phoenix-firestorm/indra/newview/lltoolface.cpp

/**
 * @file lltoolface.cpp
 * @brief A tool to manipulate faces
 *
 * $LicenseInfo:firstyear=2001&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

#include "llviewerprecompiledheaders.h"

// File includes
#include "lltoolface.h"

// Library includes
#include "llfloaterreg.h"
#include "v3math.h"

// Viewer includes
#include "llviewercontrol.h"
#include "llselectmgr.h"
#include "llviewerobject.h"
#include "llviewerwindow.h"
#include "llfloatertools.h"
// [RLVa:KB] - Checked: RLVa-2.1.0
#include "rlvactions.h"
// [/RLVa:KB]

// #include "llpanelface.h"  // <FS:Zi> switchable edit texture/materials panel - include not needed
// <FS:Zi> Add control to drag texture faces around
#include "llspinctrl.h"
#include "llkeyboard.h"
#include "llwindow.h"

bool LLToolFace::mTextureGrabbed = false;
LLViewerObject* LLToolFace::mTextureObject = nullptr;
S32 LLToolFace::mFaceGrabbed=0;

#undef TEXTURE_GRAB_UPDATE_REGULARLY    // continuous update of texture grabbing, might cause twitching
// </FS:Zi>

//
// Member functions
//

LLToolFace::LLToolFace()
:   LLTool(std::string("Texture"))
{ }


LLToolFace::~LLToolFace()
{ }


bool LLToolFace::handleDoubleClick(S32 x, S32 y, MASK mask)
{
    if (!LLSelectMgr::getInstance()->getSelection()->isEmpty())
    {
        // You should already have an object selected from the mousedown.
        // If so, show its properties
        LLFloaterReg::showInstance("build", "Texture");
        return true;
    }
    else
    {
        // Nothing selected means the first mouse click was probably
        // bad, so try again.
        return false;
    }
}


bool LLToolFace::handleMouseDown(S32 x, S32 y, MASK mask)
{
    gViewerWindow->pickAsync(x, y, mask, pickCallback);
    mGrabX = x;
    mGrabY = y;
    return true;
}

void LLToolFace::pickCallback(const LLPickInfo& pick_info)
{
    LLViewerObject* hit_obj = pick_info.getObject();

    if (hit_obj)
    {
        S32 hit_face = pick_info.mObjectFace;

        if (hit_obj->isAvatar())
        {
            // ...clicked on an avatar, so don't do anything
            return;
        }

// [RLVa:KB] - Checked: RLVa-1.3.0
        if ( (RlvActions::isRlvEnabled()) && ((!RlvActions::canEdit(hit_obj)) || (!RlvActions::canInteract(hit_obj, pick_info.mObjectOffset))) )
        {
            return;
        }
// [/RLVa:KB]

        // ...clicked on a world object, try to pick the appropriate face

        if (pick_info.mKeyMask & MASK_SHIFT)
        {
            // If object not selected, need to inform sim
            if ( !hit_obj->isSelected() )
            {
                // object wasn't selected so add the object and face
                LLSelectMgr::getInstance()->selectObjectOnly(hit_obj, hit_face);
            }
            else if (!LLSelectMgr::getInstance()->getSelection()->contains(hit_obj, hit_face) )
            {
                // object is selected, but not this face, so add it.
                LLSelectMgr::getInstance()->addAsIndividual(hit_obj, hit_face);
            }
            else
            {
                // object is selected, as is this face, so remove the face.
                LLSelectMgr::getInstance()->remove(hit_obj, hit_face);

                // BUG: If you remove the last face, the simulator won't know about it.
            }
        }
        else
        {
            // clicked without modifiers, select only
            // this face
            LLSelectMgr::getInstance()->deselectAll();
            LLSelectMgr::getInstance()->selectObjectOnly(hit_obj, hit_face);
        }

        // <FS:Zi> Add control to drag texture faces around
        if (gSavedSettings.getBOOL("FSExperimentalDragTexture"))
        {
            // if the same object and face was clicked as before, assume the user wants to grab it
            if (LLToolFace::mTextureObject == hit_obj && LLToolFace::mFaceGrabbed == pick_info.mObjectFace)
            {
                LLToolFace::mTextureGrabbed = true;
                gViewerWindow->hideCursor();
            }
            else
            {
                LLToolFace::mTextureGrabbed = false;
                gViewerWindow->showCursor();
            }
        }

        // remember the object being selected so we can check for grabbing later
        LLToolFace::mTextureObject = hit_obj;
        // also remember the selected object face
        LLToolFace::mFaceGrabbed = pick_info.mObjectFace;
        // </FS:Zi>
    }
    else
    {
        if (!(pick_info.mKeyMask == MASK_SHIFT))
        {
            LLSelectMgr::getInstance()->deselectAll();
        }
    }
}


void LLToolFace::handleSelect()
{
    // From now on, draw faces
    LLSelectMgr::getInstance()->setTEMode(true);
}


void LLToolFace::handleDeselect()
{
    // Stop drawing faces
    LLSelectMgr::getInstance()->setTEMode(false);

    stopGrabbing(); // <FS:Zi> Add control to drag texture faces around
}


void LLToolFace::render()
{
    // <FS:Zi> Add control to drag texture faces around
    // // for now, do nothing

#ifdef TEXTURE_GRAB_UPDATE_REGULARLY
    static S32 updateCounter=0;
    static bool teDirty=false;
#endif

    // do nothing if no texture was grabbed or no associated object was found, or the object is no modify
    if(!LLToolFace::mTextureGrabbed || !LLToolFace::mTextureObject || !mTextureObject->permModify())
    {
        return;
    }

    // This is a rather lazy way of doing this, but the methods tried further down
    // didn't lead to the necessary accuracy. More research will be done to see if
    // it can be improved somehow.

    // get the mouse distance from the original grabbing point
    S32 dx=gViewerWindow->getCurrentMouseX()-mGrabX;
    S32 dy=mGrabY-gViewerWindow->getCurrentMouseY();

    // if no movement took place, stop here
    if(dx==0 && dy==0)
    {
        return;
    }

    // move the mouse back to the grabbing point
    gViewerWindow->getWindow()->setCursorPosition(LLCoordWindow(mGrabX,gViewerWindow->getWindowHeightRaw()-mGrabY-1));

    F32 u;
    F32 v;
    F32 scaleU;
    F32 scaleV;

    // get texture coordinates and scale from the currently edited face
    mTextureObject->getTE(mFaceGrabbed)->getOffset(&u,&v);
    mTextureObject->getTE(mFaceGrabbed)->getScale(&scaleU,&scaleV);

    // get the status of modifier keys
    MASK mask=gKeyboard->currentMask(false);

    // scale mode
//  if(mask & MASK_ALT)
    if(gKeyboard->getKeyDown(KEY_CAPSLOCK))
    {
        // set the value scaling based on SHIFT and CTRL keys being used
        F32 scale=10.0f;
        if(mask & MASK_CONTROL)
            scale=100.0f;
        else if(mask & MASK_SHIFT)
            scale=1000.0f;

        // recalculate texture scale
        scaleU-=(F32) dx/scale;
        scaleV+=(F32) dy/scale;

        // Bounds check
        if(scaleU<0.0f)  scaleU=0.0f;
        if(scaleV<0.0f)  scaleV=0.0f;

        // apply new texture scale
        mTextureObject->setTEScale(mFaceGrabbed,scaleU,scaleV);
    }
    // drag mode
    else
    {
        // set the value scaling based on SHIFT and CTRL keys being used
        F32 scale=100.0f;
        if(mask & MASK_CONTROL)
            scale=1000.0f;
        else if(mask & MASK_SHIFT)
            scale=10000.0f;

        // recalculate texture position
        u-=(F32) dx/scale*scaleU;
        v+=(F32) dy/scale*scaleV;

        // Bounds check and roll over
        if     (u> 1.0f)  u-=1.0f;
        else if(u<-1.0f)  u+=1.0f;
        if     (v> 1.0f)  v-=1.0f;
        else if(v<-1.0f)  v+=1.0f;

        // apply new texture position
        mTextureObject->setTEOffset(mFaceGrabbed,u,v);
    }

    // update the build floater to reflect the new values
    LLFloaterTools* toolsFloater=(LLFloaterTools*) LLFloaterReg::findInstance("build");
    if(toolsFloater)
    {
        // <FS:Zi> switchable edit texture/materials panel
        // LLPanelFace* panelFace=toolsFloater->mPanelFace;
        // if(panelFace)
        // {
        //  panelFace->refresh();
        // }
        toolsFloater->refreshPanelFace();
        // </FS:Zi>
    }

#ifdef TEXTURE_GRAB_UPDATE_REGULARLY
    teDirty=true;

    updateCounter++;
    if(updateCounter==10)
    {
        mTextureObject->sendTEUpdate();
        updateCounter=0;
        teDirty=false;
    }
#endif
    // this is one way I would rather do it than tracking mouse deltas, because it
    // would take rotations into account. However, mSTCoords seems too coarse to be useful
/*
    S32 x=gViewerWindow->getCurrentMouseX();
    S32 y=gViewerWindow->getCurrentMouseY();

    const LLPickInfo& pick=gViewerWindow->pickImmediate(x,y,true);

    if(pick.getObjectID()!=LLToolFace::mTextureObject->getID() || pick.mObjectFace!=LLToolFace::mFaceGrabbed)
    {
        return;
    }

    LL_WARNS() << x << " " << y << " " << pick.mSTCoords.mV[VX] << " " <<  pick.mSTCoords.mV[VY] << LL_ENDL;
*/

    // this is another way I would rather do it than tracking mouse deltas, because it
    // would take rotations into account. However, mSTCoords seems too coarse to be useful
/*
    S32 x=gViewerWindow->getCurrentMouseX();
    S32 y=gViewerWindow->getCurrentMouseY();

    S32 gDebugRaycastFaceHit = -1;
    LLVector3 gDebugRaycastIntersection;
    LLVector2 gDebugRaycastTexCoord;
    LLVector3 gDebugRaycastNormal;
    LLVector3 gDebugRaycastBinormal;
    LLVector3 gDebugRaycastStart;
    LLVector3 gDebugRaycastEnd;

    gDebugRaycastObject = gViewerWindow->cursorIntersect(x,y, 512.f, mTextureObject, mFaceGrabbed, false,
                                          &gDebugRaycastFaceHit,
                                          &gDebugRaycastIntersection,
                                          &gDebugRaycastTexCoord,
                                          &gDebugRaycastNormal,
                                          &gDebugRaycastBinormal,
                                          &gDebugRaycastStart,
                                          &gDebugRaycastEnd
                                         );

    if(!gDebugRaycastObject || gDebugRaycastFaceHit!=LLToolFace::mFaceGrabbed)
    {
        return;
    }
*/
}

void LLToolFace::stopGrabbing()
{
    if (mTextureObject)
    {
        mTextureObject->sendTEUpdate();
    }
    gViewerWindow->showCursor();

    LLToolFace::mTextureGrabbed = false;
    LLToolFace::mTextureObject = nullptr;
    LLToolFace::mFaceGrabbed = 0;
}

bool LLToolFace::handleMouseUp(S32 x, S32 y, MASK mask)
{
    if (mTextureObject)
    {
        mTextureObject->sendTEUpdate();
    }
    gViewerWindow->showCursor();
    LLToolFace::mTextureGrabbed = false;

    return true;
}
// </FS:Zi>