Set up CBasicViewport to draw an XYZ axis overlay in the corner

Common/Math.cpp

@@ -344,4 +344,9 @@ CMatrix4f PerspectiveMatrix(float fov, float aspect, float near, float far)
     return CMatrix4f::FromGlmMat4(glm::perspective(fov, aspect, near, far)).Transpose();
 }
 
+CMatrix4f OrthographicMatrix(float left, float right, float bottom, float top, float near, float far)
+{
+    return CMatrix4f::FromGlmMat4(glm::ortho(left, right, bottom, top, near, far)).Transpose();
+}
+
 } // End namespace

Common/Math.h

@@ -34,6 +34,8 @@ std::pair<bool,float> RayTriangleIntersection(const CRay& Ray, const CVector3f&
 
 CMatrix4f PerspectiveMatrix(float fov, float aspect, float near, float far);
 
+CMatrix4f OrthographicMatrix(float left, float right, float bottom, float top, float near, float far);
+
 // Constants
 static const float skPi = 3.14159265358979323846f;
 static const float skHalfPi = skPi / 2.f;

Core/CCamera.cpp

@@ -4,15 +4,13 @@
 #include <Common/Math.h>
 #include <gtc/matrix_transform.hpp>
 
-#define HALF_PI 1.570796371f
-
 CCamera::CCamera()
 {
     mMode = eFreeCamera;
     mPosition = CVector3f(0);
     mAspectRatio = 1.7777777f;
 
-    mYaw = -HALF_PI;
+    mYaw = -Math::skHalfPi;
     mPitch = 0.0f;
     CalculateDirection();
 
@@ -30,7 +28,7 @@ CCamera::CCamera(CVector3f Position, CVector3f)
     mMoveSpeed = 1.f; // Old: 0.01f
     mLookSpeed = 1.f; // Old: 0.003f
     mPosition = Position;
-    mYaw = -HALF_PI;
+    mYaw = -Math::skHalfPi;
     mPitch = 0.0f;
     CalculateDirection();
 }
@@ -43,8 +41,8 @@ void CCamera::Pan(float XAmount, float YAmount)
     case eFreeCamera:
     {
         CVector3f Right(
-            cos(mYaw - HALF_PI),
-            sin(mYaw - HALF_PI),
+            cos(mYaw - Math::skHalfPi),
+            sin(mYaw - Math::skHalfPi),
             0
         );
         CVector3f Up = Right.Cross(mDirection);
@@ -59,8 +57,8 @@ void CCamera::Pan(float XAmount, float YAmount)
     case eOrbitCamera:
     {
         CVector3f Right(
-            cos(mYaw - HALF_PI),
-            sin(mYaw - HALF_PI),
+            cos(mYaw - Math::skHalfPi),
+            sin(mYaw - Math::skHalfPi),
             0
         );
         CVector3f Up = Right.Cross(mDirection);
@@ -92,7 +90,7 @@ void CCamera::Zoom(float Amount)
 void CCamera::Snap(CVector3f Position)
 {
     mPosition = Position;
-    mYaw = -1.570796371f;
+    mYaw = -Math::skHalfPi;
     mPitch = 0.0f;
     mViewOutdated = true;
 }
@@ -198,7 +196,7 @@ const CMatrix4f& CCamera::ViewMatrix()
     return mCachedViewMatrix;
 }
 
-const CMatrix4f& CCamera::RotationOnlyViewMatrix()
+CMatrix4f CCamera::RotationOnlyViewMatrix()
 {
     if (mViewOutdated)
         CalculateView();
@@ -270,8 +268,8 @@ void CCamera::SetAspectRatio(float AspectRatio)
 // ************ PRIVATE ************
 void CCamera::CalculateDirection()
 {
-    if (mPitch > HALF_PI)  mPitch = HALF_PI;
-    if (mPitch < -HALF_PI) mPitch = -HALF_PI;
+    if (mPitch > Math::skHalfPi)  mPitch = Math::skHalfPi;
+    if (mPitch < -Math::skHalfPi) mPitch = -Math::skHalfPi;
 
     mDirection = CVector3f(
                  cos(mPitch) * cos(mYaw),
@@ -286,8 +284,8 @@ void CCamera::CalculateView()
     CalculateDirection();
 
     CVector3f Right(
-        cos(mYaw - HALF_PI),
-        sin(mYaw - HALF_PI),
+        cos(mYaw - Math::skHalfPi),
+        sin(mYaw - Math::skHalfPi),
         0
     );
 

Core/CCamera.h

@@ -54,7 +54,7 @@ public:
     float Pitch() const;
     float FieldOfView() const;
     const CMatrix4f& ViewMatrix();
-    const CMatrix4f& RotationOnlyViewMatrix();
+    CMatrix4f RotationOnlyViewMatrix();
     const CMatrix4f& ProjectionMatrix();
 
     // Setters

Core/CDrawUtil.cpp

@@ -107,10 +107,6 @@ void CDrawUtil::DrawLine(const CVector3f& PointA, const CVector3f& PointB, const
 {
     Init();
 
-    glLineWidth(1.f);
-    CGraphics::sMVPBlock.ModelMatrix = CMatrix4f::skIdentity;
-    CGraphics::UpdateMVPBlock();
-
     // Copy vec3s into an array to ensure they are adjacent in memory
     CVector3f Points[2] = { PointA, PointB };
     mLineVertices.BufferAttrib(ePosition, Points);

Scene/CScriptNode.cpp

@@ -168,6 +168,9 @@ void CScriptNode::DrawSelection()
 
     if (mpInstance)
     {
+        CGraphics::sMVPBlock.ModelMatrix = CMatrix4f::skIdentity;
+        CGraphics::UpdateMVPBlock();
+
         for (u32 iIn = 0; iIn < mpInstance->NumInLinks(); iIn++)
         {
             const SLink& con = mpInstance->InLink(iIn);

UI/CBasicViewport.cpp

@@ -53,7 +53,7 @@ void CBasicViewport::paintGL()
     Paint();
 
     // Finally, draw XYZ axes in the corner
-//    DrawAxes();
+    DrawAxes();
 }
 
 void CBasicViewport::resizeGL(int w, int h)
@@ -266,15 +266,17 @@ void CBasicViewport::ProcessInput(double DeltaTime)
 void CBasicViewport::DrawAxes()
 {
     // Draw 64x64 axes in lower-left corner with 8px margins
-    glViewport(8, height() - 72, 64, 64);
+    glViewport(8, 8, 64, 64);
     glEnable(GL_DEPTH_TEST);
     glClear(GL_DEPTH_BUFFER_BIT);
+    glDepthRange(0.f, 1.f);
 
-    CGraphics::sMVPBlock.ViewMatrix = CTransform4f::TranslationMatrix(CVector3f(0,2,0)).ToMatrix4f() * mCamera.RotationOnlyViewMatrix();
-    CGraphics::sMVPBlock.ProjectionMatrix = Math::PerspectiveMatrix(mCamera.FieldOfView(), 1.f, 0.1f, 4096.f);
+    CGraphics::sMVPBlock.ModelMatrix = CTransform4f::TranslationMatrix(mCamera.Direction() * 5).ToMatrix4f();
+    CGraphics::sMVPBlock.ViewMatrix = mCamera.RotationOnlyViewMatrix();
+    CGraphics::sMVPBlock.ProjectionMatrix = Math::OrthographicMatrix(-1.f, 1.f, -1.f, 1.f, 0.1f, 100.f);
     CGraphics::UpdateMVPBlock();
 
-    glLineWidth(2.f);
+    glLineWidth(1.f);
     CDrawUtil::DrawLine(CVector3f(0,0,0), CVector3f(1,0,0), CColor::skRed);   // X
     CDrawUtil::DrawLine(CVector3f(0,0,0), CVector3f(0,1,0), CColor::skGreen); // Y
     CDrawUtil::DrawLine(CVector3f(0,0,0), CVector3f(0,0,1), CColor::skBlue);  // Z

UI/CBasicViewport.h

@@ -1,17 +1,18 @@
 #ifndef CEDITORGLWIDGET_H
 #define CEDITORGLWIDGET_H
 
-#include <QTimer>
 #include <gl/glew.h>
 #include <QOpenGLWidget>
-#include <QMouseEvent>
-#include <Common/CVector2f.h>
-#include <Common/CVector2i.h>
-#include <Core/CSceneManager.h>
+
 #include <Core/CRenderer.h>
-#include <Resource/CFont.h>
 #include <Common/CRay.h>
 #include <Common/CTimer.h>
+#include <Common/CVector2i.h>
+#include <Common/CVector2f.h>
+
+#include <QMouseEvent>
+#include <QPoint>
+#include <QTimer>
 
 class CBasicViewport : public QOpenGLWidget
 {
@@ -54,6 +55,7 @@ public:
     bool IsCursorVisible();
     bool IsMouseInputActive();
     bool IsKeyboardInputActive();
+    CRenderer* Renderer();
     CCamera& Camera();
     CRay CastRay();
     CVector2f MouseDeviceCoordinates();

UI/CModelEditorViewport.h

@@ -2,6 +2,7 @@
 #define CMODELEDITORVIEWPORT_H
 
 #include "CBasicViewport.h"
+#include <Scene/CModelNode.h>
 
 class CModelEditorViewport : public CBasicViewport
 {

UI/CWorldEditor.cpp

@@ -313,8 +313,9 @@ void CWorldEditor::OnTransformSpinBoxModified(CVector3f value)
 
 void CWorldEditor::OnTransformSpinBoxEdited(CVector3f)
 {
+    // bit of a hack - the vector editor emits a second "editing done" signal when it loses focus
     ui->TransformSpinBox->blockSignals(true);
-    setFocus();
+    ui->MainViewport->setFocus();
     ui->TransformSpinBox->blockSignals(false);
     if (mSelection.empty()) return;