VR: Rename ContentRectangle to UiElement

chrome/browser/android/vr_shell/ui_elements.cc

Index: chrome/browser/android/vr_shell/ui_elements.cc
diff --git a/chrome/browser/android/vr_shell/ui_elements.cc b/chrome/browser/android/vr_shell/ui_elements.cc
deleted file mode 100644
index c2232713ba42146ee3f8606ca9adc5d1fd339751..0000000000000000000000000000000000000000
--- a/chrome/browser/android/vr_shell/ui_elements.cc
+++ /dev/null
@@ -1,212 +0,0 @@
-// Copyright 2016 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.
-
-#include "chrome/browser/android/vr_shell/ui_elements.h"
-
-#include <limits>
-
-#include "base/logging.h"
-#include "base/time/time.h"
-#include "chrome/browser/android/vr_shell/animation.h"
-#include "chrome/browser/android/vr_shell/easing.h"
-#include "device/vr/vr_math.h"
-
-namespace vr_shell {
-
-namespace {
-
-bool GetRayPlaneDistance(const gfx::Point3F& ray_origin,
-                         const gfx::Vector3dF& ray_vector,
-                         const gfx::Point3F& plane_origin,
-                         const gfx::Vector3dF& plane_normal,
-                         float* distance) {
-  float denom = gfx::DotProduct(ray_vector, plane_normal);
-  if (denom == 0) {
-    return false;
-  }
-  gfx::Vector3dF rel = ray_origin - plane_origin;
-  *distance = -gfx::DotProduct(plane_normal, rel) / denom;
-  return true;
-}
-
-}  // namespace
-
-Transform::Transform() {
-  MakeIdentity();
-}
-
-void Transform::MakeIdentity() {
-  vr::SetIdentityM(&to_world);
-}
-
-void Transform::Rotate(const vr::Quatf& quat) {
-  // TODO(klausw): use specialized rotation code? Constructing the matrix
-  // via axis-angle quaternion is inefficient.
-  vr::Mat4f forward;
-  vr::QuatToMatrix(quat, &forward);
-  vr::MatrixMul(forward, to_world, &to_world);
-}
-
-void Transform::Rotate(const vr::RotationAxisAngle& axis_angle) {
-  Rotate(vr::QuatFromAxisAngle(axis_angle));
-}
-
-void Transform::Translate(const gfx::Vector3dF& translation) {
-  vr::TranslateM(to_world, translation, &to_world);
-}
-
-void Transform::Scale(const gfx::Vector3dF& scale) {
-  vr::ScaleM(to_world, scale, &to_world);
-}
-
-const vr::Mat4f& WorldRectangle::TransformMatrix() const {
-  return transform_.to_world;
-}
-
-gfx::Point3F WorldRectangle::GetCenter() const {
-  const gfx::Point3F kOrigin(0.0f, 0.0f, 0.0f);
-  return kOrigin + vr::GetTranslation(transform_.to_world);
-}
-
-gfx::PointF WorldRectangle::GetUnitRectangleCoordinates(
-    const gfx::Point3F& world_point) {
-  // TODO(acondor): Simplify the math in this function.
-  const vr::Mat4f& transform = transform_.to_world;
-  gfx::Vector3dF origin =
-      vr::MatrixVectorMul(transform, gfx::Vector3dF(0, 0, 0));
-  gfx::Vector3dF x_axis =
-      vr::MatrixVectorMul(transform, gfx::Vector3dF(1, 0, 0));
-  gfx::Vector3dF y_axis =
-      vr::MatrixVectorMul(transform, gfx::Vector3dF(0, 1, 0));
-  x_axis.Subtract(origin);
-  y_axis.Subtract(origin);
-  gfx::Point3F point = world_point - origin;
-  gfx::Vector3dF v_point(point.x(), point.y(), point.z());
-
-  float x = gfx::DotProduct(v_point, x_axis) / gfx::DotProduct(x_axis, x_axis);
-  float y = gfx::DotProduct(v_point, y_axis) / gfx::DotProduct(y_axis, y_axis);
-  return gfx::PointF(x, y);
-}
-
-gfx::Vector3dF WorldRectangle::GetNormal() const {
-  const gfx::Vector3dF kNormalOrig = {0.0f, 0.0f, -1.0f};
-  return vr::MatrixVectorRotate(transform_.to_world, kNormalOrig);
-}
-
-bool WorldRectangle::GetRayDistance(const gfx::Point3F& ray_origin,
-                                    const gfx::Vector3dF& ray_vector,
-                                    float* distance) const {
-  return GetRayPlaneDistance(ray_origin, ray_vector, GetCenter(), GetNormal(),
-                             distance);
-}
-
-ContentRectangle::ContentRectangle() = default;
-
-ContentRectangle::~ContentRectangle() = default;
-
-void ContentRectangle::Animate(const base::TimeTicks& time) {
-  for (auto& it : animations) {
-    Animation& animation = *it;
-    if (time < animation.start)
-      continue;
-
-    // If |from| is not specified, start at the current values.
-    if (animation.from.size() == 0) {
-      switch (animation.property) {
-        case Animation::COPYRECT:
-          animation.from.push_back(copy_rect.x());
-          animation.from.push_back(copy_rect.y());
-          animation.from.push_back(copy_rect.width());
-          animation.from.push_back(copy_rect.height());
-          break;
-        case Animation::SIZE:
-          animation.from.push_back(size.x());
-          animation.from.push_back(size.y());
-          break;
-        case Animation::SCALE:
-          animation.from.push_back(scale.x());
-          animation.from.push_back(scale.y());
-          animation.from.push_back(scale.z());
-          break;
-        case Animation::ROTATION:
-          animation.from.push_back(rotation.x);
-          animation.from.push_back(rotation.y);
-          animation.from.push_back(rotation.z);
-          animation.from.push_back(rotation.angle);
-          break;
-        case Animation::TRANSLATION:
-          animation.from.push_back(translation.x());
-          animation.from.push_back(translation.y());
-          animation.from.push_back(translation.z());
-          break;
-        case Animation::OPACITY:
-          animation.from.push_back(opacity);
-          break;
-      }
-    }
-    CHECK_EQ(animation.from.size(), animation.to.size());
-
-    std::vector<float> values(animation.from.size());
-    for (std::size_t i = 0; i < animation.from.size(); ++i) {
-      if (animation.to[i] == animation.from[i] ||
-          time >= (animation.start + animation.duration)) {
-        values[i] = animation.to[i];
-        continue;
-      }
-      double value = animation.easing->CalculateValue(
-          (time - animation.start).InMillisecondsF() /
-          animation.duration.InMillisecondsF());
-      values[i] =
-          animation.from[i] + (value * (animation.to[i] - animation.from[i]));
-    }
-    switch (animation.property) {
-      case Animation::COPYRECT:
-        CHECK_EQ(animation.from.size(), 4u);
-        copy_rect.SetRect(values[0], values[1], values[2], values[3]);
-        break;
-      case Animation::SIZE:
-        CHECK_EQ(animation.from.size(), 2u);
-        size.set_x(values[0]);
-        size.set_y(values[1]);
-        break;
-      case Animation::SCALE:
-        CHECK_EQ(animation.from.size(), 3u);
-        scale = {values[0], values[1], values[2]};
-        break;
-      case Animation::ROTATION:
-        CHECK_EQ(animation.from.size(), 4u);
-        rotation.x = values[0];
-        rotation.y = values[1];
-        rotation.z = values[2];
-        rotation.angle = values[3];
-        break;
-      case Animation::TRANSLATION:
-        CHECK_EQ(animation.from.size(), 3u);
-        translation = {values[0], values[1], values[2]};
-        break;
-      case Animation::OPACITY:
-        CHECK_EQ(animation.from.size(), 1u);
-        opacity = values[0];
-        break;
-    }
-  }
-  for (auto it = animations.begin(); it != animations.end();) {
-    const Animation& animation = **it;
-    if (time >= (animation.start + animation.duration)) {
-      it = animations.erase(it);
-    } else {
-      ++it;
-    }
-  }
-}
-
-bool ContentRectangle::IsVisible() const {
-  return visible && computed_opacity > 0.0f;
-}
-
-bool ContentRectangle::IsHitTestable() const {
-  return IsVisible() && hit_testable;
-}
-
-}  // namespace vr_shell