mirror of
https://github.com/AxioDL/PrimeWorldEditor.git
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Mass refactoring part 1/2: establishing multiple subprojects, moving source files to their new location, adding resources/templates to version control
This commit is contained in:
parax0
299
src/Editor/CBasicViewport.cpp
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299
src/Editor/CBasicViewport.cpp
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#include "CBasicViewport.h"
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#include <Core/CDrawUtil.h>
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#include <Core/CGraphics.h>
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#include <Common/Math.h>
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#include <GL/glew.h>
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CBasicViewport::CBasicViewport(QWidget *pParent) :
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QOpenGLWidget(pParent),
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mLastDrawTime(CTimer::GlobalTime()),
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mKeysPressed(0),
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mButtonsPressed(0),
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mCursorState(Qt::ArrowCursor),
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mCursorVisible(true)
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{
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setMouseTracking(true);
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mCamera.SetAspectRatio((float) width() / height());
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mViewInfo.pCamera = &mCamera;
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mViewInfo.GameMode = false;
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}
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CBasicViewport::~CBasicViewport()
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{
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}
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void CBasicViewport::initializeGL()
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{
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// Initialize CGraphics
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CGraphics::Initialize();
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// Setting various GL flags
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glEnable(GL_PRIMITIVE_RESTART);
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glPrimitiveRestartIndex(0xFFFF);
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glDepthFunc(GL_LEQUAL);
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glEnable(GL_BLEND);
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glEnable(GL_POLYGON_OFFSET_FILL);
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glPolygonOffset(1.f, 5.f);
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// Clear cached material
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CMaterial::KillCachedMaterial();
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CShader::KillCachedShader();
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// Initialize size
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OnResize();
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}
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void CBasicViewport::paintGL()
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{
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// Prep render
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glViewport(0, 0, width(), height());
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glLineWidth(1.f);
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glEnable(GL_DEPTH_TEST);
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mViewInfo.ViewFrustum = mCamera.FrustumPlanes();
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CGraphics::sMVPBlock.ProjectionMatrix = mCamera.ProjectionMatrix();
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// Actual rendering is intended to be handled by subclassing CBasicViewport and
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// reimplementing Paint().
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Paint();
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// Finally, draw XYZ axes in the corner
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if (!mViewInfo.GameMode)
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DrawAxes();
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}
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void CBasicViewport::resizeGL(int w, int h)
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{
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mCamera.SetAspectRatio((float) w / h);
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glViewport(0, 0, w, h);
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OnResize();
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}
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void CBasicViewport::mousePressEvent(QMouseEvent *pEvent)
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{
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setFocus();
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if (pEvent->button() == Qt::MidButton) mButtonsPressed |= eMiddleButton;
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if (pEvent->button() == Qt::RightButton) mButtonsPressed |= eRightButton;
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if (IsMouseInputActive())
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{
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SetCursorVisible(false);
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mMouseMoved = false;
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mMoveTimer.Restart();
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}
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// Left click only activates if mouse input is inactive to prevent the user from
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// clicking on things and creating selection rectangles while the cursor is hidden
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else
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{
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if (pEvent->button() == Qt::LeftButton)
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mButtonsPressed |= eLeftButton;
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OnMouseClick(pEvent);
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}
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mLastMousePos = pEvent->globalPos();
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}
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void CBasicViewport::mouseReleaseEvent(QMouseEvent *pEvent)
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{
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bool fromMouseInput = IsMouseInputActive();
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if (pEvent->button() == Qt::LeftButton) mButtonsPressed &= ~eLeftButton;
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if (pEvent->button() == Qt::MidButton) mButtonsPressed &= ~eMiddleButton;
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if (pEvent->button() == Qt::RightButton) mButtonsPressed &= ~eRightButton;
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// Make cursor visible if needed
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if (!IsMouseInputActive())
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SetCursorVisible(true);
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// Run mouse release if we didn't just exit mouse input (or regardless on left click)
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if (!fromMouseInput || (pEvent->button() == Qt::LeftButton))
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OnMouseRelease(pEvent);
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}
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void CBasicViewport::mouseMoveEvent(QMouseEvent* /*pEvent*/)
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{
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// todo: draggable selection rectangle
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}
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void CBasicViewport::wheelEvent(QWheelEvent *pEvent)
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{
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// Maybe track a "wheel delta" member variable and let CCamera decide what to do with it?
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mCamera.Zoom(pEvent->angleDelta().y() / 240.f);
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}
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void CBasicViewport::keyPressEvent(QKeyEvent *pEvent)
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{
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switch (pEvent->key())
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{
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case Qt::Key_Q: mKeysPressed |= eQKey; break;
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case Qt::Key_W: mKeysPressed |= eWKey; break;
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case Qt::Key_E: mKeysPressed |= eEKey; break;
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case Qt::Key_A: mKeysPressed |= eAKey; break;
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case Qt::Key_S: mKeysPressed |= eSKey; break;
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case Qt::Key_D: mKeysPressed |= eDKey; break;
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case Qt::Key_Control: mKeysPressed |= eCtrlKey; break;
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}
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}
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void CBasicViewport::keyReleaseEvent(QKeyEvent *pEvent)
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{
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switch (pEvent->key())
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{
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case Qt::Key_Q: mKeysPressed &= ~eQKey; break;
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case Qt::Key_W: mKeysPressed &= ~eWKey; break;
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case Qt::Key_E: mKeysPressed &= ~eEKey; break;
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case Qt::Key_A: mKeysPressed &= ~eAKey; break;
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case Qt::Key_S: mKeysPressed &= ~eSKey; break;
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case Qt::Key_D: mKeysPressed &= ~eDKey; break;
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case Qt::Key_Control: mKeysPressed &= ~eCtrlKey; break;
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}
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}
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void CBasicViewport::focusOutEvent(QFocusEvent*)
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{
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// When the widget loses focus, release all input.
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mButtonsPressed = 0;
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mKeysPressed = 0;
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SetCursorVisible(true);
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}
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void CBasicViewport::contextMenuEvent(QContextMenuEvent *pEvent)
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{
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// Only allow context menu if we aren't exiting mouse input mode.
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if (!mMouseMoved && (mMoveTimer.Time() < 0.5))
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ContextMenu(pEvent);
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}
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void CBasicViewport::SetGameMode(bool Enabled)
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{
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mViewInfo.GameMode = Enabled;
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}
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void CBasicViewport::SetCursorState(const QCursor &Cursor)
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{
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mCursorState = Cursor;
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if (IsCursorVisible())
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setCursor(Cursor);
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}
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void CBasicViewport::SetCursorVisible(bool visible)
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{
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mCursorVisible = visible;
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if (visible)
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setCursor(mCursorState);
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else
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setCursor(Qt::BlankCursor);
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}
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bool CBasicViewport::IsCursorVisible()
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{
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return mCursorVisible;
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}
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bool CBasicViewport::IsMouseInputActive()
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{
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static const int skMoveButtons = eMiddleButton | eRightButton;
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return ((mButtonsPressed & skMoveButtons) != 0);
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}
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bool CBasicViewport::IsKeyboardInputActive()
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{
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static const int skMoveKeys = eQKey | eWKey | eEKey | eAKey | eSKey | eDKey;
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return ((mKeysPressed & skMoveKeys) != 0);
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}
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CCamera& CBasicViewport::Camera()
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{
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return mCamera;
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}
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CRay CBasicViewport::CastRay()
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{
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CVector2f MouseCoords = MouseDeviceCoordinates();
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return mCamera.CastRay(MouseCoords);
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}
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CVector2f CBasicViewport::MouseDeviceCoordinates()
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{
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QPoint MousePos = QCursor::pos();
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QPoint ThisPos = this->mapToGlobal(pos());
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MousePos -= ThisPos;
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CVector2f Device(
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(((2.f * MousePos.x()) / width()) - 1.f),
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(1.f - ((2.f * MousePos.y()) / height()))
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);
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return Device;
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}
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double CBasicViewport::LastRenderDuration()
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{
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return mFrameTimer.Time();
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}
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// ************ PUBLIC SLOTS ************
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void CBasicViewport::ProcessInput()
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{
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// Process camera input
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double DeltaTime = CTimer::GlobalTime() - mLastDrawTime;
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mLastDrawTime = CTimer::GlobalTime();
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if (IsMouseInputActive())
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{
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float XMovement = (QCursor::pos().x() - mLastMousePos.x()) * 0.01f;
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float YMovement = (QCursor::pos().y() - mLastMousePos.y()) * 0.01f;
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if ((XMovement != 0) || (YMovement != 0))
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{
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mCamera.ProcessMouseInput((EKeyInputs) mKeysPressed, (EMouseInputs) mButtonsPressed, XMovement, YMovement);
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QCursor::setPos(mLastMousePos);
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mMouseMoved = true;
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}
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}
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if (IsKeyboardInputActive())
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if ((mKeysPressed & eCtrlKey) == 0)
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mCamera.ProcessKeyInput((EKeyInputs) mKeysPressed, DeltaTime);
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// Update view info
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const CMatrix4f& View = mCamera.ViewMatrix();
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mViewInfo.RotationOnlyViewMatrix = CMatrix4f(View[0][0], View[0][1], View[0][2], 0.f,
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View[1][0], View[1][1], View[1][2], 0.f,
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View[2][0], View[2][1], View[2][2], 0.f,
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View[3][0], View[3][1], View[3][2], 1.f);
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mViewInfo.ViewFrustum = mCamera.FrustumPlanes();
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// Check user input
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CheckUserInput();
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}
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void CBasicViewport::Render()
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{
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mFrameTimer.Start();
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update();
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mFrameTimer.Stop();
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}
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// ************ PRIVATE ************
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void CBasicViewport::DrawAxes()
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{
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// Draw 64x64 axes in lower-left corner with 8px margins
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glViewport(8, 8, 64, 64);
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glEnable(GL_DEPTH_TEST);
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glClear(GL_DEPTH_BUFFER_BIT);
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glDepthRange(0.f, 1.f);
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CGraphics::sMVPBlock.ModelMatrix = CTransform4f::TranslationMatrix(mCamera.Direction() * 5).ToMatrix4f();
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CGraphics::sMVPBlock.ViewMatrix = mViewInfo.RotationOnlyViewMatrix;
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CGraphics::sMVPBlock.ProjectionMatrix = Math::OrthographicMatrix(-1.f, 1.f, -1.f, 1.f, 0.1f, 100.f);
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CGraphics::UpdateMVPBlock();
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glLineWidth(1.f);
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CDrawUtil::DrawLine(CVector3f(0,0,0), CVector3f(1,0,0), CColor::skRed); // X
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CDrawUtil::DrawLine(CVector3f(0,0,0), CVector3f(0,1,0), CColor::skGreen); // Y
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CDrawUtil::DrawLine(CVector3f(0,0,0), CVector3f(0,0,1), CColor::skBlue); // Z
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}
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