Cross Reference: /ast/src/lib/libtk/generic/tkTrig.c

Lines Matching refs:p2
1316 TkGetMiterPoints(p1, p2, p3, width, m1, m2)
1319     double p2[];		/* Points to x- and y-coordinates of vertex
1325 				 * point (see as you face from p1 to p2). */
1329     double theta1;		/* Angle of segment p2-p1. */
1330     double theta2;		/* Angle of segment p2-p3. */
1335     double dist;		/* Distance of miter points from p2. */
1341     if (p2[1] == p1[1]) {
1342 	theta1 = (p2[0] < p1[0]) ? 0 : PI;
1343     } else if (p2[0] == p1[0]) {
1344 	theta1 = (p2[1] < p1[1]) ? PI/2.0 : -PI/2.0;
1346 	theta1 = atan2(p1[1] - p2[1], p1[0] - p2[0]);
1348     if (p3[1] == p2[1]) {
1349 	theta2 = (p3[0] > p2[0]) ? 0 : PI;
1350     } else if (p3[0] == p2[0]) {
1351 	theta2 = (p3[1] > p2[1]) ? PI/2.0 : -PI/2.0;
1353 	theta2 = atan2(p3[1] - p2[1], p3[0] - p2[0]);
1371      * looking from p1 to p2).
1379     m1[0] = p2[0] + deltaX;
1380     m2[0] = p2[0] - deltaX;
1382     m1[1] = p2[1] + deltaY;
1383     m2[1] = p2[1] - deltaY;
1403  *		p1 *---------------* p2
1407  *	M1 and m2 will be W units apart, with p2 centered between
1408  *	them and m1-m2 perpendicular to p1-p2.  However, if
1412  *				  p2  |
1417  *	In this case p2 will be width/2 units from the segment m1-m2.
1426 TkGetButtPoints(p1, p2, width, project, m1, m2)
1429     double p2[];		/* Points to x- and y-coordinates of vertex
1432     int project;		/* Non-zero means project p2 by an additional
1435 				 * point, as you face from p1 to p2. */
1439     double length;		/* Length of p1-p2 segment. */
1443     length = hypot(p2[0] - p1[0], p2[1] - p1[1]);
1445 	m1[0] = m2[0] = p2[0];
1446 	m1[1] = m2[1] = p2[1];
1448 	deltaX = -width * (p2[1] - p1[1]) / length;
1449 	deltaY = width * (p2[0] - p1[0]) / length;
1450 	m1[0] = p2[0] + deltaX;
1451 	m2[0] = p2[0] - deltaX;
1452 	m1[1] = p2[1] + deltaY;
1453 	m2[1] = p2[1] - deltaY;