40     Point diff = {pt2.x - pt1.x, pt2.y - pt1.y};  in _lineLengthApprox()
41     if (diff.x < 0) diff.x = -diff.x;  in _lineLengthApprox()
43     return (diff.x > diff.y) ? (diff.x + diff.y * 0.375f) : (diff.y + diff.x * 0.375f);  in _lineLengthApprox()
49     Point diff = {pt2.x - pt1.x, pt2.y - pt1.y};  in _lineLength()
50     return sqrtf(diff.x * diff.x + diff.y * diff.y);  in _lineLength()
107 float atan2(float y, float x)  in atan2()  argument
109     if (y == 0.0f && x == 0.0f) return 0.0f;  in atan2()
110     auto a = std::min(fabsf(x), fabsf(y)) / std::max(fabsf(x), fabsf(y));  in atan2()
113     if (fabsf(y) > fabsf(x)) r = 1.57079637f - r;  in atan2()
114     if (x < 0) r = 3.14159274f - r;  in atan2()
202     auto tx = pt.x * m.e11 + pt.y * m.e12 + m.e13;  in operator *=()
203     auto ty = pt.x * m.e21 + pt.y * m.e22 + m.e23;  in operator *=()
204     pt.x = tx;  in operator *=()
211     auto tx = pt.x * m.e11 + pt.y * m.e12 + m.e13;  in operator *()
212     auto ty = pt.x * m.e21 + pt.y * m.e22 + m.e23;  in operator *()
224     return {-unitDir.y, unitDir.x};  in normal()
237     auto dx = ((pt2.x - pt1.x) / len) * at;  in split()
240     left.pt2.x = left.pt1.x + dx;  in split()
249     auto c = (ctrl1.x + ctrl2.x) * 0.5f;  in split()
250     left.ctrl1.x = (start.x + ctrl1.x) * 0.5f;  in split()
251     right.ctrl2.x = (ctrl2.x + end.x) * 0.5f;  in split()
252     left.start.x = start.x;  in split()
253     right.end.x = end.x;  in split()
254     left.ctrl2.x = (left.ctrl1.x + c) * 0.5f;  in split()
255     right.ctrl1.x = (right.ctrl2.x + c) * 0.5f;  in split()
256     left.end.x = right.start.x = (left.ctrl2.x + right.ctrl1.x) * 0.5f;  in split()
293     left.ctrl1.x = start.x + t * (ctrl1.x - start.x);  in split()
296     left.ctrl2.x = ctrl1.x + t * (ctrl2.x - ctrl1.x); //temporary holding spot  in split()
299     ctrl2.x = ctrl2.x + t * (end.x - ctrl2.x);  in split()
302     ctrl1.x = left.ctrl2.x + t * (ctrl2.x - left.ctrl2.x);  in split()
305     left.ctrl2.x = left.ctrl1.x + t * (left.ctrl2.x - left.ctrl1.x);  in split()
308     left.end.x = start.x = left.ctrl2.x + t * (ctrl1.x - left.ctrl2.x);  in split()
330     auto ax = start.x * it + ctrl1.x * t;  in at()
331     auto bx = ctrl1.x * it + ctrl2.x * t;  in at()
332     auto cx = ctrl2.x * it + end.x * t;  in at()
335     cur.x = ax * it + bx * t;  in at()
361 …Point pt ={a * start.x + b * ctrl1.x + c * ctrl2.x + d * end.x, a * start.y + b * ctrl1.y + c * ct…  in angle()
362     pt.x *= 3;  in angle()
365     return rad2deg(tvg::atan2(pt.y, pt.x));  in angle()