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();
}