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Fix viewport icon rendering on high DPI devices (#1006)

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* Clarify ViewportWorldToScreen being in widget space and add DeviceScalingFactor

* -Fix viewport icons being draw wrong on high DPI displays
-Fix loading viewport icons from absolute paths, which

* Address review feedback, fix build
This commit is contained in:
Nicholas Van Sickle
2021-05-27 16:31:30 -07:00
committed by GitHub
parent 16286fb43b
commit 5e87250f67
8 changed files with 53 additions and 20 deletions
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Code/Framework/AzToolsFramework/AzToolsFramework/Viewport/ViewportMessages.h
+5 -2
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@@ -165,15 +165,18 @@ namespace AzToolsFramework
virtual bool AngleSnappingEnabled() = 0;
/// Return the angle snapping/step size.
virtual float AngleStep() = 0;
/// Transform a point in world space to screen space coordinates.
/// Transform a point in world space to screen space coordinates in Qt Widget space.
/// Multiply by DeviceScalingFactor to get the position in viewport pixel space.
virtual AzFramework::ScreenPoint ViewportWorldToScreen(const AZ::Vector3& worldPosition) = 0;
/// Transform a point in screen space coordinates to a vector in world space based on clip space depth.
/// Transform a point from Qt widget screen space to world space based on the given clip space depth.
/// Depth specifies a relative camera depth to project in the range of [0.f, 1.f].
/// Returns the world space position if successful.
virtual AZStd::optional<AZ::Vector3> ViewportScreenToWorld(const AzFramework::ScreenPoint& screenPosition, float depth) = 0;
/// Casts a point in screen space to a ray in world space originating from the viewport camera frustum's near plane.
/// Returns a ray containing the ray's origin and a direction normal, if successful.
virtual AZStd::optional<ProjectedViewportRay> ViewportScreenToWorldRay(const AzFramework::ScreenPoint& screenPosition) = 0;
/// Gets the DPI scaling factor that translates Qt widget space into viewport pixel space.
virtual float DeviceScalingFactor() = 0;
protected:
~ViewportInteractionRequests() = default;