| // Copyright 2018 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef SRC_UI_LIB_ESCHER_MATH_LERP_H_ |
| #define SRC_UI_LIB_ESCHER_MATH_LERP_H_ |
| |
| namespace escher { |
| |
| // Linearly interpolate between the two values. ValT can be any type that |
| // supports addition, as well as multiplication by a scalar. |
| template <typename ValT> |
| ValT Lerp(const ValT& a, const ValT& b, float t) { |
| return b * t + a * (1.f - t); |
| } |
| |
| } // namespace escher |
| |
| #endif // SRC_UI_LIB_ESCHER_MATH_LERP_H_ |
