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// Copyright 2020 The Chromium 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 THIRD_PARTY_BLINK_RENDERER_CORE_EVENTS_POINTER_EVENT_UTIL_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_EVENTS_POINTER_EVENT_UTIL_H_
#include "third_party/blink/renderer/bindings/core/v8/v8_pointer_event_init.h"
#include "third_party/blink/renderer/platform/wtf/math_extras.h"
namespace blink {
class CORE_EXPORT PointerEventUtil {
public:
PointerEventUtil() = delete;
static double AzimuthFromTilt(int32_t tilt_x_degrees, int32_t tilt_y_degrees);
static double AltitudeFromTilt(int32_t tilt_x_degrees,
int32_t tilt_y_degrees);
static int32_t TiltXFromSpherical(double azimuth_radians,
double altitude_radians);
static int32_t TiltYFromSpherical(double azimuth_radians,
double altitude_radians);
// Returns tilt in range [-90, 90] by using formula
// tilt = tilt_degrees - k*180
static int32_t TransformToTiltInValidRange(int32_t tilt_degrees);
// Returns azimuth in range [0,2*PI] by using formula
// azimuth = azimuth_radians - 2*k*PI
static double TransformToAzimuthInValidRange(double azimuth_radians);
// Returns altitude in range [0,PI/2]
// altitude = altitude_radians - k*PI/2
static double TransformToAltitudeInValidRange(double altitude_radians);
};
} // namespace blink
#endif
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