package jhpro.engine3d;


public class Volume
{

    Volume()
    {
        x_min = x_max = 0.0F;
        y_min = y_max = 0.0F;
        z_min = z_max = 0.0F;
    }

    Volume(float xmin, float xmax, float ymin, float ymax, float zmin, float zmax)
    {
        x_min = xmin;
        x_max = xmax;
        y_min = ymin;
        y_max = ymax;
        z_min = zmin;
        z_max = zmax;
    }

    public float getXLen()
    {
        return x_max - x_min;
    }

    public float getYLen()
    {
        return y_max - y_min;
    }

    public float getZLen()
    {
        return z_max - z_min;
    }

    public String toString()
    {
        String s1 = " size: (" + (x_max - x_min) + ", " + (x_max - y_min) + ", " + (z_max - z_min) + " ) \n";
        String s2 = " [ ( " + x_min + " .. " + x_max + " )," + "( " + x_min + " .. " + y_max + " )," + "( " + y_min + " .. " + y_max + " ) ] ";
        return s1 + s2;
    }

    protected static Volume determineBoundingBox(float v[], int nvert)
    {
        if(nvert <= 0)
            return new Volume();
        float xmax;
        float xmin = xmax = v[0];
        float ymax;
        float ymin = ymax = v[2];
        float zmax;
        float zmin = zmax = v[3];
        for(int i = nvert * 3; (i -= 3) > 0;)
        {
            float x = v[i];
            if(x < xmin)
                xmin = x;
            if(x > xmax)
                xmax = x;
            float y = v[i + 1];
            if(y < ymin)
                ymin = y;
            if(y > ymax)
                ymax = y;
            float z = v[i + 2];
            if(z < zmin)
                zmin = z;
            if(z > zmax)
                zmax = z;
        }

        Volume boundingVolume = new Volume(xmin, xmax, ymin, ymax, zmin, zmax);
        return boundingVolume;
    }

    float x_min;
    float x_max;
    float y_min;
    float y_max;
    float z_min;
    float z_max;
}