OE_interfaceDisplay.cpp

/*
 * Copyright (c) 2015 Tricoire Sebastien 3dsman@free.fr
 *
 * This software is provided 'as-is', without any express or implied
 * warranty.  In no event will the authors be held liable for any damages
 * arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you must not
 * claim that you wrote the original software. If you use this software
 * in a product, an acknowledgment in the product documentation would be
 * appreciated but is not required.
 * 2. Altered source versions must be plainly marked as such, and must not be
 * misrepresented as being the original software.
 * 3. This notice may not be removed or altered from any source distribution.
 *
 */

#include "OE_interfaceDisplay.h"
#include "OE_utils.h"

#include "OE_controller.h"

#include <iostream>

#include <GL/gl.h>
#include <cstdlib>
#include <math.h>
#include <cstdio>
#include <cstring>
#include <algorithm> 

#include "actions/OE_actionsCurves.h"
#include "actions/OE_actionsStitchs.h"
#include "actions/OE_actionsLineStitchs.h"
#include "actions/OE_actionsBirailStitchs.h"
#include "actions/OE_actionsLinkStitchs.h"
#include "actions/OE_actionsSelection.h"
#include "actions/OE_actionsThreads.h"

#define TOOLSSELID 0
#define STITCHSSELID 1
#define CURVESSELID 2

#define ZEROID 0
#define TRANSTOOLID 1
#define MOVETOOLID 0
#define SCALETOOLID 1

OE_interfaceDisplay::OE_interfaceDisplay(OE_document* document)
{
	editStyle = new OE_display::OE_displayStyle();
	commandStyle = new OE_display::OE_displayStyle();
	commandStyle->drawGrid = false;
	commandStyle->drawCurves = false;
	commandStyle->drawStitches = false;
	commandStyle->drawCommands = true;
	setDisplayStyle(editStyle);
	setDocument(document);
}

OE_interfaceDisplay::~OE_interfaceDisplay()
{
	//delete curDisplay;
}

bool OE_interfaceDisplay::setDocument(OE_document * document)
{
	this->document = document;
    return true;
}


bool OE_interfaceDisplay::setController(OE_controller* controller)
{
	this->controller = controller;
    return true;
}

void OE_interfaceDisplay::showAll()
{
	OE_display::showAll();
}

void OE_interfaceDisplay::mouse_Pos(double x, double y)
{
    OE_display::mouse_Pos( x, y);

	vector_2dt oldClosestPoint = editClosestPoint;
	vector_2d absMove = vector_2d((mouse.x - clicOldMouse.x)*zoom*2,(mouse.y - clicOldMouse.y)*zoom*2);


	if(editionState == MoveSelection) //if the move action is enabled
	{
		 controller->editActionMoveSelection(vector_2d((mouse.x - clicOldMouse.x)*zoom*2,(mouse.y - clicOldMouse.y)*zoom*2));
		 return;
	}

	if(editionState == ScaleSelection) //if the scale action is enabled
	{
		vector_2d bbCenter = controller->getSelectionBoundingBox().getCenter();
		float scale = (absMouse-bbCenter).len()/(screenToDocument(clicOldMouse)-bbCenter).len();
		 controller->editActionScaleSelection(vector_2d(scale,scale));
		 return;
	}

	if (editSubcurve) //if we are working on a defined subcurve get the closest point on it
    {
        editClosestPoint = controller->getClosestPoint(editSubcurve->getCurve(),absMouse);
    }

	if ((editionState == NewSubcurve)) //if we must find the closest subcurve (get the closest point on it too)
    {
        closestCurve = controller->getClosestCurve(absMouse, editClosestPoint);
    }

	if ((selControlCurve)&&(selControlType == 0)) //if we're moving a curve control point
	{
        controller->editActionMovePointCurve(vector_2d((mouse.x - clicOldMouse.x)*zoom*2,(mouse.y - clicOldMouse.y)*zoom*2));
		return;
	}
	if (editionState == MovePointstitch) //if we're moving a linkstitch control point
	{
		controller->editActionMovePointLinkStitch(absMove);
		return;
	}
	if (selControlStitch) //if we're working on a stitch
    {
        OE_linestitch* tmpLineStitch = dynamic_cast<OE_linestitch*>(selControlStitch);
        OE_birailstitch* tmpBirailStitch = dynamic_cast<OE_birailstitch*>(selControlStitch);
		if ((tmpLineStitch)&&(editionState == OffsetWidthLinestitch)) //if this is a linestitch and we're picking the scaleWidth controler
		{
				controller->editActionSetLinestitchWidth((mouse.x - clicOldMouse.x)/100.0f, true);
				return;
		}
		//if we're define control curves for linestitch or birailstitch
        if (((tmpLineStitch)&&(selControlType == 0))||((tmpBirailStitch)&&((selControlType == 0)||(selControlType == 1))))
        {
            if (editionState == NewSubcurve)
            {
                editionState = TraceSubcurve;
                if(oldClosestPoint.t>editClosestPoint.t) controller->editActionAddSubcurvePosSwitchDir();
            }

            if (editionState == TraceSubcurve)
            {
                controller->editActionAddSubcurvePosEnd(editClosestPoint.t);
            }
            else
                controller->editActionSetSubcurvePos(editClosestPoint.t);
        }
    }

}

void OE_interfaceDisplay::mouse_Button(int button, int action, int mods)
{
    modState = mods;
	OE_display::mouse_Button(button, action, mods);
	if((curScreen == edit)&&(button == GLFW_MOUSE_BUTTON_LEFT)&&(action==GLFW_PRESS))
	{
		if(editionState == NewSubcurve)
        {
            if(!closestCurve)
			{
				editionState = None;
				return;
			}
            else
            {
                controller->addAction(new OE_actionJoincurveAddSubCurve(curJoincurve,-1,closestCurve,editClosestPoint.t,editClosestPoint.t,false));
                selControlStitch = controller->getStitch(-1);
                selControlType = 0;
                editSubcurve = curJoincurve->getCurve(-1);
				return;
            }
        }
        else
        {
			clicOldMouse = mouse;
			if(editionState == None)
				picking();
			if(editionState == None)
				editionState = Selection;
			return;
        }
    }

	if((curScreen == edit)&&(button == GLFW_MOUSE_BUTTON_LEFT)&&(action==GLFW_RELEASE))
	{
		//if(selControlCurve)selControlCurve = 0;
		//if(selControlStitch)selControlStitch = 0;
		selControlCurve = 0;
		selControlStitch = 0;

		if(editionState == Selection)
		{
			if ((mouse-clicOldMouse).len()>5)
				selectBox();

			selectApply(selectedCurves, selectedStitches);
			editionState = None;
		}

        if (editionState == TraceSubcurve)
        {
            editionState = NewSubcurve;
            editSubcurve = 0;
			return;
		}

		if((editionState == MoveSubcurve)||(editionState == MovePointcurve)||(editionState == MovePointstitch)||(editionState == DelPointstitch)||(editionState == MoveSelection)||(editionState = ScaleSelection))
		   editionState = None;
    }
}

void OE_interfaceDisplay::scroll(double xoffset, double yoffset)
{
	OE_display::scroll(xoffset, yoffset);
}

void OE_interfaceDisplay::resize(int width, int height)
{
	OE_display::resize(width, height);
}

void OE_interfaceDisplay::key(int key, int scancode, int action, int mods)
{

	const char* key_name = glfwGetKeyName(key, 0);
	if (!key_name) key_name = " ";

    modState = mods;
	if((action == GLFW_PRESS)&&(curScreen == edit))
    {
		if ((!strcmp(key_name, "z"))&&(mods == GLFW_MOD_CONTROL))
        {
			if (controller) controller->undoAction();
		}else if ((!strcmp(key_name, "s"))&&(mods == GLFW_MOD_CONTROL))
		{
			if (document) document->saveToFile("../roger.oe");
		}else if ((!strcmp(key_name, "o"))&&(mods == GLFW_MOD_CONTROL))
		{
			if (document) document->loadFromFile("../roger.oe");
		}else if ((!strcmp(key_name, "z"))&&(mods == GLFW_MOD_CONTROL+GLFW_MOD_SHIFT))
        {
			if (controller) controller->redoAction();
		}else if (mods == 0)
        {
			if (!strcmp(key_name, "c"))
            {
				if (controller) controller->toggleCloseSelectedCurve();
			}else if (!strcmp(key_name, "r"))
            {
				if (editionState == TraceSubcurve)
				{
					controller->editActionAddSubcurvePosSwitchDir();
				}else if (editionState == MoveSubcurve)
				{
					controller->editActionSetSubcurvePosSwitchDir();
				}
			}else if (key == GLFW_KEY_DELETE)
			{
				//TODO create an action to delete all selected stitches
				std::list<OE_stitchs*>::iterator it=selectedStitches.begin();
				controller->addAction(new OE_actionDelStitch(*it));
			}else if (key == GLFW_KEY_RIGHT)
			{
				std::list<OE_stitchs*>::iterator it=selectedStitches.begin();
				if (it != selectedStitches.end())
				{
					it = find (document->stitchs.begin(), document->stitchs.end(), *it);
					it++;
					if (it != selectedStitches.end())
					{
						selectedStitches.clear();
						selectedStitches.push_back(*it);
						controller->clearSelection();
						controller->selectStitches(selectedStitches,true);
					}
				}
			}
		}
	}

    if(action == GLFW_RELEASE)
	{
		if((curScreen == command)&&(key == GLFW_KEY_SPACE)) run=true;
		if(key == GLFW_KEY_F5)
        {
			if(curScreen == edit)
			{
				curScreen = command;
				setDisplayStyle(commandStyle);
            }
			else
			{
				curScreen = edit;
				setDisplayStyle(editStyle);
			}
		}else if(!strcmp(key_name, "l"))
        {
            if (controller)
            {
				controller->newLineStitch(2.5,2.5,controller->getPattern(0));
                document->selectedStitchs.push_back(controller->getLineStitch(-1));
                curJoincurve = controller->getLineStitch(-1)->getJoincurve();
                closestCurve = controller->getClosestCurve(absMouse, editClosestPoint);

                editionState = NewSubcurve;
                joincurve_id = 0;
            }
		}else if(!strcmp(key_name, "b"))
        {
            if (controller)
            {
                controller->newBirailStitch(false, false, 0,0,0.7);
                document->selectedStitchs.push_back(controller->getBirailStitch(-1));
                curJoincurve = controller->getBirailStitch(-1)->getJoincurve1();
                closestCurve = controller->getClosestCurve(absMouse, editClosestPoint);

                editionState = NewSubcurve;
                joincurve_id = 1;
            }
		}else if(key == GLFW_KEY_ENTER)
        {
            if(editionState == NewSubcurve)
            {
                if (joincurve_id == 0)
                {
                    editionState = None;
                    curJoincurve = 0;
                }else
                {
                    curJoincurve = controller->getBirailStitch(-1)->getJoincurve2();
                    closestCurve = controller->getClosestCurve(absMouse, editClosestPoint);
                    joincurve_id -= 1;
                }
            }
		}else if (!strcmp(key_name, "r"))
            {
            if (editionState == TraceSubcurve)
            {
                controller->editActionAddSubcurvePosSwitchDir();
            }else if (editionState == MoveSubcurve)
                controller->editActionSetSubcurvePosSwitchDir();
		}else if (key == GLFW_KEY_KP_ADD)
		{
			if(mods == GLFW_MOD_CONTROL)
			{
				controller->addAction(new OE_actionScaleSelectedLineStitchLen(1.1));
				controller->addAction(new OE_actionScaleSelectedBirailStitchLen(1.1));
			}
			else
				controller->addAction(new OE_actionScaleSelectedLineStitchWidth(1.1));
		}else if (key == GLFW_KEY_KP_SUBTRACT)
		{
			if(mods == GLFW_MOD_CONTROL)
			{
				controller->addAction(new OE_actionScaleSelectedLineStitchLen(1/1.1));
				controller->addAction(new OE_actionScaleSelectedBirailStitchLen(1/1.1));
			}
			else
				controller->addAction(new OE_actionScaleSelectedLineStitchWidth(1/1.1));

		}else if (key == GLFW_KEY_KP_1)
		{
			controller->addAction(new OE_actionSetSelectedLineStitchPattern(controller->getPattern(0)));
		}else if (key == GLFW_KEY_KP_2)
		{
			controller->addAction(new OE_actionSetSelectedLineStitchPattern(controller->getPattern(1)));
		}else if (key == GLFW_KEY_KP_3)
		{
			controller->addAction(new OE_actionSetSelectedLineStitchPattern(controller->getPattern(2)));
		}else if (key == GLFW_KEY_KP_4)
		{
			controller->addAction(new OE_actionSetSelectedLineStitchPattern(controller->getPattern(3)));
		}else if (key == GLFW_KEY_KP_5)
		{
			controller->addAction(new OE_actionSetSelectedLineStitchPattern(controller->getPattern(4)));
		}else if (key == GLFW_KEY_KP_6)
		{
			controller->addAction(new OE_actionSetSelectedLineStitchPattern(controller->getPattern(5)));
		}else if (key == GLFW_KEY_KP_7)
		{
			controller->addAction(new OE_actionSetSelectedLineStitchPattern(controller->getPattern(6)));
		}else if (key == GLFW_KEY_KP_8)
		{
			controller->addAction(new OE_actionSetSelectedLineStitchPattern(controller->getPattern(7)));
		}else if (key == GLFW_KEY_KP_9)
		{
			controller->addAction(new OE_actionSetSelectedLineStitchPattern(controller->getPattern(8)));
		}

		if(key == GLFW_KEY_HOME)
		{
			zoomSelection();
		}
    }

	//OE_display::key( key,  scancode,  action,  mods);
}

bool OE_interfaceDisplay::selectBox()
{
    selectedCurves.clear();
    selectedStitches.clear();
    vector_2d clicAbsMouse = viewPos+(clicOldMouse-vector_2d(width,height)/2)*zoom*2;
    float tmpXMin, tmpYMin, tmpXMax, tmpYMax;

    std::list<OE_pointcurve*>::iterator curve = document->curves.begin();
    while (curve != document->curves.end())
    {
         BoundingBox box = (*curve)->getBound();
         if ((box.getMin().x>minf(clicAbsMouse.x,absMouse.x))
             &&(box.getMax().x<maxf(clicAbsMouse.x,absMouse.x))
             &&(box.getMin().y>minf(clicAbsMouse.y,absMouse.y))
             &&(box.getMax().y<maxf(clicAbsMouse.y,absMouse.y)))
             selectedCurves.push_back(*curve);
         curve++;
    }

    std::list<OE_stitchs*>::iterator stitch = document->stitchs.begin();
    while (stitch != document->stitchs.end())
    {

         BoundingBox box = (*stitch)->getBound();
         if ((box.getMin().x>minf(clicAbsMouse.x,absMouse.x))
             &&(box.getMax().x<maxf(clicAbsMouse.x,absMouse.x))
             &&(box.getMin().y>minf(clicAbsMouse.y,absMouse.y))
			 &&(box.getMax().y<maxf(clicAbsMouse.y,absMouse.y)))
             selectedStitches.push_back(*stitch);
         stitch++;
    }

}


bool OE_interfaceDisplay::checkPicking()
{
	if(toolAction)
	{
		if(toolAction == 1)
		{
			editionState = MoveSelection;
			return controller->addAction(new OE_actionMoveSelection(vector_2d(0,0)));
		}
		if(toolAction == 2)
		{
			editionState = ScaleSelection;
			return controller->addAction(new OE_actionScaleSelection(vector_2d(1,1), controller->getSelectionBoundingBox().getCenter()));
		}
	}
    if(selControlStitch)
	{
        OE_linestitch* tmpLineStitch = dynamic_cast<OE_linestitch*>(selControlStitch);

		if (tmpLineStitch)
		{
			if(selControlType == 0)
			{
				// get the corresponding subcurve
				editSubcurve = tmpLineStitch->getJoincurve()->getCurve(selControlIndex/2);
				if (editSubcurve)
				{
					editionState = MoveSubcurve;
					// get the closest point t value
					vector_2dt pos = editSubcurve->getCurve()->closestPoint(absMouse);
					// and add an action to move the point
					controller->addAction(new OE_actionSetSubcurvePos( editSubcurve, selControlIndex%2, pos.t));
					return true;
				}
				return false;
			}
			if ((selControlType == 1)&&(selControlIndex==0))
			{
				editionState = OffsetWidthLinestitch;
				controller->addAction(new OE_actionSetLineStitchWidth(tmpLineStitch,tmpLineStitch->getWidth()));
				return true;
			}
		}


        OE_birailstitch* tmpBirailStitch = dynamic_cast<OE_birailstitch*>(selControlStitch);

        if ((tmpBirailStitch)&&((selControlType == 0)||(selControlType == 1)))
        {
            // get the corresponding subcurve
            if (selControlType == 0)
                editSubcurve = tmpBirailStitch->getJoincurve1()->getCurve(selControlIndex/2);
            else if(selControlType == 1)
                editSubcurve = tmpBirailStitch->getJoincurve2()->getCurve(selControlIndex/2);

            if (editSubcurve)
            {
				editionState = MoveSubcurve;
                // get the closest point t value
                vector_2dt pos = editSubcurve->getCurve()->closestPoint(absMouse);
                // and add an action to move the point
				controller->addAction(new OE_actionSetSubcurvePos( editSubcurve, selControlIndex%2, pos.t));
                return true;
            }
            return false;
        }

		OE_linkstitch* tmpLinkStitch = dynamic_cast<OE_linkstitch*>(selControlStitch);

		if ((tmpLinkStitch)&&((selControlType == 0)||(selControlType == 1)||(selControlType == 2)))
		{
			if (selControlType == 0)
			{
				editionState = MovePointstitch;
				controller->addAction(new OE_actionMovePointLinkStitch(tmpLinkStitch, selControlIndex, vector_2d()));
			}else if (selControlType == 1)
			{
				editionState = MovePointstitch;
				controller->addAction(new OE_actionAddPointLinkStitch(tmpLinkStitch, selControlIndex, absMouse));
			}else if (selControlType == 2)
			{
				editionState = DelPointstitch;
				controller->addAction(new OE_actionDelPointLinkStitch(tmpLinkStitch, selControlIndex));
			}
			return false;
		}
		selControlStitch = 0;
	}

    if(selControlCurve)
	{
        OE_pointcurve* tmpPointCurve = dynamic_cast<OE_pointcurve*>(selControlCurve);

        if ((tmpPointCurve)&&(selControlType == 0))
        {
			editionState = MovePointcurve;
			return controller->addAction(new OE_actionMovePointCurve( tmpPointCurve, selControlIndex + 1, vector_2d(0,0)));
        }
        selControlCurve = 0;

		return true;
	}
}

/** \brief set selection
 *
 * \return true if all is ok
 *
 */

bool OE_interfaceDisplay::picking()
{
	GLuint selectBuf[64];
	GLint hits;

	glSelectBuffer(64, selectBuf);

	draw(true);
	hits = glRenderMode(GL_RENDER);

	selectedCurves.clear();
	selectedStitches.clear();
	toolAction = 0;

    GLuint i, nb_names, name, *ptr;

	//std::cout<<"hits : "<<"\r\n";
	ptr = (GLuint *) selectBuf;
	for (GLuint i = 0; i < hits; i++)  //  for each hit
	{
		bool recognized = false;
		GLuint names = *ptr;

		ptr+=3; //jump near and far info and goto first index
		if (*ptr == TOOLSSELID) //tools picking
		{
			ptr++;
			if(*ptr == ZEROID) //zero
			{
			}
			if(*ptr == TRANSTOOLID) //one of the transform selection tools
			{
				ptr++;
				if(*ptr == MOVETOOLID) //move selection tools
				{
					toolAction = 1;
					checkPicking();
					return true;
				}
				if(*ptr == SCALETOOLID) //scale selection tools
				{
					toolAction = 2;
					checkPicking();
					return true;
				}
			}
			return false;
			//ptr++;
		}else if (*ptr == STITCHSSELID) //stitch picking
		{
			ptr++;
			if (names==2) //if name count correspond to an object (we picked a stitch, not one of his sub element)
			{
				if (*ptr >= document->stitchs.size()) return false;

				std::list<OE_stitchs*>::iterator it = document->stitchs.begin();
				std::advance(it, *ptr);
				selectedStitches.push_back(*it);
				return true;

			} else if (names==4) //if name count correspond to a stitch sub element (like control point)
			{
				if(*ptr >= document->selectedStitchs.size()) return false;

				std::list<OE_stitchs*>::iterator it = document->selectedStitchs.begin();
				std::advance(it, *ptr++);
				selControlStitch = *it;
				selControlType = *ptr++;
				selControlIndex = *ptr++;

				checkPicking();
				return true;
			}
		}else if (*ptr == CURVESSELID) //curves picking
		{
			ptr++;
			if (names==2) //if name count correspond to an object (we picked a curve, not one of his sub element)
			{
				if (*ptr >= document->curves.size()) return false;

				std::list<OE_pointcurve*>::iterator it = document->curves.begin();
				std::advance(it, *ptr);
				selectedCurves.push_back(*it);
				return true;
			} else if (names==4) //if name count correspond to a sub element of curve (like control point)
			{
				if(*ptr >= document->selectedCurves.size()) return false;

				//in *ptr we got "curve id" then "control type" and at last "control id"
				std::list<OE_pointcurve*>::iterator it = document->selectedCurves.begin();
				std::advance(it, *ptr++);
				selControlCurve = *it;
				selControlType = *ptr++;
				selControlIndex = *ptr++;

				checkPicking();

				return true;
			}
		}
	}

	return true;
}

bool OE_interfaceDisplay::selectApply(std::list<OE_pointcurve*> selectedCurves, std::list<OE_stitchs*> selectedStitches)
{
    if(selectedCurves.size())
        if(modState&GLFW_MOD_CONTROL)
            controller->unselectCurves(selectedCurves);
        else
            controller->selectCurves(selectedCurves, !(modState&GLFW_MOD_SHIFT));

    if(selectedStitches.size())
        if(modState&GLFW_MOD_CONTROL)
            controller->unselectStitches(selectedStitches);
        else
            controller->selectStitches(selectedStitches, !(modState&GLFW_MOD_SHIFT));

    if(!(selectedStitches.size())&&!(selectedCurves.size()))
    {
        controller->clearSelection();
    }

    return true;
}

/** \brief draw the document on screen
 *
 * \return true if all is ok
 *
 */

bool OE_interfaceDisplay::draw()
{
    draw(false);
}

/** \brief draw the document on screen
 *
 * \return true if all is ok
 *
 */

bool OE_interfaceDisplay::draw(bool select)
{
	if (run) controller->sendInstPoint();
    if (select)
    {
        glRenderMode(GL_SELECT);
        //Init of name stack
        glInitNames();
        glPushName(0);
    }
	float wzoom, hzoom;
	
	glViewport(0, 0, width, height);
    glClearColor(220.0f/255.0f, 220.0f/255.0f, 220.0f/255.0f, 1.0f);

	glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
	glEnable(GL_BLEND);
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	glDisable(GL_TEXTURE_2D);
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();

    glEnd();

	wzoom = (float)width*zoom;
	hzoom = (float)height*zoom;

    if(select)
        glOrtho(absMouse.x-7*zoom, absMouse.x+7*zoom, absMouse.y+7*zoom, absMouse.y-7*zoom, -1, 1);
    else
        glOrtho(viewPos.x-wzoom, viewPos.x+wzoom, viewPos.y+hzoom, viewPos.y-hzoom, -1, 1);
	

	glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();
	glDisable(GL_DEPTH_TEST);
	glColor4ub(255,255,255,255);
	glEnable(GL_BLEND);
	glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
	
	if (document)
    {
		if(select && (curScreen == edit))
			OE_display::select(document->selectedCurves, document->selectedStitchs);
        else
			OE_display::draw();
    }

    if(!select)
    {
        if (editionState==NewSubcurve)
        {
            // Points
            glPointSize(5.0f);

            glBegin(GL_POINTS);
            if (joincurve_id == 0)
                glColor4d(0.8f, 0.0f, 0.0f, 1.0f);
            else
                glColor4d(0.0f, 0.8f, 0.0f, 1.0f);
            glVertex2f(editClosestPoint.v.x,editClosestPoint.v.y);
            glEnd();
        }

        // cursor cross
        glLineWidth(1.5);
        glBegin(GL_LINES);
            if (editionState)
            {
                if (joincurve_id == 0)
                    glColor4d(0.8f, 0.0f, 0.0f, 0.5f);
                else
                    glColor4d(0.0f, 0.8f, 0.0f, 0.5f);
            }else
                glColor4d(0.0f, 0.0f, 0.0f, 0.3f);
            glVertex2f(absMouse.x,-10000);
            glVertex2f(absMouse.x,10000);

            glVertex2f(-10000,absMouse.y);
            glVertex2f(10000,absMouse.y);
        glEnd();

        //cursor select zone
        glLineWidth(2);
		glBegin(GL_LINE_LOOP);
            glColor4d(0.0f, 0.0f, 0.0f, 0.3f);
            glVertex2f(absMouse.x-5*zoom,absMouse.y+5*zoom);
            glVertex2f(absMouse.x-5*zoom,absMouse.y-5*zoom);
            glVertex2f(absMouse.x+5*zoom,absMouse.y-5*zoom);
			glVertex2f(absMouse.x+5*zoom,absMouse.y+5*zoom);
        glEnd();

		if(editionState == Selection)
        {
			vector_2d clicAbsMouse = viewPos+(clicOldMouse-vector_2d(width,height)/2)*zoom*2;
            glLineWidth(2);
            glBegin(GL_LINE_STRIP);
                glColor4d(0.0f, 0.0f, 0.0f, 0.3f);
                glVertex2f(absMouse.x,clicAbsMouse.y);
                glVertex2f(absMouse.x,absMouse.y);
                glVertex2f(clicAbsMouse.x,absMouse.y);
                glVertex2f(clicAbsMouse.x,clicAbsMouse.y);
                glVertex2f(absMouse.x,clicAbsMouse.y);
            glEnd();
        }
    }
	return true;
}