void FirstTransformation(Abstract3DInstance instance, double Xc, double Yc)
{
if (instance == null)
{
return;
}
TransformEngine.Scale(instance, 140, 0, 0, 0);
TransformEngine.Translate(instance, Xc, Yc, 0);
_scaleFactor = 1;
}
private void trackBar1_Scroll(object sender, EventArgs e)
{
if (_instance3D == null)
{
return;
}
const double cMin = 0.5;
const double cMax = 2;
double sf = (cMax - cMin) / Convert.ToDouble(trackBar1.Maximum - trackBar1.Minimum) * Convert.ToDouble(trackBar1.Value - trackBar1.Minimum) + cMin;
TransformEngine.Scale(_instance3D, sf / _scaleFactor, pictureBox1.Width / 2, pictureBox1.Height / 2, 0);
_scaleFactor = sf;
Render();
}
private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
{
if (_instance3D == null)
{
return;
}
if (e.Button == MouseButtons.Left)
{
PointF point = new PointF(e.X, e.Y);
const double divider = 64;
double angleXZ = (point.X - _startPoint.X) / divider;
double angleYZ = (point.Y - _startPoint.Y) / divider;
TransformEngine.RotateXZ(_instance3D, angleXZ, pictureBox1.Width / 2, 0);
TransformEngine.RotateYZ(_instance3D, angleYZ, pictureBox1.Height / 2, 0);
Render();
_startPoint = point;
}
}