lltoolfocus.cpp

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#include "llviewerprecompiledheaders.h"

// File includes
#include "lltoolfocus.h" 

// Library includes
#include "v3math.h"
#include "llfontgl.h"
#include "llui.h"

// Viewer includes
#include "llagent.h"
#include "llbutton.h"
#include "llviewercontrol.h"
#include "lldrawable.h"
#include "llhoverview.h"
#include "llhudmanager.h"
#include "llfloatertools.h"
#include "llselectmgr.h"
#include "llstatusbar.h"
#include "lltoolmgr.h"
#include "llviewercamera.h"
#include "llviewerobject.h"
#include "llviewerwindow.h"
#include "llvoavatar.h"
#include "llmorphview.h"

// Globals
BOOL gCameraBtnZoom = TRUE;
BOOL gCameraBtnOrbit = FALSE;
BOOL gCameraBtnPan = FALSE;

const S32 SLOP_RANGE = 4;
const F32 FOCUS_OFFSET_FACTOR = 1.f;

//
// Camera - shared functionality
//

LLToolCamera::LLToolCamera()
:       LLTool("Camera"),
        mAccumX(0),
        mAccumY(0),
        mMouseDownX(0),
        mMouseDownY(0),
        mOutsideSlopX(FALSE),
        mOutsideSlopY(FALSE),
        mValidClickPoint(FALSE),
        mMouseSteering(FALSE),
        mMouseUpX(0),
        mMouseUpY(0),
        mMouseUpMask(MASK_NONE)
{ }


LLToolCamera::~LLToolCamera()
{ }

// virtual
void LLToolCamera::handleSelect()
{
        if (gFloaterTools)
        {
                gFloaterTools->setStatusText("camera");
        }
}

// virtual
void LLToolCamera::handleDeselect()
{
//      gAgent.setLookingAtAvatar(FALSE);
}

BOOL LLToolCamera::handleMouseDown(S32 x, S32 y, MASK mask)
{
        // Ensure a mouseup
        setMouseCapture(TRUE);

        // call the base class to propogate info to sim
        LLTool::handleMouseDown(x, y, mask);

        mAccumX = 0;
        mAccumY = 0;

        mOutsideSlopX = FALSE;
        mOutsideSlopY = FALSE;

        mValidClickPoint = FALSE;

        // If mouse capture gets ripped away, claim we moused up
        // at the point we moused down. JC
        mMouseUpX = x;
        mMouseUpY = y;
        mMouseUpMask = mask;

        gViewerWindow->hideCursor();

        gViewerWindow->hitObjectOrLandGlobalAsync(x, y, mask, pickCallback);
        // don't steal focus from UI
        return FALSE;
}

void LLToolCamera::pickCallback(S32 x, S32 y, MASK mask)
{
        if (!LLToolCamera::getInstance()->hasMouseCapture())
        {
                return;
        }

        LLToolCamera::getInstance()->mMouseDownX = x;
        LLToolCamera::getInstance()->mMouseDownY = y;

        gViewerWindow->moveCursorToCenter();

        // Potentially recenter if click outside rectangle
        LLViewerObject* hit_obj = gViewerWindow->lastObjectHit();

        // Check for hit the sky, or some other invalid point
        if (!hit_obj && gLastHitPosGlobal.isExactlyZero())
        {
                LLToolCamera::getInstance()->mValidClickPoint = FALSE;
                return;
        }

        // check for hud attachments
        if (hit_obj && hit_obj->isHUDAttachment())
        {
                LLObjectSelectionHandle selection = LLSelectMgr::getInstance()->getSelection();
                if (!selection->getObjectCount() || selection->getSelectType() != SELECT_TYPE_HUD)
                {
                        LLToolCamera::getInstance()->mValidClickPoint = FALSE;
                        return;
                }
        }

        if( CAMERA_MODE_CUSTOMIZE_AVATAR == gAgent.getCameraMode() )
        {
                BOOL good_customize_avatar_hit = FALSE;
                if( hit_obj )
                {
                        LLVOAvatar* avatar = gAgent.getAvatarObject();
                        if( hit_obj == avatar) 
                        {
                                // It's you
                                good_customize_avatar_hit = TRUE;
                        }
                        else
                        if( hit_obj->isAttachment() && hit_obj->permYouOwner() )
                        {
                                // It's an attachment that you're wearing
                                good_customize_avatar_hit = TRUE;
                        }
                }

                if( !good_customize_avatar_hit )
                {
                        LLToolCamera::getInstance()->mValidClickPoint = FALSE;
                        return;
                }

                if( gMorphView )
                {
                        gMorphView->setCameraDrivenByKeys( FALSE );
                }
        }
        //RN: check to see if this is mouse-driving as opposed to ALT-zoom or Focus tool
        else if (mask & MASK_ALT || 
                        (LLToolMgr::getInstance()->getCurrentTool()->getName() == "Camera")) 
        {
                LLViewerObject* hit_obj = gViewerWindow->lastObjectHit();
                if (hit_obj)
                {
                        // ...clicked on a world object, so focus at its position
                        // Use "gLastHitPosGlobal" because it's correct for avatar heads,
                        // not pelvis.
                        if (!hit_obj->isHUDAttachment())
                        {
                                gAgent.setFocusOnAvatar(FALSE, ANIMATE);
                                gAgent.setFocusGlobal( gLastHitObjectOffset + gLastHitPosGlobal, gLastHitObjectID);
                        }
                }
                else if (!gLastHitPosGlobal.isExactlyZero())
                {
                        // Hit the ground
                        gAgent.setFocusOnAvatar(FALSE, ANIMATE);
                        gAgent.setFocusGlobal( gLastHitPosGlobal, gLastHitObjectID);
                }

                if (!(mask & MASK_ALT) &&
                        gAgent.cameraThirdPerson() &&
                        gViewerWindow->getLeftMouseDown() && 
                        !gSavedSettings.getBOOL("FreezeTime") &&
                        (hit_obj == gAgent.getAvatarObject() || 
                                (hit_obj && hit_obj->isAttachment() && LLVOAvatar::findAvatarFromAttachment(hit_obj)->mIsSelf)))
                {
                        LLToolCamera::getInstance()->mMouseSteering = TRUE;
                }

        }

        LLToolCamera::getInstance()->mValidClickPoint = TRUE;

        if( CAMERA_MODE_CUSTOMIZE_AVATAR == gAgent.getCameraMode() )
        {
                gAgent.setFocusOnAvatar(FALSE, FALSE);
                
                LLVector3d cam_pos = gAgent.getCameraPositionGlobal();
                cam_pos -= LLVector3d(LLViewerCamera::getInstance()->getLeftAxis() * gAgent.calcCustomizeAvatarUIOffset( cam_pos ));

                gAgent.setCameraPosAndFocusGlobal( cam_pos, gLastHitObjectOffset + gLastHitPosGlobal, gLastHitObjectID);
        }
}


// "Let go" of the mouse, for example on mouse up or when
// we lose mouse capture.  This ensures that cursor becomes visible
// if a modal dialog pops up during Alt-Zoom. JC
void LLToolCamera::releaseMouse()
{
        // Need to tell the sim that the mouse button is up, since this
        // tool is no longer working and cursor is visible (despite actual
        // mouse button status).
        LLTool::handleMouseUp(mMouseUpX, mMouseUpY, mMouseUpMask);

        gViewerWindow->showCursor();

        LLToolMgr::getInstance()->clearTransientTool();

        mMouseSteering = FALSE;
        mValidClickPoint = FALSE;
        mOutsideSlopX = FALSE;
        mOutsideSlopY = FALSE;
}


BOOL LLToolCamera::handleMouseUp(S32 x, S32 y, MASK mask)
{
        // Claim that we're mousing up somewhere
        mMouseUpX = x;
        mMouseUpY = y;
        mMouseUpMask = mask;

        if (hasMouseCapture())
        {
                if (mValidClickPoint)
                {
                        if( CAMERA_MODE_CUSTOMIZE_AVATAR == gAgent.getCameraMode() )
                        {
                                LLCoordGL mouse_pos;
                                LLVector3 focus_pos = gAgent.getPosAgentFromGlobal(gAgent.getFocusGlobal());
                                BOOL success = LLViewerCamera::getInstance()->projectPosAgentToScreen(focus_pos, mouse_pos);
                                if (success)
                                {
                                        LLUI::setCursorPositionScreen(mouse_pos.mX, mouse_pos.mY);
                                }
                        }
                        else if (mMouseSteering)
                        {
                                LLUI::setCursorPositionScreen(mMouseDownX, mMouseDownY);
                        }
                        else
                        {
                                gViewerWindow->moveCursorToCenter();
                        }
                }
                else
                {
                        // not a valid zoomable object
                        LLUI::setCursorPositionScreen(mMouseDownX, mMouseDownY);
                }

                // calls releaseMouse() internally
                setMouseCapture(FALSE);
        }
        else
        {
                releaseMouse();
        }

        return TRUE;
}


BOOL LLToolCamera::handleHover(S32 x, S32 y, MASK mask)
{
        S32 dx = gViewerWindow->getCurrentMouseDX();
        S32 dy = gViewerWindow->getCurrentMouseDY();
        
        BOOL moved_outside_slop = FALSE;
        
        if (hasMouseCapture() && mValidClickPoint)
        {
                mAccumX += llabs(dx);
                mAccumY += llabs(dy);

                if (mAccumX >= SLOP_RANGE)
                {
                        if (!mOutsideSlopX)
                        {
                                moved_outside_slop = TRUE;
                        }
                        mOutsideSlopX = TRUE;
                }

                if (mAccumY >= SLOP_RANGE)
                {
                        if (!mOutsideSlopY)
                        {
                                moved_outside_slop = TRUE;
                        }
                        mOutsideSlopY = TRUE;
                }
        }

        if (mOutsideSlopX || mOutsideSlopY)
        {
                if (!mValidClickPoint)
                {
                        lldebugst(LLERR_USER_INPUT) << "hover handled by LLToolFocus [invalid point]" << llendl;
                        gViewerWindow->setCursor(UI_CURSOR_NO);
                        gViewerWindow->showCursor();
                        return TRUE;
                }

                if (gCameraBtnOrbit ||
                        mask == MASK_ORBIT || 
                        mask == (MASK_ALT | MASK_ORBIT))
                {
                        // Orbit tool
                        if (hasMouseCapture())
                        {
                                const F32 RADIANS_PER_PIXEL = 360.f * DEG_TO_RAD / gViewerWindow->getWindowWidth();

                                if (dx != 0)
                                {
                                        gAgent.cameraOrbitAround( -dx * RADIANS_PER_PIXEL );
                                }

                                if (dy != 0)
                                {
                                        gAgent.cameraOrbitOver( -dy * RADIANS_PER_PIXEL );
                                }

                                gViewerWindow->moveCursorToCenter();
                        }
                        lldebugst(LLERR_USER_INPUT) << "hover handled by LLToolFocus [active]" << llendl;
                }
                else if (       gCameraBtnPan ||
                                        mask == MASK_PAN ||
                                        mask == (MASK_PAN | MASK_ALT) )
                {
                        // Pan tool
                        if (hasMouseCapture())
                        {
                                LLVector3d camera_to_focus = gAgent.getCameraPositionGlobal();
                                camera_to_focus -= gAgent.getFocusGlobal();
                                F32 dist = (F32) camera_to_focus.normVec();

                                // Fudge factor for pan
                                F32 meters_per_pixel = 3.f * dist / gViewerWindow->getWindowWidth();

                                if (dx != 0)
                                {
                                        gAgent.cameraPanLeft( dx * meters_per_pixel );
                                }

                                if (dy != 0)
                                {
                                        gAgent.cameraPanUp( -dy * meters_per_pixel );
                                }

                                gViewerWindow->moveCursorToCenter();
                        }
                        lldebugst(LLERR_USER_INPUT) << "hover handled by LLToolPan" << llendl;
                }
                else if (gCameraBtnZoom)
                {
                        // Zoom tool
                        if (hasMouseCapture())
                        {

                                const F32 RADIANS_PER_PIXEL = 360.f * DEG_TO_RAD / gViewerWindow->getWindowWidth();

                                if (dx != 0)
                                {
                                        gAgent.cameraOrbitAround( -dx * RADIANS_PER_PIXEL );
                                }

                                const F32 IN_FACTOR = 0.99f;

                                if (dy != 0 && mOutsideSlopY )
                                {
                                        if (mMouseSteering)
                                        {
                                                gAgent.cameraOrbitOver( -dy * RADIANS_PER_PIXEL );
                                        }
                                        else
                                        {
                                                gAgent.cameraZoomIn( pow( IN_FACTOR, dy ) );
                                        }
                                }

                                gViewerWindow->moveCursorToCenter();
                        }

                        lldebugst(LLERR_USER_INPUT) << "hover handled by LLToolZoom" << llendl;         
                }
        }

        if (gCameraBtnOrbit ||
                mask == MASK_ORBIT || 
                mask == (MASK_ALT | MASK_ORBIT))
        {
                gViewerWindow->setCursor(UI_CURSOR_TOOLCAMERA);
        }
        else if (       gCameraBtnPan ||
                                mask == MASK_PAN ||
                                mask == (MASK_PAN | MASK_ALT) )
        {
                gViewerWindow->setCursor(UI_CURSOR_TOOLPAN);
        }
        else
        {
                gViewerWindow->setCursor(UI_CURSOR_TOOLZOOMIN);
        }
        
        return TRUE;
}


void LLToolCamera::onMouseCaptureLost()
{
        releaseMouse();
}

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