)
{
continue;
}
var c = vp.WorldToScreen(point.Coordinate);
if (c == null || c.Z > 1)
{
continue;
}
c -= half;
GL.Color3(Color.Black);
GL.Vertex2(c.DX - 4, c.DY - 4);
GL.Vertex2(c.DX - 4, c.DY + 4);
GL.Vertex2(c.DX + 4, c.DY + 4);
GL.Vertex2(c.DX + 4, c.DY - 4);
GL.Color3(point.GetColour());
GL.Vertex2(c.DX - 3, c.DY - 3);
GL.Vertex2(c.DX - 3, c.DY + 3);
GL.Vertex2(c.DX + 3, c.DY + 3);
GL.Vertex2(c.DX + 3, c.DY - 3);
}
GL.End();
// Get back into 3D rendering
Matrix.Set(MatrixMode.Projection);
Matrix.Identity();
Graphics.Helpers.Viewport.Perspective(0, 0, vp.Width, vp.Height, View.CameraFOV);
Matrix.Set(MatrixMode.Modelview);
Matrix.Identity();
vp.Camera.Position();
}
var type = vp.Type;
bool shaded = type == Viewport3D.ViewType.Shaded || type == Viewport3D.ViewType.Textured,
textured = type == Viewport3D.ViewType.Textured,
wireframe = type == Viewport3D.ViewType.Wireframe;
// Render out the solid previews
GL.Color3(Color.White);
var faces = _copies.Keys.SelectMany(x => x.Faces).ToList();
if (!wireframe)
{
if (shaded)
{
MapObjectRenderer.EnableLighting();
}
GL.Enable(EnableCap.Texture2D);
MapObjectRenderer.DrawFilled(faces.Where(x => !x.IsSelected), Color.FromArgb(255, 64, 192, 64), textured);
MapObjectRenderer.DrawFilled(faces.Where(x => x.IsSelected), Color.FromArgb(255, 255, 128, 128), textured);
GL.Disable(EnableCap.Texture2D);
MapObjectRenderer.DisableLighting();
GL.Color3(Color.Pink);
MapObjectRenderer.DrawWireframe(faces, true, false);
}
else
{
GL.Color4(Color.FromArgb(255, 64, 192, 64));
MapObjectRenderer.DrawWireframe(faces.Where(x => !x.IsSelected), true, false);
GL.Color4(Color.FromArgb(255, 255, 128, 128));
MapObjectRenderer.DrawWireframe(faces.Where(x => x.IsSelected), true, false);
}
}
