/*
- * Copyright (c) 2022 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2023 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* limitations under the License.
*/
+#include <dali/internal/common/matrix-utils.h>
#include <dali/internal/event/actors/actor-coords.h>
#include <dali/internal/event/common/event-thread-services.h>
#include <dali/internal/event/common/projection.h>
namespace Dali::Internal
{
+namespace
+{
+/**
+ * @brief Get the Viewport Extents from RenderTask
+ *
+ * @param[in] renderTask RenderTask what we want to get viewport.
+ * @param[out] viewportExtent Calculated extent by renderTask.
+ * @return True if we success to get viewports. False otherwise
+ */
+bool GetViewportExtentsFromRenderTask(const RenderTask& renderTask, Rect<float>& viewportExtent)
+{
+ if(renderTask.GetFrameBuffer())
+ {
+ Dali::Actor mappingActor = renderTask.GetScreenToFrameBufferMappingActor();
+ if(mappingActor)
+ {
+ // NOTE : We will assume that mapping actor always use default camera.
+ Vector2 screenPosition = mappingActor.GetProperty<Vector2>(Dali::Actor::Property::SCREEN_POSITION);
+ Vector3 size = mappingActor.GetCurrentProperty<Vector3>(Dali::Actor::Property::SIZE) * mappingActor.GetCurrentProperty<Vector3>(Dali::Actor::Property::WORLD_SCALE);
+ Vector3 anchorPointOffSet = size * GetImplementation(mappingActor).GetAnchorPointForPosition();
+ Vector2 position = Vector2(screenPosition.x - anchorPointOffSet.x, screenPosition.y - anchorPointOffSet.y);
+ viewportExtent.x = position.x;
+ viewportExtent.y = position.y;
+ viewportExtent.width = size.x;
+ viewportExtent.height = size.y;
+ }
+ else
+ {
+ return false;
+ }
+ }
+ else
+ {
+ Viewport viewport;
+ renderTask.GetViewport(viewport);
+ viewportExtent.x = viewport.x;
+ viewportExtent.y = viewport.y;
+ viewportExtent.width = viewport.width;
+ viewportExtent.height = viewport.height;
+ }
+ return true;
+}
+
+/**
+ * @brief Get the Orientation from Forward vector and Up vector
+ * If vectors are valid, return Quaternion to make forward direction as +Z, and up direction near as -Y axis.
+ * If some invalid vector inputed (like Zero length, or parallel vector), return identity quaternion
+ *
+ * @param[in] forward The vector that want to be +Z axis.
+ * @param[in] up The vector that want to be -Y axis.
+ * @return Quaternion to make forward direction as +Z, and up direction near as -Y axis.
+ */
+Quaternion GetOrientationFromForwardAndUpVector(Vector3 forward, Vector3 up)
+{
+ Vector3 vZ = forward;
+ vZ.Normalize();
+
+ Vector3 vX = up.Cross(vZ);
+ vX.Normalize();
+
+ // If something invalid input comes, vX length become zero.
+ if(DALI_UNLIKELY(Dali::EqualsZero(vX.Length())))
+ {
+ DALI_LOG_ERROR("Invalid value inputed, forward : %f %f %f , up : %f %f %f\n", forward.x, forward.y, forward.z, up.x, up.y, up.z);
+ return Quaternion();
+ }
+
+ Vector3 vY = vZ.Cross(vX);
+ vY.Normalize();
+
+ return Quaternion(vX, vY, vZ);
+}
+
+// Common API for calculating screen position
+
+/**
+ * @brief Retrieve actor's world position by Event related properties after calculating the world transform matrix.
+ *
+ * @param[in] actor The actor that wants to get WorldPosition
+ * @param[out] worldTransformMatrix Calculated world matrix as output. We can reuse this value in other logics.
+ * @return Calculated world position
+ */
+Vector3 RetrieveCalculatedWorldPosition(const Actor& actor, Matrix& worldTransformMatrix)
+{
+ worldTransformMatrix = Dali::Internal::CalculateActorWorldTransform(actor);
+
+ Scene& scene = actor.GetScene();
+
+ Vector3 worldPosition = worldTransformMatrix.GetTranslation3();
+ Vector3 cameraPosition = Dali::Internal::CalculateActorWorldTransform(scene.GetDefaultCameraActor()).GetTranslation3();
+ worldPosition -= cameraPosition;
+
+ return worldPosition;
+}
+
+/**
+ * @brief Calculate actor's current world position by Update related properties.
+ *
+ * @param[in] actor The actor that wants to get WorldPosition
+ * @param[in] bufferIndex Buffer index of update
+ * @return Calculated world position
+ */
+Vector3 CalculateCurrentWorldPosition(const Actor& actor, BufferIndex bufferIndex)
+{
+ Scene& scene = actor.GetScene();
+
+ Vector3 worldPosition = actor.GetNode().GetWorldPosition(bufferIndex);
+ Vector3 cameraPosition = scene.GetDefaultCameraActor().GetNode().GetWorldPosition(bufferIndex);
+ worldPosition -= cameraPosition;
+
+ return worldPosition;
+}
+
+/**
+ * @brief Calculate actor's scaled size by world scale.
+ *
+ * @param[in] actor The actor that wants to get scaled size
+ * @param[in] worldTransformMatrix The actor's world matrix
+ * @return The size scaled by world scale
+ */
+Vector3 CalculateScaledActorSize(const Actor& actor, const Matrix& worldTransformMatrix)
+{
+ return actor.GetTargetSize() * worldTransformMatrix.GetScale();
+}
+
+/**
+ * @brief Calculate actor's current scaled size by world scale.
+ *
+ * @param[in] actor The actor that wants to get scaled size
+ * @param[in] bufferIndex Buffer index of update
+ * @return The size scaled by world scale
+ */
+Vector3 CalculateCurrentScaledActorSize(const Actor& actor, BufferIndex bufferIndex)
+{
+ auto& node = actor.GetNode();
+ return node.GetSize(bufferIndex) * node.GetWorldScale(bufferIndex);
+}
+
+/**
+ * @brief Calculate screen extents top-left point position
+ *
+ * @param[in] sceneSize The scene size
+ * @param[in] actorSize The actor size
+ * @param[in] worldPosition The actor's world position
+ * @return The size scaled by world scale
+ */
+template<typename SceneSizeType, typename ActorSizeType, typename WorldPositionType>
+Vector2 CalculateActorTopLeftScreenPosition(const SceneSizeType& sceneSize, const ActorSizeType& actorSize, const WorldPositionType& worldPosition)
+{
+ const Vector2 halfSceneSize(sceneSize.width * 0.5f, sceneSize.height * 0.5f);
+ const Vector2 halfActorSize(actorSize.width * 0.5f, actorSize.height * 0.5f);
+
+ return Vector2(halfSceneSize.width - halfActorSize.width + worldPosition.x, halfSceneSize.height - halfActorSize.height + worldPosition.y);
+}
+} // namespace
+
bool ConvertScreenToLocal(
const Matrix& viewMatrix,
const Matrix& projectionMatrix,
{
// Get the ModelView matrix
Matrix modelView;
- Matrix::Multiply(modelView, worldMatrix, viewMatrix);
+ MatrixUtils::MultiplyTransformMatrix(modelView, worldMatrix, viewMatrix);
// Calculate the inverted ModelViewProjection matrix; this will be used for 2 unprojects
Matrix invertedMvp(false /*don't init*/);
- Matrix::Multiply(invertedMvp, modelView, projectionMatrix);
+ MatrixUtils::MultiplyProjectionMatrix(invertedMvp, modelView, projectionMatrix);
bool success = invertedMvp.Invert();
// Convert to GL coordinates
}
}
return false;
-};
+}
-const Vector2 CalculateActorScreenPosition(const Actor& actor, BufferIndex bufferIndex)
+const Vector2 CalculateActorScreenPosition(const Actor& actor)
{
- Scene& scene = actor.GetScene();
+ Vector2 result;
if(actor.OnScene())
{
- const auto& node = actor.GetNode();
- Vector3 worldPosition = node.GetWorldPosition(bufferIndex);
- Vector3 cameraPosition = scene.GetDefaultCameraActor().GetNode().GetWorldPosition(bufferIndex);
- worldPosition -= cameraPosition;
-
- Vector3 actorSize = node.GetSize(bufferIndex) * node.GetWorldScale(bufferIndex);
- auto sceneSize = scene.GetCurrentSurfaceRect(); // Use the update object's size
- Vector2 halfSceneSize(sceneSize.width * 0.5f, sceneSize.height * 0.5f); // World position origin is center of scene
- Vector3 halfActorSize(actorSize * 0.5f);
- Vector3 anchorPointOffSet = halfActorSize - actorSize * actor.GetAnchorPointForPosition();
- return Vector2(halfSceneSize.width + worldPosition.x - anchorPointOffSet.x,
- halfSceneSize.height + worldPosition.y - anchorPointOffSet.y);
+ Matrix worldTransformMatrix(false); // Do not initialize. It will be calculated in RetrieveCalculatedWorldPosition API.
+
+ Vector3 worldPosition = RetrieveCalculatedWorldPosition(actor, worldTransformMatrix);
+ Vector3 actorSize = CalculateScaledActorSize(actor, worldTransformMatrix);
+
+ auto sceneSize = actor.GetScene().GetSize();
+
+ Vector2 screenPositionTopLeft = CalculateActorTopLeftScreenPosition(sceneSize, actorSize, worldPosition);
+ Vector2 anchorPointOffSet = (actorSize * actor.GetAnchorPointForPosition()).GetVectorXY();
+
+ result = screenPositionTopLeft + anchorPointOffSet;
}
- return Vector2::ZERO;
+ return result;
}
-Rect<> CalculateActorScreenExtents(const Actor& actor, const Vector2& screenPosition, BufferIndex bufferIndex)
+const Vector2 CalculateCurrentActorScreenPosition(const Actor& actor, BufferIndex bufferIndex)
{
- const auto& node = actor.GetNode();
- Vector3 size = node.GetSize(bufferIndex) * node.GetWorldScale(bufferIndex);
- Vector3 anchorPointOffSet = size * actor.GetAnchorPointForPosition();
- Vector2 position = Vector2(screenPosition.x - anchorPointOffSet.x, screenPosition.y - anchorPointOffSet.y);
- return {position.x, position.y, size.x, size.y};
+ Vector2 result;
+ if(actor.OnScene())
+ {
+ Vector3 worldPosition = CalculateCurrentWorldPosition(actor, bufferIndex);
+ Vector3 actorSize = CalculateCurrentScaledActorSize(actor, bufferIndex);
+
+ auto sceneSize = actor.GetScene().GetCurrentSurfaceRect(); // Use the update object's size
+
+ Vector2 screenPositionTopLeft = CalculateActorTopLeftScreenPosition(sceneSize, actorSize, worldPosition);
+ Vector2 anchorPointOffSet = (actorSize * actor.GetAnchorPointForPosition()).GetVectorXY();
+
+ result = screenPositionTopLeft + anchorPointOffSet;
+ }
+ return result;
+}
+
+Rect<> CalculateActorScreenExtents(const Actor& actor)
+{
+ Vector2 position2;
+ Vector2 size2;
+ if(actor.OnScene())
+ {
+ Matrix worldTransformMatrix(false); // Do not initialize. It will be calculated in RetrieveCalculatedWorldPosition API.
+
+ Vector3 worldPosition = RetrieveCalculatedWorldPosition(actor, worldTransformMatrix);
+ Vector3 actorSize = CalculateScaledActorSize(actor, worldTransformMatrix);
+
+ auto sceneSize = actor.GetScene().GetSize();
+
+ position2 = CalculateActorTopLeftScreenPosition(sceneSize, actorSize, worldPosition);
+ size2 = Vector2(actorSize.width, actorSize.height);
+ }
+ return {position2.x, position2.y, size2.x, size2.y};
+}
+
+Rect<> CalculateCurrentActorScreenExtents(const Actor& actor, BufferIndex bufferIndex)
+{
+ Vector2 position2;
+ Vector2 size2;
+ if(actor.OnScene())
+ {
+ Vector3 worldPosition = CalculateCurrentWorldPosition(actor, bufferIndex);
+ Vector3 actorSize = CalculateCurrentScaledActorSize(actor, bufferIndex);
+
+ auto sceneSize = actor.GetScene().GetCurrentSurfaceRect(); // Use the update object's size
+
+ position2 = CalculateActorTopLeftScreenPosition(sceneSize, actorSize, worldPosition);
+ size2 = Vector2(actorSize.width, actorSize.height);
+ }
+ return {position2.x, position2.y, size2.x, size2.y};
+}
+
+bool ConvertLocalToScreen(
+ const Matrix& viewMatrix,
+ const Matrix& projectionMatrix,
+ const Matrix& worldMatrix,
+ const Rect<>& viewportExtent,
+ const Vector3& localPosition,
+ float& screenX,
+ float& screenY)
+{
+ bool success = false;
+
+ // Convert local to projection coordinates
+ // note, P*(V*(M*pos))) is faster than (P*V*M)*pos
+ Vector4 mvpPos(localPosition.x, localPosition.y, localPosition.z, 1.0f);
+
+ mvpPos = worldMatrix * mvpPos;
+ mvpPos = viewMatrix * mvpPos;
+ mvpPos = projectionMatrix * mvpPos;
+
+ if(DALI_LIKELY(!EqualsZero(mvpPos.w)))
+ {
+ success = true;
+ screenX = viewportExtent.x + (mvpPos.x + mvpPos.w) * viewportExtent.width * 0.5f / mvpPos.w;
+ screenY = viewportExtent.y + (-mvpPos.y + mvpPos.w) * viewportExtent.height * 0.5f / mvpPos.w;
+ }
+ return success;
+}
+
+bool ConvertLocalToScreenRenderTask(
+ const RenderTask& renderTask,
+ const Actor& actor,
+ const Matrix& worldMatrix,
+ const Vector3& localPosition,
+ float& screenX,
+ float& screenY)
+{
+ bool success = false;
+ const Actor* sourceActor = renderTask.GetSourceActor();
+ if(sourceActor == nullptr)
+ {
+ return success;
+ }
+
+ // Check whether current actor is in this rendertask.
+ bool actorInRendertask = false;
+ const Actor* targetActor = &actor;
+ while(targetActor)
+ {
+ if(sourceActor == targetActor)
+ {
+ actorInRendertask = true;
+ break;
+ }
+ targetActor = targetActor->GetParent();
+ }
+ if(!actorInRendertask)
+ {
+ return success;
+ }
+
+ CameraActor* camera = renderTask.GetCameraActor();
+ if(camera)
+ {
+ Rect<float> viewportExtent = {0.f, 0.f, 0.f, 0.f};
+ if(!GetViewportExtentsFromRenderTask(renderTask, viewportExtent))
+ {
+ return success;
+ }
+
+ if(ConvertLocalToScreen(camera->GetViewMatrix(), camera->GetProjectionMatrix(), worldMatrix, viewportExtent, localPosition, screenX, screenY))
+ {
+ success = true;
+ }
+ }
+ return success;
+}
+
+bool ConvertLocalToScreenRenderTaskList(
+ const RenderTaskList& renderTaskList,
+ const Actor& actor,
+ const Matrix& worldMatrix,
+ const Vector3& localPosition,
+ float& screenX,
+ float& screenY)
+{
+ // do a reverse traversal of all lists (as the default onscreen one is typically the last one)
+ uint32_t taskCount = renderTaskList.GetTaskCount();
+ for(uint32_t i = taskCount; i > 0; --i)
+ {
+ RenderTaskPtr task = renderTaskList.GetTask(i - 1);
+ if(ConvertLocalToScreenRenderTask(*task, actor, worldMatrix, localPosition, screenX, screenY))
+ {
+ // found a task where this conversion was ok so return
+ return true;
+ }
+ }
+ return false;
+}
+
+const Vector2 CalculateActorScreenPositionRenderTaskList(const Actor& actor)
+{
+ Vector2 result;
+ if(actor.OnScene())
+ {
+ auto worldMatrix = Dali::Internal::CalculateActorWorldTransform(actor);
+ const auto& renderTaskList = actor.GetScene().GetRenderTaskList();
+
+ ConvertLocalToScreenRenderTaskList(renderTaskList, actor, worldMatrix, actor.GetTargetSize() * (actor.GetAnchorPointForPosition() - Vector3(0.5f, 0.5f, 0.5f)), result.x, result.y);
+ }
+ return result;
+}
+
+const Vector2 CalculateCurrentActorScreenPositionRenderTaskList(const Actor& actor, BufferIndex bufferIndex)
+{
+ Vector2 result;
+ if(actor.OnScene())
+ {
+ const auto& node = actor.GetNode();
+ const auto& worldMatrix = node.GetWorldMatrix(bufferIndex);
+ const auto& renderTaskList = actor.GetScene().GetRenderTaskList();
+
+ ConvertLocalToScreenRenderTaskList(renderTaskList, actor, worldMatrix, node.GetSize(bufferIndex) * (actor.GetAnchorPointForPosition() - Vector3(0.5f, 0.5f, 0.5f)), result.x, result.y);
+ }
+ return result;
+}
+
+bool ConvertLocalToScreenExtentRenderTask(
+ const RenderTask& renderTask,
+ const Actor& actor,
+ const Matrix& worldMatrix,
+ const Vector3& currentSize,
+ Rect<>& screenExtent)
+{
+ bool success = false;
+ const Actor* sourceActor = renderTask.GetSourceActor();
+ if(sourceActor == nullptr)
+ {
+ return success;
+ }
+
+ // Check whether current actor is in this rendertask.
+ bool actorInRendertask = false;
+ const Actor* targetActor = &actor;
+ while(targetActor)
+ {
+ if(sourceActor == targetActor)
+ {
+ actorInRendertask = true;
+ break;
+ }
+ targetActor = targetActor->GetParent();
+ }
+ if(!actorInRendertask)
+ {
+ return success;
+ }
+
+ CameraActor* camera = renderTask.GetCameraActor();
+ if(camera)
+ {
+ Rect<float> viewportExtent = {0.f, 0.f, 0.f, 0.f};
+ if(!GetViewportExtentsFromRenderTask(renderTask, viewportExtent))
+ {
+ return success;
+ }
+
+ constexpr uint32_t BOX_POINT_COUNT = 8;
+ const Vector3 BBOffset[BOX_POINT_COUNT] = {
+ Vector3(-currentSize.width * 0.5f, -currentSize.height * 0.5f, -currentSize.depth * 0.5f),
+ Vector3(-currentSize.width * 0.5f, currentSize.height * 0.5f, -currentSize.depth * 0.5f),
+ Vector3(currentSize.width * 0.5f, -currentSize.height * 0.5f, -currentSize.depth * 0.5f),
+ Vector3(currentSize.width * 0.5f, currentSize.height * 0.5f, -currentSize.depth * 0.5f),
+ Vector3(-currentSize.width * 0.5f, -currentSize.height * 0.5f, currentSize.depth * 0.5f),
+ Vector3(-currentSize.width * 0.5f, currentSize.height * 0.5f, currentSize.depth * 0.5f),
+ Vector3(currentSize.width * 0.5f, -currentSize.height * 0.5f, currentSize.depth * 0.5f),
+ Vector3(currentSize.width * 0.5f, currentSize.height * 0.5f, currentSize.depth * 0.5f),
+ };
+
+ float minScreenX = 0.0f;
+ float minScreenY = 0.0f;
+ float maxScreenX = 0.0f;
+ float maxScreenY = 0.0f;
+
+ const auto& viewMatrix = camera->GetViewMatrix();
+ const auto& projectionMatrix = camera->GetProjectionMatrix();
+
+ success = ConvertLocalToScreen(viewMatrix, projectionMatrix, worldMatrix, viewportExtent, BBOffset[0], minScreenX, minScreenY);
+ if(success)
+ {
+ maxScreenX = minScreenX;
+ maxScreenY = minScreenY;
+ for(uint32_t i = 1; i < BOX_POINT_COUNT; ++i)
+ {
+ float screenX = 0.0f;
+ float screenY = 0.0f;
+ Vector3 localPosition = BBOffset[i];
+ if(DALI_UNLIKELY(!ConvertLocalToScreen(viewMatrix, projectionMatrix, worldMatrix, viewportExtent, localPosition, screenX, screenY)))
+ {
+ success = false;
+ break;
+ }
+ minScreenX = std::min(minScreenX, screenX);
+ maxScreenX = std::max(maxScreenX, screenX);
+ minScreenY = std::min(minScreenY, screenY);
+ maxScreenY = std::max(maxScreenY, screenY);
+ }
+ if(success)
+ {
+ screenExtent.x = minScreenX;
+ screenExtent.y = minScreenY;
+ screenExtent.width = maxScreenX - minScreenX;
+ screenExtent.height = maxScreenY - minScreenY;
+ }
+ }
+ }
+ return success;
+}
+
+bool ConvertLocalToScreenExtentRenderTaskList(
+ const RenderTaskList& renderTaskList,
+ const Actor& actor,
+ const Matrix& worldMatrix,
+ const Vector3& currentSize,
+ Rect<>& screenExtent)
+{
+ // do a reverse traversal of all lists (as the default onscreen one is typically the last one)
+ uint32_t taskCount = renderTaskList.GetTaskCount();
+ for(uint32_t i = taskCount; i > 0; --i)
+ {
+ RenderTaskPtr task = renderTaskList.GetTask(i - 1);
+ if(ConvertLocalToScreenExtentRenderTask(*task, actor, worldMatrix, currentSize, screenExtent))
+ {
+ // found a task where this conversion was ok so return
+ return true;
+ }
+ }
+ return false;
+}
+
+Rect<> CalculateActorScreenExtentsRenderTaskList(const Actor& actor)
+{
+ Rect<> result = {0.0f, 0.0f, 0.0f, 0.0f};
+
+ if(actor.OnScene())
+ {
+ Scene& scene = actor.GetScene();
+
+ auto worldMatrix = Dali::Internal::CalculateActorWorldTransform(actor);
+ const auto& renderTaskList = scene.GetRenderTaskList();
+ ConvertLocalToScreenExtentRenderTaskList(renderTaskList, actor, worldMatrix, actor.GetTargetSize(), result);
+ }
+ return result;
+}
+
+Rect<> CalculateCurrentActorScreenExtentsRenderTaskList(const Actor& actor, BufferIndex bufferIndex)
+{
+ Rect<> result = {0.0f, 0.0f, 0.0f, 0.0f};
+
+ if(actor.OnScene())
+ {
+ const auto& node = actor.GetNode();
+ const auto& worldMatrix = node.GetWorldMatrix(bufferIndex);
+ const auto& renderTaskList = actor.GetScene().GetRenderTaskList();
+
+ ConvertLocalToScreenExtentRenderTaskList(renderTaskList, actor, worldMatrix, node.GetSize(bufferIndex), result);
+ }
+ return result;
}
/**
Matrix worldMatrix;
Vector3 localPosition;
+
// descentList is leaf first, so traverse from root (end) to leaf (beginning)
- for(unsigned int i(descentList.size() - 1); i < descentList.size(); --i)
+ const size_t descentCount = descentList.size();
+ for(size_t iter = 0u; iter < descentCount; ++iter)
{
+ auto i = descentCount - iter - 1u;
Vector3 anchorPoint = descentList[i].GetProperty<Vector3>(Dali::Actor::Property::ANCHOR_POINT);
Vector3 parentOrigin = descentList[i].GetProperty<Vector3>(Dali::Actor::Property::PARENT_ORIGIN);
bool positionUsesAnchorPoint = descentList[i].GetProperty<bool>(Dali::Actor::Property::POSITION_USES_ANCHOR_POINT);
//Update the world matrix
Matrix tempMatrix;
- Matrix::Multiply(tempMatrix, localMatrix, worldMatrix);
+ MatrixUtils::MultiplyTransformMatrix(tempMatrix, localMatrix, worldMatrix);
worldMatrix = tempMatrix;
}
else
{
- Vector3 parentPosition, parentScale;
- Quaternion parentOrientation;
- worldMatrix.GetTransformComponents(parentPosition, parentOrientation, parentScale);
+ // Get Parent information.
+ Vector3 parentPosition, parentScale;
+ Quaternion parentOrientation;
+ const Matrix& parentMatrix = worldMatrix;
+ parentMatrix.GetTransformComponents(parentPosition, parentOrientation, parentScale);
+
+ // Compute intermediate Local information
+ centerPosition = CalculateCenterPosition(anchorPoint, positionUsesAnchorPoint, size, localScale, localOrientation);
+ Vector3 intermediateLocalPosition = actorPosition + centerPosition + (parentOrigin - Vector3(0.5f, 0.5f, 0.5f)) * parentSize;
+ Matrix intermediateLocalMatrix;
+ intermediateLocalMatrix.SetTransformComponents(localScale, localOrientation, intermediateLocalPosition);
+ // Compute intermediate world information
+ Matrix intermediateWorldMatrix;
+ MatrixUtils::MultiplyTransformMatrix(intermediateWorldMatrix, intermediateLocalMatrix, parentMatrix);
+
+ Vector3 intermediateWorldPosition, intermediateWorldScale;
+ Quaternion intermediateWorldOrientation;
+ intermediateWorldMatrix.GetTransformComponents(intermediateWorldPosition, intermediateWorldOrientation, intermediateWorldScale);
+
+ // Compute final world information
+ Vector3 finalWorldPosition = intermediateWorldPosition;
+ Vector3 finalWorldScale = intermediateWorldScale;
+ Quaternion finalWorldOrientation = intermediateWorldOrientation;
+ // worldScale includes the influence of local scale, local rotation, and parent scale.
+ // So, for the final world matrix, if this node inherits its parent scale, use worldScale.
+ // If not, use local scale for the final world matrix.
if((inheritanceModeList[i] & INHERIT_SCALE) == 0)
{
- //Don't inherit scale
- localScale /= parentScale;
+ finalWorldScale = localScale;
}
+ // For the final world matrix, if this node inherits its parent orientation, use worldOrientation.
+ // If not, use local orientation for the final world matrix.
if((inheritanceModeList[i] & INHERIT_ORIENTATION) == 0)
{
- //Don't inherit orientation
- parentOrientation.Invert();
- localOrientation = parentOrientation * localOrientation;
+ finalWorldOrientation = localOrientation;
}
- if((inheritanceModeList[i] & INHERIT_POSITION) == 0)
- {
- localMatrix.SetTransformComponents(localScale, localOrientation, Vector3::ZERO);
- Matrix tempMatrix;
- Matrix::Multiply(tempMatrix, localMatrix, worldMatrix);
- worldMatrix = tempMatrix;
- worldMatrix.SetTranslation(actorPosition + centerPosition);
- }
- else
+ // The final world position of this node is computed as a sum of
+ // parent origin position in world space and relative position of center from parent origin.
+ // If this node doesn't inherit its parent position, simply use the relative position as a final world position.
+ Vector3 localCenterPosition = CalculateCenterPosition(anchorPoint, positionUsesAnchorPoint, size, finalWorldScale, finalWorldOrientation);
+ finalWorldPosition = actorPosition * finalWorldScale;
+ finalWorldPosition *= finalWorldOrientation;
+ finalWorldPosition += localCenterPosition;
+ if((inheritanceModeList[i] & INHERIT_POSITION) != 0)
{
- localPosition = actorPosition + centerPosition + (parentOrigin - Vector3(0.5f, 0.5f, 0.5f)) * parentSize;
- localMatrix.SetTransformComponents(localScale, localOrientation, localPosition);
- Matrix tempMatrix;
- Matrix::Multiply(tempMatrix, localMatrix, worldMatrix);
- worldMatrix = tempMatrix;
+ Vector4 parentOriginPosition((parentOrigin - Vector3(0.5f, 0.5f, 0.5f)) * parentSize);
+ parentOriginPosition.w = 1.0f;
+ finalWorldPosition += Vector3(parentMatrix * parentOriginPosition);
}
+
+ worldMatrix.SetTransformComponents(finalWorldScale, finalWorldOrientation, finalWorldPosition);
}
}
else
currentActor = currentActor.GetParent();
} while(inheritance != Dali::ColorMode::USE_OWN_COLOR && currentActor);
- Vector4 worldColor;
- for(unsigned int i(descentList.size() - 1); i < descentList.size(); --i)
+ Vector4 worldColor;
+ const size_t descentCount = descentList.size();
+ for(size_t iter = 0u; iter < descentCount; ++iter)
{
+ auto i = descentCount - iter - 1u;
if(inheritanceModeList[i] == USE_OWN_COLOR || i == descentList.size() - 1)
{
worldColor = descentList[i].GetProperty<Vector4>(Dali::Actor::Property::COLOR);
return worldColor;
}
+Quaternion CalculateActorLookAtOrientation(const Actor& actor, Vector3 target, Vector3 up, Vector3 localForward, Vector3 localUp)
+{
+ Vector3 currentWorldPosition = Dali::Internal::CalculateActorWorldTransform(actor).GetTranslation3();
+
+ Quaternion worldToTarget = GetOrientationFromForwardAndUpVector(target - currentWorldPosition, up);
+ Quaternion worldToLocal = GetOrientationFromForwardAndUpVector(localForward, localUp);
+
+ // Rotate by this order : Local --> World --> Target
+ Quaternion ret = worldToTarget / worldToLocal;
+
+ // If we inherit orientation, get parent's world orientation, and revert it.
+ if(actor.IsOrientationInherited() && actor.GetParent())
+ {
+ // Get Parent information.
+ Vector3 parentPosition, parentScale;
+ Quaternion parentOrientation;
+ const Matrix& parentMatrix = Dali::Internal::CalculateActorWorldTransform(*actor.GetParent());
+ parentMatrix.GetTransformComponents(parentPosition, parentOrientation, parentScale);
+
+ ret = ret / parentOrientation;
+ }
+
+ return ret;
+}
+
} // namespace Dali::Internal
projects / platform / core / uifw / dali-core.git / blobdiff