private void RenderSystemAxis()
{
float nz = Camera.Frustum.NearZ;
float x = 0.05f * Width;
Vec3F pos = new Vec3F(x, Height - x, 0.0f);
Matrix4F vp = Camera.ViewMatrix * Camera.ProjectionMatrix;
pos = this.Unproject(pos, vp);
if (Camera.Frustum.IsOrtho)
{
pos = pos + Camera.LookAt;
}
else
{
pos = pos + Camera.LookAt * (Camera.NearZ * 0.1f);
}
float s;
Util.CalcAxisLengths(Camera, pos, out s);
Matrix4F scale = new Matrix4F();
scale.Scale(s * 0.3f);
Matrix4F trans = new Matrix4F(pos);
Matrix4F xform = scale * trans;
Util3D.RenderFlag = BasicRendererFlags.WireFrame | BasicRendererFlags.DisableDepthTest;
Util3D.DrawX(xform, Color.Red);
Util3D.DrawY(xform, Color.Green);
Util3D.DrawZ(xform, Color.Blue);
Matrix4F wvp = xform * vp;
if (ViewType != ViewTypes.Left && ViewType != ViewTypes.Right)
{
Vec3F xaxis = new Vec3F(1, 0, 0);
Point scPt = Project(wvp, xaxis);
GameEngine.DrawText2D("X", Util3D.CaptionFont, scPt.X, scPt.Y, Color.Red);
}
if (ViewType != ViewTypes.Top && ViewType != ViewTypes.Bottom)
{
Vec3F yaxis = new Vec3F(0, 1.6f, 0);
Point scPt = Project(wvp, yaxis);
GameEngine.DrawText2D("Y", Util3D.CaptionFont, scPt.X, scPt.Y, Color.Green);
}
if (ViewType != ViewTypes.Front && ViewType != ViewTypes.Back)
{
Vec3F zaxis = new Vec3F(0, 0, 1);
Point scPt = Project(wvp, zaxis);
GameEngine.DrawText2D("Z", Util3D.CaptionFont, scPt.X, scPt.Y, Color.Blue);
}
}
public void Render(Matrix4F normWorld, float s)
{
BasicRendererFlags solid = BasicRendererFlags.Solid | BasicRendererFlags.DisableDepthTest;
BasicRendererFlags wire = BasicRendererFlags.WireFrame | BasicRendererFlags.DisableDepthTest;
Color xcolor = (m_hitRegion == HitRegion.XAxis || m_hitRegion == HitRegion.XYSquare || m_hitRegion == HitRegion.XZSquare) ? Color.Gold : Color.Red;
Color ycolor = (m_hitRegion == HitRegion.YAxis || m_hitRegion == HitRegion.XYSquare || m_hitRegion == HitRegion.YZSquare) ? Color.Gold : Color.Green;
Color Zcolor = (m_hitRegion == HitRegion.ZAxis || m_hitRegion == HitRegion.XZSquare || m_hitRegion == HitRegion.YZSquare) ? Color.Gold : Color.Blue;
Color XYx = m_hitRegion == HitRegion.XYSquare ? Color.Gold : Color.Red;
Color XYy = m_hitRegion == HitRegion.XYSquare ? Color.Gold : Color.Green;
Color XZx = m_hitRegion == HitRegion.XZSquare ? Color.Gold : Color.Red;
Color XZz = m_hitRegion == HitRegion.XZSquare ? Color.Gold : Color.Blue;
Color YZy = m_hitRegion == HitRegion.YZSquare ? Color.Gold : Color.Green;
Color YZz = m_hitRegion == HitRegion.YZSquare ? Color.Gold : Color.Blue;
Vec3F axScale = new Vec3F(s, s, s);
Matrix4F axisXform = ComputeAxis(normWorld, axScale);
Util3D.RenderFlag = wire;
Util3D.DrawX(axisXform, xcolor);
Util3D.DrawY(axisXform, ycolor);
Util3D.DrawZ(axisXform, Zcolor);
Matrix4F arrowHead = ComputeXhead(normWorld, s);
Util3D.RenderFlag = solid;
Util3D.DrawCone(arrowHead, xcolor);
arrowHead = ComputeYhead(normWorld, s);
Util3D.DrawCone(arrowHead, ycolor);
arrowHead = ComputeZhead(normWorld, s);
Util3D.DrawCone(arrowHead, Zcolor);
Util3D.RenderFlag = wire;
// draw xy rect.
Matrix4F scale = new Matrix4F();
scale.Scale(axScale * SquareLength);
Matrix4F trans = new Matrix4F();
trans.Translation = new Vec3F(0, s * SquareLength, 0);
Matrix4F squareXform = scale * trans * normWorld;
Util3D.DrawX(squareXform, XYy);
trans.Translation = new Vec3F(s * SquareLength, 0, 0);
squareXform = scale * trans * normWorld;
Util3D.DrawY(squareXform, XYx);
// draw xz rect.
trans.Translation = new Vec3F(0, 0, s * SquareLength);
squareXform = scale * trans * normWorld;
Util3D.DrawX(squareXform, XZz);
trans.Translation = new Vec3F(s * SquareLength, 0, 0);
squareXform = scale * trans * normWorld;
Util3D.DrawZ(squareXform, XZx);
// draw yz
trans.Translation = new Vec3F(0, s * SquareLength, 0);
squareXform = scale * trans * normWorld;
Util3D.DrawZ(squareXform, YZy);
trans.Translation = new Vec3F(0, 0, s * SquareLength);
squareXform = scale * trans * normWorld;
Util3D.DrawY(squareXform, YZz);
}
