llmanip.cpp

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#include "llviewerprecompiledheaders.h"

#include "llmanip.h"

#include "llmath.h"
#include "v3math.h"
#include "llgl.h"
#include "llglimmediate.h"
#include "llprimitive.h"
#include "llview.h"
#include "llviewerimagelist.h"

#include "llagent.h"
#include "llviewercontrol.h"
#include "lldrawable.h"
#include "llfontgl.h"
#include "llhudrender.h"
#include "llselectmgr.h"
#include "llui.h"
#include "llviewercamera.h"
#include "llviewerjoint.h"
#include "llviewerobject.h"
#include "llviewerwindow.h"
#include "llvoavatar.h"
#include "llworld.h"            // for LLWorld::getInstance()
#include "llresmgr.h"
#include "pipeline.h"
#include "llglheaders.h"

// Local constants...
const S32 VERTICAL_OFFSET = 50;

F32             LLManip::sHelpTextVisibleTime = 2.f;
F32             LLManip::sHelpTextFadeTime = 2.f;
S32             LLManip::sNumTimesHelpTextShown = 0;
S32             LLManip::sMaxTimesShowHelpText = 5;
F32             LLManip::sGridMaxSubdivisionLevel = 32.f;
F32             LLManip::sGridMinSubdivisionLevel = 1.f;
LLVector2 LLManip::sTickLabelSpacing(60.f, 25.f);


//static
void LLManip::rebuild(LLViewerObject* vobj)
{
        LLDrawable* drawablep = vobj->mDrawable;
        if (drawablep && drawablep->getVOVolume())
        {
                
                gPipeline.markRebuild(drawablep,LLDrawable::REBUILD_VOLUME, TRUE);
                drawablep->setState(LLDrawable::MOVE_UNDAMPED); // force to UNDAMPED
                drawablep->updateMove();
                LLSpatialGroup* group = drawablep->getSpatialGroup();
                if (group)
                {
                        group->dirtyGeom();
                }
        }
}

// LLManip


LLManip::LLManip( const LLString& name, LLToolComposite* composite )
        :
        LLTool( name, composite ),
        mInSnapRegime(FALSE),
        mHighlightedPart(LL_NO_PART)
{
}

void LLManip::getManipNormal(LLViewerObject* object, EManipPart manip, LLVector3 &normal)
{
        LLVector3 grid_origin;
        LLVector3 grid_scale;
        LLQuaternion grid_rotation;

        LLSelectMgr::getInstance()->getGrid(grid_origin, grid_rotation, grid_scale);

        if (manip >= LL_X_ARROW && manip <= LL_Z_ARROW)
        {
                LLVector3 arrow_axis;
                getManipAxis(object, manip, arrow_axis);

                LLVector3 cross = arrow_axis % LLViewerCamera::getInstance()->getAtAxis();
                normal = cross % arrow_axis;
                normal.normVec();
        }
        else if (manip >= LL_YZ_PLANE && manip <= LL_XY_PLANE)
        {
                switch (manip)
                {
                case LL_YZ_PLANE:
                        normal = LLVector3::x_axis;
                        break;
                case LL_XZ_PLANE:
                        normal = LLVector3::y_axis;
                        break;
                case LL_XY_PLANE:
                        normal = LLVector3::z_axis;
                        break;
                default:
                        break;
                }
                normal.rotVec(grid_rotation);
        }
        else
        {
                normal.clearVec();
        }
}


BOOL LLManip::getManipAxis(LLViewerObject* object, EManipPart manip, LLVector3 &axis)
{
        LLVector3 grid_origin;
        LLVector3 grid_scale;
        LLQuaternion grid_rotation;

        LLSelectMgr::getInstance()->getGrid(grid_origin, grid_rotation, grid_scale);

        if (manip == LL_X_ARROW)
        {
                axis = LLVector3::x_axis;
        }
        else if (manip == LL_Y_ARROW)
        {
                axis = LLVector3::y_axis;
        }
        else if (manip == LL_Z_ARROW)
        {
                axis = LLVector3::z_axis;
        }
        else
        {
                return FALSE;
        }

        axis.rotVec( grid_rotation );
        return TRUE;
}

F32 LLManip::getSubdivisionLevel(const LLVector3 &reference_point, const LLVector3 &translate_axis, F32 grid_scale, S32 min_pixel_spacing)
{
        //update current snap subdivision level
        LLVector3 cam_to_reference;
        if (mObjectSelection->getSelectType() == SELECT_TYPE_HUD)
        {
                cam_to_reference = LLVector3(1.f / gAgent.getAvatarObject()->mHUDCurZoom, 0.f, 0.f);
        }
        else
        {
                cam_to_reference = reference_point - LLViewerCamera::getInstance()->getOrigin();
        }
        F32 current_range = cam_to_reference.normVec();

        F32 projected_translation_axis_length = (translate_axis % cam_to_reference).magVec();
        F32 subdivisions = llmax(projected_translation_axis_length * grid_scale / (current_range / LLViewerCamera::getInstance()->getPixelMeterRatio() * min_pixel_spacing), 0.f);
        subdivisions = llclamp((F32)pow(2.f, llfloor(log(subdivisions) / log(2.f))), 1.f / 32.f, 32.f);

        return subdivisions;
}

void LLManip::handleSelect()
{
        mObjectSelection = LLSelectMgr::getInstance()->getEditSelection();
}

void LLManip::handleDeselect()
{
        mObjectSelection = NULL;
}

LLObjectSelectionHandle LLManip::getSelection()
{
        return mObjectSelection;
}

BOOL LLManip::handleHover(S32 x, S32 y, MASK mask)
{
        // We only handle the event if mousedown started with us
        if( hasMouseCapture() )
        {
                if( mObjectSelection->isEmpty() )
                {
                        // Somehow the object got deselected while we were dragging it.
                        // Release the mouse
                        setMouseCapture( FALSE );
                }

                lldebugst(LLERR_USER_INPUT) << "hover handled by LLManip (active)" << llendl;
        }
        else
        {
                lldebugst(LLERR_USER_INPUT) << "hover handled by LLManip (inactive)" << llendl;
        }
        gViewerWindow->setCursor(UI_CURSOR_ARROW);
        return TRUE;
}


BOOL LLManip::handleMouseUp(S32 x, S32 y, MASK mask)
{
        BOOL    handled = FALSE;
        if( hasMouseCapture() )
        {
                handled = TRUE;
                setMouseCapture( FALSE );
        }
        return handled;
}

void LLManip::updateGridSettings()
{
        sGridMaxSubdivisionLevel = gSavedSettings.getBOOL("GridSubUnit") ? (F32)gSavedSettings.getS32("GridSubdivision") : 1.f;
}

BOOL LLManip::getMousePointOnPlaneAgent(LLVector3& point, S32 x, S32 y, LLVector3 origin, LLVector3 normal)
{
        LLVector3d origin_double = gAgent.getPosGlobalFromAgent(origin);
        LLVector3d global_point;
        BOOL result = getMousePointOnPlaneGlobal(global_point, x, y, origin_double, normal);
        point = gAgent.getPosAgentFromGlobal(global_point);
        return result;
}

BOOL LLManip::getMousePointOnPlaneGlobal(LLVector3d& point, S32 x, S32 y, LLVector3d origin, LLVector3 normal) const
{
        if (mObjectSelection->getSelectType() == SELECT_TYPE_HUD)
        {
                BOOL result = FALSE;
                F32 mouse_x = ((F32)x / gViewerWindow->getWindowWidth() - 0.5f) * LLViewerCamera::getInstance()->getAspect() / gAgent.getAvatarObject()->mHUDCurZoom;
                F32 mouse_y = ((F32)y / gViewerWindow->getWindowHeight() - 0.5f) / gAgent.getAvatarObject()->mHUDCurZoom;

                LLVector3 origin_agent = gAgent.getPosAgentFromGlobal(origin);
                LLVector3 mouse_pos = LLVector3(0.f, -mouse_x, mouse_y);
                if (llabs(normal.mV[VX]) < 0.001f)
                {
                        // use largish value that should be outside HUD manipulation range
                        mouse_pos.mV[VX] = 10.f;
                }
                else
                {
                        mouse_pos.mV[VX] = (normal * (origin_agent - mouse_pos))
                                                                / (normal.mV[VX]);
                        result = TRUE;
                }

                point = gAgent.getPosGlobalFromAgent(mouse_pos);
                return result;
        }
        else
        {
                return gViewerWindow->mousePointOnPlaneGlobal(
                                                                                point, x, y, origin, normal );
        }

        //return FALSE;
}

// Given the line defined by mouse cursor (a1 + a_param*(a2-a1)) and the line defined by b1 + b_param*(b2-b1),
// returns a_param and b_param for the points where lines are closest to each other.
// Returns false if the two lines are parallel.
BOOL LLManip::nearestPointOnLineFromMouse( S32 x, S32 y, const LLVector3& b1, const LLVector3& b2, F32 &a_param, F32 &b_param )
{
        LLVector3 a1;
        LLVector3 a2;

        if (mObjectSelection->getSelectType() == SELECT_TYPE_HUD)
        {
                F32 mouse_x = (((F32)x / gViewerWindow->getWindowWidth()) - 0.5f) * LLViewerCamera::getInstance()->getAspect() / gAgent.getAvatarObject()->mHUDCurZoom;
                F32 mouse_y = (((F32)y / gViewerWindow->getWindowHeight()) - 0.5f) / gAgent.getAvatarObject()->mHUDCurZoom;
                a1 = LLVector3(llmin(b1.mV[VX] - 0.1f, b2.mV[VX] - 0.1f, 0.f), -mouse_x, mouse_y);
                a2 = a1 + LLVector3(1.f, 0.f, 0.f);
        }
        else
        {
                a1 = gAgent.getCameraPositionAgent();
                a2 = gAgent.getCameraPositionAgent() + LLVector3(gViewerWindow->mouseDirectionGlobal(x, y));
        }

        BOOL parallel = TRUE;
        LLVector3 a = a2 - a1;
        LLVector3 b = b2 - b1;

        LLVector3 normal;
        F32 dist, denom;
        normal = (b % a) % b;   // normal to plane (P) through b and (shortest line between a and b)
        normal.normVec();
        dist = b1 * normal;                     // distance from origin to P

        denom = normal * a; 
        if( (denom < -F_APPROXIMATELY_ZERO) || (F_APPROXIMATELY_ZERO < denom) )
        {
                a_param = (dist - normal * a1) / denom;
                parallel = FALSE;
        }

        normal = (a % b) % a;   // normal to plane (P) through a and (shortest line between a and b)
        normal.normVec();
        dist = a1 * normal;                     // distance from origin to P
        denom = normal * b; 
        if( (denom < -F_APPROXIMATELY_ZERO) || (F_APPROXIMATELY_ZERO < denom) )
        {
                b_param = (dist - normal * b1) / denom;
                parallel = FALSE;
        }

        return parallel;
}

LLVector3 LLManip::getSavedPivotPoint() const
{
        return LLSelectMgr::getInstance()->getSavedBBoxOfSelection().getCenterAgent();
}

LLVector3 LLManip::getPivotPoint()
{
        if (mObjectSelection->getFirstObject() && mObjectSelection->getObjectCount() == 1 && mObjectSelection->getSelectType() != SELECT_TYPE_HUD)
        {
                return mObjectSelection->getFirstObject()->getPivotPositionAgent();
        }
        return LLSelectMgr::getInstance()->getBBoxOfSelection().getCenterAgent();
}


void LLManip::renderGuidelines(BOOL draw_x, BOOL draw_y, BOOL draw_z)
{
        LLVector3 grid_origin;
        LLQuaternion grid_rot;
        LLVector3 grid_scale;
        LLSelectMgr::getInstance()->getGrid(grid_origin, grid_rot, grid_scale);

        const BOOL children_ok = TRUE;
        LLViewerObject* object = mObjectSelection->getFirstRootObject(children_ok);
        if (!object)
        {
                return;
        }

        //LLVector3  center_agent  = LLSelectMgr::getInstance()->getBBoxOfSelection().getCenterAgent();
        LLVector3  center_agent  = getPivotPoint();

        glPushMatrix();
        {
                glTranslatef(center_agent.mV[VX], center_agent.mV[VY], center_agent.mV[VZ]);

                F32 angle_radians, x, y, z;

                grid_rot.getAngleAxis(&angle_radians, &x, &y, &z);
                glRotatef(angle_radians * RAD_TO_DEG, x, y, z);

                F32 region_size = LLWorld::getInstance()->getRegionWidthInMeters();

                const F32 LINE_ALPHA = 0.33f;

                LLGLSNoTexture gls_no_texture;
                LLUI::setLineWidth(1.5f);

                if (draw_x)
                {
                        gGL.color4f(1.f, 0.f, 0.f, LINE_ALPHA);
                        gGL.begin(LLVertexBuffer::LINES);
                        gGL.vertex3f( -region_size, 0.f, 0.f );
                        gGL.vertex3f(  region_size, 0.f, 0.f );
                        gGL.end();
                }

                if (draw_y)
                {
                        gGL.color4f(0.f, 1.f, 0.f, LINE_ALPHA);
                        gGL.begin(LLVertexBuffer::LINES);
                        gGL.vertex3f( 0.f, -region_size, 0.f );
                        gGL.vertex3f( 0.f,  region_size, 0.f );
                        gGL.end();
                }

                if (draw_z)
                {
                        gGL.color4f(0.f, 0.f, 1.f, LINE_ALPHA);
                        gGL.begin(LLVertexBuffer::LINES);
                        gGL.vertex3f( 0.f, 0.f, -region_size );
                        gGL.vertex3f( 0.f, 0.f,  region_size );
                        gGL.end();
                }
                LLUI::setLineWidth(1.0f);
        }
        glPopMatrix();
}

void LLManip::renderXYZ(const LLVector3 &vec) 
{
        const S32 PAD = 10;
        char feedback_string[128];              /*Flawfinder: ignore*/
        LLVector3 camera_pos = LLViewerCamera::getInstance()->getOrigin() + LLViewerCamera::getInstance()->getAtAxis();
        S32 vertical_offset = gViewerWindow->getWindowHeight() / 2 - VERTICAL_OFFSET;
        S32 window_center_x = gViewerWindow->getWindowWidth() / 2;
        S32 window_center_y = gViewerWindow->getWindowHeight() / 2;

        glPushMatrix();
        {
                LLUIImagePtr imagep = LLUI::getUIImage("rounded_square.tga");
                gViewerWindow->setup2DRender();
                const LLVector2& display_scale = gViewerWindow->getDisplayScale();
                glScalef(display_scale.mV[VX], display_scale.mV[VY], 1.f);
                gGL.color4f(0.f, 0.f, 0.f, 0.7f);

                imagep->draw(
                        window_center_x - 115, 
                        window_center_y + vertical_offset - PAD, 
                        235,
                        PAD * 2 + 10, 
                        LLColor4(0.f, 0.f, 0.f, 0.7f) );
        }
        glPopMatrix();

        gViewerWindow->setup3DRender();

        {
                LLLocale locale(LLLocale::USER_LOCALE);
                LLGLDepthTest gls_depth(GL_FALSE);
                // render drop shadowed text
                snprintf(feedback_string, sizeof(feedback_string), "X: %.3f", vec.mV[VX]);                      /* Flawfinder: ignore */
                hud_render_text(utf8str_to_wstring(feedback_string), camera_pos, *LLResMgr::getInstance()->getRes( LLFONT_SANSSERIF ), LLFontGL::NORMAL, -102.f + 1.f, (F32)vertical_offset - 1.f, LLColor4::black, FALSE);

                snprintf(feedback_string, sizeof(feedback_string), "Y: %.3f", vec.mV[VY]);                      /* Flawfinder: ignore */
                hud_render_text(utf8str_to_wstring(feedback_string), camera_pos, *LLResMgr::getInstance()->getRes( LLFONT_SANSSERIF ), LLFontGL::NORMAL, -27.f + 1.f, (F32)vertical_offset - 1.f, LLColor4::black, FALSE);
                
                snprintf(feedback_string, sizeof(feedback_string), "Z: %.3f", vec.mV[VZ]);                      /* Flawfinder: ignore */
                hud_render_text(utf8str_to_wstring(feedback_string), camera_pos, *LLResMgr::getInstance()->getRes( LLFONT_SANSSERIF ), LLFontGL::NORMAL, 48.f + 1.f, (F32)vertical_offset - 1.f, LLColor4::black, FALSE);

                // render text on top
                snprintf(feedback_string, sizeof(feedback_string), "X: %.3f", vec.mV[VX]);                      /* Flawfinder: ignore */
                hud_render_text(utf8str_to_wstring(feedback_string), camera_pos, *LLResMgr::getInstance()->getRes( LLFONT_SANSSERIF ), LLFontGL::NORMAL, -102.f, (F32)vertical_offset, LLColor4(1.f, 0.5f, 0.5f, 1.f), FALSE);

                glColor3f(0.5f, 1.f, 0.5f);
                snprintf(feedback_string, sizeof(feedback_string), "Y: %.3f", vec.mV[VY]);                      /* Flawfinder: ignore */
                hud_render_text(utf8str_to_wstring(feedback_string), camera_pos, *LLResMgr::getInstance()->getRes( LLFONT_SANSSERIF ), LLFontGL::NORMAL, -27.f, (F32)vertical_offset, LLColor4(0.5f, 1.f, 0.5f, 1.f), FALSE);
                
                glColor3f(0.5f, 0.5f, 1.f);
                snprintf(feedback_string, sizeof(feedback_string), "Z: %.3f", vec.mV[VZ]);                      /* Flawfinder: ignore */
                hud_render_text(utf8str_to_wstring(feedback_string), camera_pos, *LLResMgr::getInstance()->getRes( LLFONT_SANSSERIF ), LLFontGL::NORMAL, 48.f, (F32)vertical_offset, LLColor4(0.5f, 0.5f, 1.f, 1.f), FALSE);
        }
}

void LLManip::renderTickText(const LLVector3& pos, const char* text, const LLColor4 &color)
{
        const LLFontGL* big_fontp = LLResMgr::getInstance()->getRes( LLFONT_SANSSERIF );

        BOOL hud_selection = mObjectSelection->getSelectType() == SELECT_TYPE_HUD;
        glMatrixMode(GL_MODELVIEW);
        glPushMatrix();
        LLVector3 render_pos = pos;
        if (hud_selection)
        {
                F32 zoom_amt = gAgent.getAvatarObject()->mHUDCurZoom;
                F32 inv_zoom_amt = 1.f / zoom_amt;
                // scale text back up to counter-act zoom level
                render_pos = pos * zoom_amt;
                glScalef(inv_zoom_amt, inv_zoom_amt, inv_zoom_amt);
        }

        // render shadow first
        LLColor4 shadow_color = LLColor4::black;
        shadow_color.mV[VALPHA] = color.mV[VALPHA] * 0.5f;
        gViewerWindow->setupViewport(1, -1);
        hud_render_utf8text(text, render_pos, *big_fontp, LLFontGL::NORMAL, -0.5f * big_fontp->getWidthF32(text), 3.f, shadow_color, mObjectSelection->getSelectType() == SELECT_TYPE_HUD);
        gViewerWindow->setupViewport();
        hud_render_utf8text(text, render_pos, *big_fontp, LLFontGL::NORMAL, -0.5f * big_fontp->getWidthF32(text), 3.f, color, mObjectSelection->getSelectType() == SELECT_TYPE_HUD);

        glPopMatrix();
}

void LLManip::renderTickValue(const LLVector3& pos, F32 value, const char* suffix, const LLColor4 &color)
{
        LLLocale locale(LLLocale::USER_LOCALE);

        const LLFontGL* big_fontp = LLResMgr::getInstance()->getRes( LLFONT_SANSSERIF );
        const LLFontGL* small_fontp = LLResMgr::getInstance()->getRes( LLFONT_SANSSERIF_SMALL );

        char val_string[128];           /*Flawfinder: ignore*/
        char fraction_string[128];              /*Flawfinder: ignore*/
        F32 val_to_print = llround(value, 0.001f);
        S32 fractional_portion = llround(fmodf(llabs(val_to_print), 1.f) * 100.f);
        if (val_to_print < 0.f)
        {
                if (fractional_portion == 0)
                {
                        snprintf(val_string, sizeof(val_string), "-%d%s", lltrunc(llabs(val_to_print)), suffix);                        /* Flawfinder: ignore */
                }
                else
                {
                        snprintf(val_string, sizeof(val_string), "-%d", lltrunc(llabs(val_to_print)));                  /* Flawfinder: ignore */
                }
        }
        else
        {
                if (fractional_portion == 0)
                {
                        snprintf(val_string, sizeof(val_string), "%d%s", lltrunc(llabs(val_to_print)), suffix);                 /* Flawfinder: ignore */
                }
                else
                {
                        snprintf(val_string, sizeof(val_string), "%d", lltrunc(val_to_print));                  /* Flawfinder: ignore */
                }
        }

        BOOL hud_selection = mObjectSelection->getSelectType() == SELECT_TYPE_HUD;
        glMatrixMode(GL_MODELVIEW);
        glPushMatrix();
        LLVector3 render_pos = pos;
        if (hud_selection)
        {
                F32 zoom_amt = gAgent.getAvatarObject()->mHUDCurZoom;
                F32 inv_zoom_amt = 1.f / zoom_amt;
                // scale text back up to counter-act zoom level
                render_pos = pos * zoom_amt;
                glScalef(inv_zoom_amt, inv_zoom_amt, inv_zoom_amt);
        }

        LLColor4 shadow_color = LLColor4::black;
        shadow_color.mV[VALPHA] = color.mV[VALPHA] * 0.5f;

        if (fractional_portion != 0)
        {
                snprintf(fraction_string, sizeof(fraction_string), "%c%02d%s", LLResMgr::getInstance()->getDecimalPoint(), fractional_portion, suffix);                 /* Flawfinder: ignore */

                gViewerWindow->setupViewport(1, -1);
                hud_render_utf8text(val_string, render_pos, *big_fontp, LLFontGL::NORMAL, -1.f * big_fontp->getWidthF32(val_string), 3.f, shadow_color, hud_selection);
                hud_render_utf8text(fraction_string, render_pos, *small_fontp, LLFontGL::NORMAL, 1.f, 3.f, shadow_color, hud_selection);

                gViewerWindow->setupViewport();
                hud_render_utf8text(val_string, render_pos, *big_fontp, LLFontGL::NORMAL, -1.f * big_fontp->getWidthF32(val_string), 3.f, color, hud_selection);
                hud_render_utf8text(fraction_string, render_pos, *small_fontp, LLFontGL::NORMAL, 1.f, 3.f, color, hud_selection);
        }
        else
        {
                gViewerWindow->setupViewport(1, -1);
                hud_render_utf8text(val_string, render_pos, *big_fontp, LLFontGL::NORMAL, -0.5f * big_fontp->getWidthF32(val_string), 3.f, shadow_color, hud_selection);
                gViewerWindow->setupViewport();
                hud_render_utf8text(val_string, render_pos, *big_fontp, LLFontGL::NORMAL, -0.5f * big_fontp->getWidthF32(val_string), 3.f, color, hud_selection);
        }
        glPopMatrix();
}

LLColor4 LLManip::setupSnapGuideRenderPass(S32 pass)
{
        static LLColor4 grid_color_fg = gColors.getColor("GridlineColor");
        static LLColor4 grid_color_bg = gColors.getColor("GridlineBGColor");
        static LLColor4 grid_color_shadow = gColors.getColor("GridlineShadowColor");

        LLColor4 line_color;
        F32 line_alpha = gSavedSettings.getF32("GridOpacity");

        switch(pass)
        {
        case 0:
                // shadow
                gViewerWindow->setupViewport(1, -1);
                line_color = grid_color_shadow;
                line_color.mV[VALPHA] *= line_alpha;
                LLUI::setLineWidth(2.f);
                break;
        case 1:
                // hidden lines
                gViewerWindow->setupViewport();
                line_color = grid_color_bg;
                line_color.mV[VALPHA] *= line_alpha;
                LLUI::setLineWidth(1.f);
                break;
        case 2:
                // visible lines
                line_color = grid_color_fg;
                line_color.mV[VALPHA] *= line_alpha;
                break;
        }

        return line_color;
}

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