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Wojtek Figat
182
Source/Editor/Gizmo/TransformGizmoBase.Draw.cs
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182
Source/Editor/Gizmo/TransformGizmoBase.Draw.cs
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// Copyright (c) 2012-2020 Wojciech Figat. All rights reserved.
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using FlaxEngine;
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namespace FlaxEditor.Gizmo
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{
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public partial class TransformGizmoBase
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{
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private Model _modelTranslateAxis;
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private Model _modelScaleAxis;
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private Model _modelBox;
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private Model _modelCircle;
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private MaterialInstance _materialAxisX;
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private MaterialInstance _materialAxisY;
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private MaterialInstance _materialAxisZ;
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private MaterialInstance _materialAxisFocus;
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private MaterialBase _materialWire;
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private MaterialBase _materialWireFocus;
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private void InitDrawing()
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{
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// Load content (but async - don't wait and don't block execution)
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_modelTranslateAxis = FlaxEngine.Content.LoadAsyncInternal<Model>("Editor/Gizmo/TranslateAxis");
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_modelScaleAxis = FlaxEngine.Content.LoadAsyncInternal<Model>("Editor/Gizmo/ScaleAxis");
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_modelBox = FlaxEngine.Content.LoadAsyncInternal<Model>("Editor/Gizmo/WireBox");
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_modelCircle = FlaxEngine.Content.LoadAsyncInternal<Model>("Editor/Gizmo/WireCircle");
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_materialAxisX = FlaxEngine.Content.LoadAsyncInternal<MaterialInstance>("Editor/Gizmo/MaterialAxisX");
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_materialAxisY = FlaxEngine.Content.LoadAsyncInternal<MaterialInstance>("Editor/Gizmo/MaterialAxisY");
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_materialAxisZ = FlaxEngine.Content.LoadAsyncInternal<MaterialInstance>("Editor/Gizmo/MaterialAxisZ");
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_materialAxisFocus = FlaxEngine.Content.LoadAsyncInternal<MaterialInstance>("Editor/Gizmo/MaterialAxisFocus");
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_materialWire = FlaxEngine.Content.LoadAsyncInternal<MaterialBase>("Editor/Gizmo/MaterialWire");
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_materialWireFocus = FlaxEngine.Content.LoadAsyncInternal<MaterialBase>("Editor/Gizmo/MaterialWireFocus");
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// Ensure that every asset was loaded
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if (_modelTranslateAxis == null ||
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_modelScaleAxis == null ||
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_modelBox == null ||
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_modelCircle == null ||
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_materialAxisX == null ||
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_materialAxisY == null ||
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_materialAxisZ == null ||
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_materialAxisFocus == null ||
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_materialWire == null ||
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_materialWireFocus == null
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)
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{
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// Error
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Platform.Fatal("Failed to load Transform Gizmo resources.");
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}
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}
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/// <inheritdoc />
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public override void Draw(ref RenderContext renderContext)
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{
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if (!_isActive || !IsActive)
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return;
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Matrix m1, m2, m3;
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bool isXAxis = _activeAxis == Axis.X || _activeAxis == Axis.XY || _activeAxis == Axis.ZX;
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bool isYAxis = _activeAxis == Axis.Y || _activeAxis == Axis.XY || _activeAxis == Axis.YZ;
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bool isZAxis = _activeAxis == Axis.Z || _activeAxis == Axis.YZ || _activeAxis == Axis.ZX;
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bool isCenter = _activeAxis == Axis.Center;
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// Switch mode
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const float gizmoModelsScale2RealGizmoSize = 0.075f;
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switch (_activeMode)
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{
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case Mode.Translate:
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{
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if (!_modelTranslateAxis || !_modelTranslateAxis.IsLoaded || !_modelBox || !_modelBox.IsLoaded)
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break;
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// Cache data
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Matrix.Scaling(gizmoModelsScale2RealGizmoSize, out m3);
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Matrix.Multiply(ref m3, ref _gizmoWorld, out m1);
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var axisMesh = _modelTranslateAxis.LODs[0].Meshes[0];
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var boxMesh = _modelBox.LODs[0].Meshes[0];
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var boxSize = 10.0f;
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// XY plane
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m2 = Matrix.Transformation(new Vector3(boxSize, 1.0f, boxSize), Quaternion.RotationX(Mathf.PiOverTwo), new Vector3(boxSize * 0.5f, boxSize * 0.5f, 0.0f));
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Matrix.Multiply(ref m2, ref m1, out m3);
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boxMesh.Draw(ref renderContext, _activeAxis == Axis.XY ? _materialWireFocus : _materialWire, ref m3);
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// ZX plane
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m2 = Matrix.Transformation(new Vector3(boxSize, 1.0f, boxSize), Quaternion.Identity, new Vector3(boxSize * 0.5f, 0.0f, boxSize * 0.5f));
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Matrix.Multiply(ref m2, ref m1, out m3);
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boxMesh.Draw(ref renderContext, _activeAxis == Axis.ZX ? _materialWireFocus : _materialWire, ref m3);
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// YZ plane
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m2 = Matrix.Transformation(new Vector3(boxSize, 1.0f, boxSize), Quaternion.RotationZ(Mathf.PiOverTwo), new Vector3(0.0f, boxSize * 0.5f, boxSize * 0.5f));
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Matrix.Multiply(ref m2, ref m1, out m3);
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boxMesh.Draw(ref renderContext, _activeAxis == Axis.YZ ? _materialWireFocus : _materialWire, ref m3);
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// X axis
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axisMesh.Draw(ref renderContext, isXAxis ? _materialAxisFocus : _materialAxisX, ref m1);
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// Y axis
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Matrix.RotationZ(Mathf.PiOverTwo, out m2);
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Matrix.Multiply(ref m2, ref m1, out m3);
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axisMesh.Draw(ref renderContext, isYAxis ? _materialAxisFocus : _materialAxisY, ref m3);
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// Z axis
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Matrix.RotationY(-Mathf.PiOverTwo, out m2);
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Matrix.Multiply(ref m2, ref m1, out m3);
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axisMesh.Draw(ref renderContext, isZAxis ? _materialAxisFocus : _materialAxisZ, ref m3);
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break;
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}
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case Mode.Rotate:
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{
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if (!_modelCircle || !_modelCircle.IsLoaded || !_modelBox || !_modelBox.IsLoaded)
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break;
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// Cache data
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var circleMesh = _modelCircle.LODs[0].Meshes[0];
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var boxMesh = _modelBox.LODs[0].Meshes[0];
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Matrix.Scaling(8.0f, out m3);
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Matrix.Multiply(ref m3, ref _gizmoWorld, out m1);
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// X axis
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Matrix.RotationZ(Mathf.PiOverTwo, out m2);
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Matrix.Multiply(ref m2, ref m1, out m3);
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circleMesh.Draw(ref renderContext, isXAxis ? _materialAxisFocus : _materialAxisX, ref m3);
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// Y axis
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circleMesh.Draw(ref renderContext, isYAxis ? _materialAxisFocus : _materialAxisY, ref m1);
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// Z axis
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Matrix.RotationX(-Mathf.PiOverTwo, out m2);
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Matrix.Multiply(ref m2, ref m1, out m3);
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circleMesh.Draw(ref renderContext, isZAxis ? _materialAxisFocus : _materialAxisZ, ref m3);
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// Center box
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Matrix.Scaling(gizmoModelsScale2RealGizmoSize, out m3);
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Matrix.Multiply(ref m3, ref _gizmoWorld, out m1);
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Matrix.Scaling(1.0f, out m2);
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Matrix.Multiply(ref m2, ref m1, out m3);
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boxMesh.Draw(ref renderContext, isCenter ? _materialWireFocus : _materialWire, ref m3);
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break;
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}
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case Mode.Scale:
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{
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if (!_modelScaleAxis || !_modelScaleAxis.IsLoaded || !_modelBox || !_modelBox.IsLoaded)
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break;
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// Cache data
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Matrix.Scaling(gizmoModelsScale2RealGizmoSize, out m3);
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Matrix.Multiply(ref m3, ref _gizmoWorld, out m1);
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var axisMesh = _modelScaleAxis.LODs[0].Meshes[0];
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var boxMesh = _modelBox.LODs[0].Meshes[0];
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// X axis
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Matrix.RotationY(-Mathf.PiOverTwo, out m2);
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Matrix.Multiply(ref m2, ref m1, out m3);
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axisMesh.Draw(ref renderContext, isXAxis ? _materialAxisFocus : _materialAxisX, ref m3);
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// Y axis
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Matrix.RotationX(Mathf.PiOverTwo, out m2);
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Matrix.Multiply(ref m2, ref m1, out m3);
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axisMesh.Draw(ref renderContext, isYAxis ? _materialAxisFocus : _materialAxisY, ref m3);
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// Z axis
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Matrix.RotationX(Mathf.Pi, out m2);
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Matrix.Multiply(ref m2, ref m1, out m3);
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axisMesh.Draw(ref renderContext, isZAxis ? _materialAxisFocus : _materialAxisZ, ref m3);
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// Center box
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Matrix.Scaling(10.0f, out m2);
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Matrix.Multiply(ref m2, ref m1, out m3);
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boxMesh.Draw(ref renderContext, isCenter ? _materialWireFocus : _materialWire, ref m3);
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break;
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}
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}
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}
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}
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}
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