Lines Matching refs:y_1
506 DrawArc (DviWidget dw, int x_0, int y_0, int x_1, int y_1)
510 + sqrt ((double)x_1*x_1 + (double)y_1*y_1)
512 if ((x_0 == 0 && y_0 == 0) || (x_1 == 0 && y_1 == 0))
515 angle2 = (int)(atan2 ((double)-y_1, (double)x_1)*180.0*64.0/M_PI);
609 int x_1, y_1, dx, dy, n1, n2, n;
612 y_1 = points[*pointi - 1].y;
615 dy = y_4 - y_1;
617 n1 = dy*(x_2 - x_1) - dx*(y_2 - y_1);
618 n2 = dy*(x_3 - x_1) - dx*(y_3 - y_1);
630 (y_1 + y_2)/2,
632 (y_1 + y_2*2 + y_3)/4,
634 (y_1 + 3*y_2 + 3*y_3 + y_4)/8);