Lines Matching defs:a1
360 VGfloat a1, a2, b1, b2, c1, c2; /* Coefficients of line eqns */363 a1 = y2 - y1;367 r3 = a1 * x3 + b1 * y3 + c1;368 r4 = a1 * x4 + b1 * y4 + c1;432 VGfloat a1, a2, delta, delta_normalized;436 a1 = line_angle(l1);439 delta = a2 - a1;