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https://github.com/GLEGram/GLEGram-iOS.git
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Leeksov
4647310322
Based on Swiftgram 12.5 (Telegram iOS 12.5). All GLEGram features ported and organized in GLEGram/ folder. Features: Ghost Mode, Saved Deleted Messages, Content Protection Bypass, Font Replacement, Fake Profile, Chat Export, Plugin System, and more. See CHANGELOG_12.5.md for full details.
83 lines
2.1 KiB
Plaintext
83 lines
2.1 KiB
Plaintext
/**
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Copyright (c) 2014-present, Facebook, Inc.
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All rights reserved.
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This source code is licensed under the BSD-style license found in the
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LICENSE file in the root directory of this source tree. An additional grant
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of patent rights can be found in the PATENTS file in the same directory.
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*/
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#import "POPMath.h"
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#import "UnitBezier.h"
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#import "POPAnimationPrivate.h"
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void POPInterpolateVector(NSUInteger count, CGFloat *dst, const CGFloat *from, const CGFloat *to, CGFloat f)
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{
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for (NSUInteger idx = 0; idx < count; idx++) {
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dst[idx] = MIX(from[idx], to[idx], f);
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}
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}
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double POPTimingFunctionSolve(const double vec[4], double t, double eps)
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{
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WebCore::UnitBezier bezier(vec[0], vec[1], vec[2], vec[3]);
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return bezier.solve(t, eps);
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}
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double POPNormalize(double value, double startValue, double endValue)
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{
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return (value - startValue) / (endValue - startValue);
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}
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double POPProjectNormal(double n, double start, double end)
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{
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return start + (n * (end - start));
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}
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static double linear_interpolation(double t, double start, double end)
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{
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return t * end + (1.f - t) * start;
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}
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double POPQuadraticOutInterpolation(double t, double start, double end)
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{
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return linear_interpolation(2*t - t*t, start, end);
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}
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static double b3_friction1(double x)
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{
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return (0.0007 * pow(x, 3)) - (0.031 * pow(x, 2)) + 0.64 * x + 1.28;
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}
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static double b3_friction2(double x)
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{
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return (0.000044 * pow(x, 3)) - (0.006 * pow(x, 2)) + 0.36 * x + 2.;
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}
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static double b3_friction3(double x)
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{
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return (0.00000045 * pow(x, 3)) - (0.000332 * pow(x, 2)) + 0.1078 * x + 5.84;
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}
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double POPBouncy3NoBounce(double tension)
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{
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double friction = 0;
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if (tension <= 18.) {
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friction = b3_friction1(tension);
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} else if (tension > 18 && tension <= 44) {
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friction = b3_friction2(tension);
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} else if (tension > 44) {
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friction = b3_friction3(tension);
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} else {
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assert(false);
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}
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return friction;
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}
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void POPQuadraticSolve(CGFloat a, CGFloat b, CGFloat c, CGFloat &x1, CGFloat &x2)
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{
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CGFloat discriminant = sqrt(b * b - 4 * a * c);
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x1 = (-b + discriminant) / (2 * a);
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x2 = (-b - discriminant) / (2 * a);
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}
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