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graphwidget.cpp
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graphwidget.cpp
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///////////////////////////////////////////////////////////////////////
// Class GraphWidget Implementation
//
// GraphWidget is responsible for curve display. GraphWidget creates 5
// curve evaluators in its constructor. Replace some of them with the
// new curve evaluators.
///////////////////////////////////////////////////////////////////////
#pragma warning(disable : 4786)
#ifdef WIN32
#include <windows.h>
#endif
#ifdef _DEBUG
#include <assert.h>
#endif // _DEBUG
#include <GL/gl.h>
#include <GL/glu.h>
#include <cmath>
#include <cstdio>
#include <algorithm>
#include <float.h>
#include <fstream>
#include "curve.h"
#include "GraphWidget.h"
#include "vec.h"
#include "LinearCurveEvaluator.h"
#include "catnullromcurve.h"
#include "beziercurve.h"
#include "bsplinecurve.h"
#include "c2interpolatingcurve.h"
#include "subdivisioncurve.h"
#define LEFT 1
#define MIDDLE 2
#define RIGHT 3
#define LEFT_MOUSE_DOWN 1
#define LEFT_MOUSE_DRAG 2
#define LEFT_MOUSE_UP 3
#define MIDDLE_MOUSE_DOWN 4
#define MIDDLE_MOUSE_DRAG 5
#define MIDDLE_MOUSE_UP 6
#define RIGHT_MOUSE_DOWN 7
#define RIGHT_MOUSE_DRAG 8
#define RIGHT_MOUSE_UP 9
#define SHIFT_LEFT_DOWN 10
#define SHIFT_LEFT_DRAG 11
#define SHIFT_LEFT_UP 12
#define SHIFT_MIDDLE_DOWN 13
#define SHIFT_MIDDLE_DRAG 14
#define SHIFT_MIDDLE_UP 15
#define SHIFT_RIGHT_DOWN 16
#define SHIFT_RIGHT_DRAG 17
#define SHIFT_RIGHT_UP 18
#define CTRL_LEFT_DOWN 19
#define CTRL_LEFT_DRAG 20
#define CTRL_LEFT_UP 21
#define CTRL_MIDDLE_DOWN 22
#define CTRL_MIDDLE_DRAG 23
#define CTRL_MIDDLE_UP 24
#define CTRL_RIGHT_DOWN 25
#define CTRL_RIGHT_DRAG 26
#define CTRL_RIGHT_UP 27
#define ALT_LEFT_DOWN 28
#define ALT_LEFT_DRAG 29
#define ALT_LEFT_UP 30
#define GRID_BACKGROUND_INTENSITY 0.65f
#define CURR_CURVE_INTENSITY 1.0f
#define DIMMED_CURVE_INTENSITY 0.45f
#define GRID_LINE_INTENSITY 0.85f
#define GRID_SHADOW_INTENSITY 0.15f
#define PICK_WINDOW_SIZE 9
// Curve colors. Note that these are consistent with
// Fl_Color so that the browser can show the same
// colors as the curves
static const unsigned char byvvColors[CURVE_COLOR_COUNT][3] = {
{ 204, 204, 204 }, // gray So this one is NOT consistent, on account of the updated UI.
{ 255, 0, 0 }, // red
{ 0, 255, 0 }, // green
/* { 255, 255, 0 }, */ // can't use yellow because FLTK will change it to black in the browser
{ 0, 0, 255 }, // blue
{ 255, 0, 255 }, // magenta
{ 0, 255, 255 }, // cyan
};
static const Fl_Color flcvColors[CURVE_COLOR_COUNT] = {
FL_BLACK,
FL_RED,
FL_GREEN,
FL_BLUE,
FL_MAGENTA,
FL_CYAN
};
const static float ks_fViewportMargin = 0.01f;
GraphWidget::GraphWidget(int x, int y, int w, int h, const char *label) :
Fl_Gl_Window(x, y, w, h, label),
m_bHasCtrlPtSelection(false),
m_bHasZoomSelection(false),
m_ivvCurrCtrlPts(),
m_ppceCurveEvaluators(NULL),
m_pcrvvCurves(),
m_ivCurveTypes(),
m_iCurrCurve(-1),
m_ivActiveCurves(),
m_fEndTime(20.0f),
m_fCurrTime(0.0f),
m_rectCurrViewport(0.0f - ks_fViewportMargin, 1.0f + ks_fViewportMargin, 0.0f - ks_fViewportMargin, 1.0f + ks_fViewportMargin),
m_bPanning(false),
m_bHasEvent(false),
m_bLButtonDown(false),
m_bRButtonDown(false),
m_flcCurrCurve(FL_BLACK)
{
m_ppceCurveEvaluators = new CurveEvaluator*[CURVE_TYPE_COUNT];
m_ppceCurveEvaluators[CURVE_TYPE_LINEAR] = new LinearCurveEvaluator();
// TODO: replace the linear evaluator for one of the three types of curves
m_ppceCurveEvaluators[CURVE_TYPE_BSPLINE] = new BSplineCurveEvaluator();
m_ppceCurveEvaluators[CURVE_TYPE_BEZIER] = new BezierCurveEvaluator();
m_ppceCurveEvaluators[CURVE_TYPE_CATMULLROM] = new CatnullRomEvaluator();
// Note that C2-Interpolating curve is not a requirement
m_ppceCurveEvaluators[CURVE_TYPE_C2INTERPOLATING] = new C2InterpolatingEvaluator();
m_ppceCurveEvaluators[CURVE_TYPE_SUBDIVISION] = new SubdivisionCurveEvaluator();
}
GraphWidget::~GraphWidget()
{
for (int iCurve = 0; iCurve < m_pcrvvCurves.size(); ++iCurve) {
delete m_pcrvvCurves[iCurve];
}
for (int i = 0; i < CURVE_TYPE_COUNT; ++i) {
delete m_ppceCurveEvaluators[i];
}
delete[] m_ppceCurveEvaluators;
}
int GraphWidget::addCurve(const float fStartVal, const float fMinY, const float fMaxY)
{
Curve* pcrv = new Curve(m_fEndTime, fStartVal);
pcrv->setEvaluator(m_ppceCurveEvaluators[CURVE_TYPE_LINEAR]);
m_pcrvvCurves.push_back(pcrv);
m_cdvCurveDomains.push_back(CurveDomain(fMinY, fMaxY));
m_ivCurveTypes.push_back(CURVE_TYPE_LINEAR);
m_ivvCurrCtrlPts.push_back(std::vector<int>());
return m_pcrvvCurves.size() - 1;
}
void GraphWidget::curveType(int iCurve, int iCurveType)
{
if (iCurve >= 0 && iCurve < m_pcrvvCurves.size() &&
iCurveType >= 0 && iCurveType < CURVE_TYPE_COUNT) {
m_pcrvvCurves[iCurve]->setEvaluator(m_ppceCurveEvaluators[iCurveType]);
m_ivCurveTypes[iCurve] = iCurveType;
m_pcrvvCurves[iCurve]->invalidate();
}
else {
#ifdef _DEBUG
assert(0);
#endif // _DEBUG
}
}
void GraphWidget::currCurveType(int iCurveType)
{
if (m_iCurrCurve >= 0 &&
iCurveType >= 0 && iCurveType < CURVE_TYPE_COUNT) {
m_pcrvvCurves[m_iCurrCurve]->setEvaluator(m_ppceCurveEvaluators[iCurveType]);
m_ivCurveTypes[m_iCurrCurve] = iCurveType;
m_pcrvvCurves[m_iCurrCurve]->invalidate();
}
}
int GraphWidget::currCurveType() const
{
if (m_iCurrCurve >= 0) {
return m_ivCurveTypes[m_iCurrCurve];
}
return -1;
}
void GraphWidget::draw()
{
if (!valid()) {
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glViewport(0, 0, w(), h());
glClearColor(GRID_BACKGROUND_INTENSITY, GRID_BACKGROUND_INTENSITY, GRID_BACKGROUND_INTENSITY, 0.0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
}
glClear(GL_COLOR_BUFFER_BIT);
glColor3d(0,0,0);
glBegin(GL_POLYGON);
glVertex2d( -w(), -h() );
glVertex2d( -w(), h() );
glVertex2d( w(), h() );
glVertex2d( w(), -h() );
glEnd();
/************************************************************************************/
//The grid.. We're copying this from rulerwindow class.
//Really to two should have a single reference function.
double dRangeX = rightTime() - leftTime();
double dRangeY = (rightTime() - leftTime());
int iWindowWidth = w();
int iWindowHeight = h();
const int k_iAvgLongMarkLen = 15;
int iLongMarkCountX = iWindowWidth / k_iAvgLongMarkLen;
int iLongMarkCountY = iWindowHeight / k_iAvgLongMarkLen;
if (iLongMarkCountX > 0 && iWindowWidth > 0) {
// Computer the long mark length so that it's 10^i where i is an integer
double dLongMarkLengthX = dRangeX / (double)iLongMarkCountX;
double dLongMarkLengthPowX = log10(dLongMarkLengthX);
int iLongMarkLengthPowX = (int)ceil(dLongMarkLengthPowX);
dLongMarkLengthX = pow(10.0, (double)iLongMarkLengthPowX);
double dLongMarkLengthY = dRangeY / (double)iLongMarkCountY;
double dLongMarkLengthPowY = log10(dLongMarkLengthY);
int iLongMarkLengthPowY = (int)ceil(dLongMarkLengthPowY);
dLongMarkLengthY = pow(10.0, (double)iLongMarkLengthPowY);
int iStartX = (int)ceil(leftTime() / dLongMarkLengthX);
int iMarkX, iMarkY;
double x,y;
glColor3d(1,1,1);
glPointSize(0.5);
glBegin(GL_POINTS);
do {
iMarkX = 2*(int)(((double)iStartX * dLongMarkLengthX - leftTime()) / dRangeX * (double)iWindowWidth + 0.5) - w();
x = (double)iMarkX / w();
int iStartY = (int)ceil(leftTime() / dLongMarkLengthY);
do{
iMarkY = 2*(int)(((double)iStartY * dLongMarkLengthY - leftTime()) / dRangeY * (double)iWindowHeight + 0.5) - h();
y = (double)iMarkY / h();
glVertex2d(x,y);
++iStartY;
} while (iMarkY < iWindowHeight);
++iStartX;
} while (iMarkX < iWindowWidth);
glEnd();
}
/************************************************************************************/
if (m_bHasEvent) {
m_bHasEvent = false;
switch (m_iEventToDo) {
case LEFT_MOUSE_DOWN:
selectAddCtrlPt(m_iMouseX, m_iMouseY);
break;
case LEFT_MOUSE_DRAG:
dragCtrlPt(m_iMouseX, m_iMouseY);
break;
case LEFT_MOUSE_UP:
break;
case ALT_LEFT_DOWN:
startCtrlPtSelection(m_iMouseX, m_iMouseY);
break;
case ALT_LEFT_DRAG:
doCtrlPtSelection(m_iMouseX, m_iMouseY);
break;
case ALT_LEFT_UP:
endCtrlPtSelection(m_iMouseX, m_iMouseY);
break;
case CTRL_LEFT_DOWN:
selectCurrCurve(m_iMouseX, m_iMouseY);
break;
case SHIFT_LEFT_DOWN:
removeCtrlPt(m_iMouseX, m_iMouseY);
break;
case RIGHT_MOUSE_DOWN:
break;
case RIGHT_MOUSE_DRAG:
doZoom(m_iMouseDX, m_iMouseDY);
break;
case RIGHT_MOUSE_UP:
break;
case SHIFT_RIGHT_DOWN:
break;
case SHIFT_RIGHT_DRAG:
m_bPanning = true;
doPan(m_iMouseDX, m_iMouseDY);
break;
case SHIFT_RIGHT_UP:
m_bPanning = false;
break;
case CTRL_RIGHT_DOWN:
startZoomSelection(m_iMouseX, m_iMouseY);
break;
case CTRL_RIGHT_DRAG:
doZoomSelection(m_iMouseX, m_iMouseY);
break;
case CTRL_RIGHT_UP:
endZoomSelection(m_iMouseX, m_iMouseY);
break;
default:
break;
}
do_callback();
}
drawTimeBar();
drawActiveCurves();
drawZoomSelectionMap();
drawSelectionRect();
}
int GraphWidget::handle(int event)
{
switch (event) {
case FL_PUSH:
m_iMouseX = Fl::event_x();
m_iMouseY = Fl::event_y();
switch (Fl::event_button()) {
case LEFT:
if (!m_bLButtonDown) {
if (Fl::event_state(FL_SHIFT))
m_iEventToDo = SHIFT_LEFT_DOWN;
else if (Fl::event_state(FL_CTRL))
m_iEventToDo = CTRL_LEFT_DOWN;
else if (Fl::event_state(FL_ALT))
m_iEventToDo = ALT_LEFT_DOWN;
else
m_iEventToDo = LEFT_MOUSE_DOWN;
m_bLButtonDown = true;
m_bHasEvent = true;
}
break;
case RIGHT:
if (!m_bRButtonDown) {
if (Fl::event_state(FL_SHIFT))
m_iEventToDo = SHIFT_RIGHT_DOWN;
else if (Fl::event_state(FL_CTRL))
m_iEventToDo = CTRL_RIGHT_DOWN;
else
m_iEventToDo = RIGHT_MOUSE_DOWN;
m_bRButtonDown = true;
m_bHasEvent = true;
}
break;
}
if (m_bHasEvent)
redraw();
break;
case FL_DRAG:
m_iMouseDX = Fl::event_x() - m_iMouseX;
m_iMouseDY = Fl::event_y() - m_iMouseY;
m_iMouseX = Fl::event_x();
m_iMouseY = Fl::event_y();
if (m_bLButtonDown) {
if (Fl::event_state(FL_SHIFT))
m_iEventToDo = SHIFT_LEFT_DRAG;
else if (Fl::event_state(FL_CTRL))
m_iEventToDo = CTRL_LEFT_DRAG;
else if (Fl::event_state(FL_ALT))
m_iEventToDo = ALT_LEFT_DRAG;
else
m_iEventToDo = LEFT_MOUSE_DRAG;
m_bHasEvent = true;
}
else if (m_bRButtonDown) {
if (Fl::event_state(FL_SHIFT))
m_iEventToDo = SHIFT_RIGHT_DRAG;
else if (Fl::event_state(FL_CTRL))
m_iEventToDo = CTRL_RIGHT_DRAG;
else
m_iEventToDo = RIGHT_MOUSE_DRAG;
m_bHasEvent = true;
}
if (m_bHasEvent) {
redraw();
}
break;
case FL_RELEASE:
m_iMouseX = Fl::event_x();
m_iMouseY = Fl::event_y();
switch (Fl::event_button()) {
case LEFT:
if (m_bLButtonDown) {
if (Fl::event_state(FL_SHIFT))
m_iEventToDo = SHIFT_LEFT_UP;
else if (Fl::event_state(FL_CTRL))
m_iEventToDo = CTRL_LEFT_UP;
else if (Fl::event_state(FL_ALT))
m_iEventToDo = ALT_LEFT_UP;
else
m_iEventToDo = LEFT_MOUSE_UP;
m_bLButtonDown = false;
m_bHasEvent = true;
}
break;
case RIGHT:
if (m_bRButtonDown) {
if (Fl::event_state(FL_SHIFT))
m_iEventToDo = SHIFT_RIGHT_UP;
else if (Fl::event_state(FL_CTRL))
m_iEventToDo = CTRL_RIGHT_UP;
else
m_iEventToDo = RIGHT_MOUSE_UP;
m_bRButtonDown = false;
m_bHasEvent = true;
}
break;
}
if (m_bHasEvent) {
redraw();
}
break;
default:
return Fl_Gl_Window::handle(event);
}
return 1;
}
float GraphWidget::topValue() const
{
if (m_iCurrCurve >= 0) {
return m_rectCurrViewport.top() * m_cdvCurveDomains[m_iCurrCurve].mag() +
m_cdvCurveDomains[m_iCurrCurve].minimum();
}
else {
return FLT_MAX;
}
}
float GraphWidget::bottomValue() const
{
if (m_iCurrCurve >= 0) {
return m_rectCurrViewport.bottom() * m_cdvCurveDomains[m_iCurrCurve].mag() +
m_cdvCurveDomains[m_iCurrCurve].minimum();
}
else {
return -FLT_MAX;
}
}
float GraphWidget::leftTime() const
{
return m_fEndTime * m_rectCurrViewport.left();
}
float GraphWidget::rightTime() const
{
return m_fEndTime * m_rectCurrViewport.right();
}
float GraphWidget::currTime() const
{
return m_fCurrTime;
}
void GraphWidget::currTime(float fCurrTime)
{
if (fCurrTime >= 0.0f && fCurrTime <= m_fEndTime)
m_fCurrTime = fCurrTime;
else {
}
}
float GraphWidget::endTime() const
{
return m_fEndTime;
}
void GraphWidget::endTime(const float fEndTime)
{
if (fEndTime > 0.0) {
m_fEndTime = fEndTime;
for (int i = 0; i < m_pcrvvCurves.size(); ++i) {
m_pcrvvCurves[i]->maxX(m_fEndTime);
}
invalidateAllCurves();
}
}
void GraphWidget::scaleTime(const float fScale)
{
for (int i = 0; i < m_pcrvvCurves.size(); ++i) {
m_pcrvvCurves[i]->scaleX(fScale);
}
invalidateAllCurves();
}
void GraphWidget::selectCurrCurve(const int iMouseX, const int iMouseY)
{
Point ptMouse(iMouseX, iMouseY);
for (int i = 0; i < m_ivActiveCurves.size(); ++i) {
int iCurve = m_ivActiveCurves[i];
Point ptMouseInCurveCoord = windowToCurve(iCurve, ptMouse);
Point ptClosestPt;
m_pcrvvCurves[iCurve]->getClosestPoint(ptMouseInCurveCoord, ptClosestPt);
Point ptClosestPtInWindowCoord = curveToWindow(iCurve, ptClosestPt);
// select this curve if the mouse cursor is close enough
if (fabs(ptClosestPtInWindowCoord.x - ptMouse.x) * 2 <= PICK_WINDOW_SIZE &&
fabs(ptClosestPtInWindowCoord.y - ptMouse.y) * 2 <= PICK_WINDOW_SIZE) {
m_iCurrCurve = iCurve;
return;
}
}
}
void GraphWidget::selectAddCtrlPt(const int iMouseX, const int iMouseY)
{
if (m_iCurrCurve >= 0) {
Point ptMouse(iMouseX, iMouseY);
Point ptCtrlPt;
m_ptDragStart = ptMouse;
// find the closest control point
Point ptMouseInCurveCoord = windowToCurve(m_iCurrCurve, ptMouse);
int iClosestCtrlPt = m_pcrvvCurves[m_iCurrCurve]->getClosestControlPoint(ptMouseInCurveCoord, ptCtrlPt);
Point ptCtrlPtInWindowCoord = curveToWindow(m_iCurrCurve, ptCtrlPt);
if (fabs(ptCtrlPtInWindowCoord.x - ptMouse.x) * 2 <= PICK_WINDOW_SIZE &&
fabs(ptCtrlPtInWindowCoord.y - ptMouse.y) * 2 <= PICK_WINDOW_SIZE) {
if (std::find(m_ivvCurrCtrlPts[m_iCurrCurve].begin(),
m_ivvCurrCtrlPts[m_iCurrCurve].end(),
iClosestCtrlPt) != m_ivvCurrCtrlPts[m_iCurrCurve].end()) {
// the point is one of the currently selected points. do nothing
return;
}
else {
deselectCtrlPts();
// select the control point
m_ivvCurrCtrlPts[m_iCurrCurve].push_back(iClosestCtrlPt);
return;
}
}
// no control point is near the mouse cursor
// see if it's a currently selected control point
for (int i = 0; i < m_ivActiveCurves.size(); ++i) {
int iCurve = m_ivActiveCurves[i];
Point ptMouseInCurveCoord = windowToCurve(iCurve, ptMouse);
int iClosestCtrlPt = m_pcrvvCurves[iCurve]->getClosestControlPoint(ptMouseInCurveCoord, ptCtrlPt);
Point ptCtrlPtInWindowCoord = curveToWindow(iCurve, ptCtrlPt);
if (fabs(ptCtrlPtInWindowCoord.x - ptMouse.x) * 2 <= PICK_WINDOW_SIZE &&
fabs(ptCtrlPtInWindowCoord.y - ptMouse.y) * 2 <= PICK_WINDOW_SIZE) {
if (std::find(m_ivvCurrCtrlPts[iCurve].begin(),
m_ivvCurrCtrlPts[iCurve].end(),
iClosestCtrlPt) != m_ivvCurrCtrlPts[iCurve].end()) {
// the point is one of the currently selected points. do nothing
return;
}
}
}
// add a new control point to the current curve
m_pcrvvCurves[m_iCurrCurve]->addControlPoint(ptMouseInCurveCoord);
Point ptDummy;
deselectCtrlPts();
m_ivvCurrCtrlPts[m_iCurrCurve].push_back(
m_pcrvvCurves[m_iCurrCurve]->getClosestControlPoint(ptMouseInCurveCoord, ptDummy));
}
}
void GraphWidget::removeCtrlPt(const int iMouseX, const int iMouseY)
{
if (m_iCurrCurve >= 0) {
Point ptMouse(iMouseX, iMouseY);
Point ptCtrlPt;
Point ptMouseInCurveCoord = windowToCurve(m_iCurrCurve, ptMouse);
int iClosestCtrlPt = m_pcrvvCurves[m_iCurrCurve]->getClosestControlPoint(ptMouseInCurveCoord, ptCtrlPt);
Point ptCtrlPtInWindowCoord = curveToWindow(m_iCurrCurve, ptCtrlPt);
if (fabs(ptCtrlPtInWindowCoord.x - ptMouse.x) * 2 <= PICK_WINDOW_SIZE &&
fabs(ptCtrlPtInWindowCoord.y - ptMouse.y) * 2 <= PICK_WINDOW_SIZE) {
m_pcrvvCurves[m_iCurrCurve]->removeControlPoint(iClosestCtrlPt);
deselectCtrlPts();
}
}
}
void GraphWidget::dragCtrlPt(const int iMouseX, const int iMouseY)
{
if (m_ivActiveCurves.size() > 0) {
Point ptMouse(iMouseX, iMouseY);
ptMouse.x = max(0.0f, ptMouse.x);
ptMouse.x = min((float)(w() - 1), ptMouse.x);
ptMouse.y = max(0.0f, ptMouse.y);
ptMouse.y = min((float)(h() - 1), ptMouse.y);
for (int i = 0; i < m_ivActiveCurves.size(); ++i) {
int iCurve = m_ivActiveCurves[i];
Point ptMouseInCurveCoord = windowToCurve(iCurve, ptMouse);
Point ptDragStartInCurveCoord = windowToCurve(iCurve, m_ptDragStart);
Point ptOffset(ptMouseInCurveCoord.x - ptDragStartInCurveCoord.x,
ptMouseInCurveCoord.y - ptDragStartInCurveCoord.y);
m_pcrvvCurves[iCurve]->moveControlPoints(m_ivvCurrCtrlPts[iCurve], ptOffset,
m_cdvCurveDomains[iCurve].minimum(), m_cdvCurveDomains[iCurve].maximum());
}
m_ptDragStart = ptMouse;
}
}
void GraphWidget::deselectCtrlPts()
{
for (int i = 0; i < m_ivvCurrCtrlPts.size(); ++i)
m_ivvCurrCtrlPts[i].clear();
}
void GraphWidget::startSelection(const int iMouseX, const int iMouseY)
{
m_rectSelectionRect.bottomLeft(iMouseX, iMouseY);
m_rectSelectionRect.topRight(iMouseX, iMouseY);
}
void GraphWidget::doSelection(const int iMouseX, const int iMouseY)
{
m_rectSelectionRect.topRight(iMouseX, iMouseY);
}
void GraphWidget::endSelection(const int iMouseX, const int iMouseY)
{
m_rectSelectionRect.topRight(iMouseX, iMouseY);
m_rectSelectionRect.validate();
}
void GraphWidget::doZoom(const int iMouseDX, const int iMouseDY)
{
Point ptCenter((m_rectCurrViewport.left() + m_rectCurrViewport.right()) * 0.5f,
(m_rectCurrViewport.bottom() + m_rectCurrViewport.top()) * 0.5f);
float fXScaling = 1.0f + (float)-iMouseDX / (float)w();
float fYScaling = 1.0f + (float)iMouseDY / (float)h();
Rect rectNew = m_rectCurrViewport;
rectNew.left((rectNew.left() - ptCenter.x) * fXScaling + ptCenter.x);
rectNew.right((rectNew.right() - ptCenter.x) * fXScaling + ptCenter.x);
rectNew.top((rectNew.top() - ptCenter.y) * fYScaling + ptCenter.y);
rectNew.bottom((rectNew.bottom() - ptCenter.y) * fYScaling + ptCenter.y);
rectNew.validate();
if (rectNew.left() < 0.0f - ks_fViewportMargin)
rectNew.left(0.0f - ks_fViewportMargin);
if (rectNew.left() > 1.0f + ks_fViewportMargin)
rectNew.left(1.0f + ks_fViewportMargin);
if (rectNew.right() < 0.0f - ks_fViewportMargin)
rectNew.right(0.0f - ks_fViewportMargin);
if (rectNew.right() > 1.0f + ks_fViewportMargin)
rectNew.right(1.0f + ks_fViewportMargin);
if (rectNew.top() < 0.0f - ks_fViewportMargin)
rectNew.top(0.0f - ks_fViewportMargin);
if (rectNew.top() > 1.0f + ks_fViewportMargin)
rectNew.top(1.0f + ks_fViewportMargin);
if (rectNew.bottom() < 0.0f - ks_fViewportMargin)
rectNew.bottom(0.0f - ks_fViewportMargin);
if (rectNew.bottom() > 1.0f + ks_fViewportMargin)
rectNew.bottom(1.0f + ks_fViewportMargin);
if (rectNew.width() > 0.0f && rectNew.height() > 0.0f)
m_rectCurrViewport = rectNew;
}
void GraphWidget::startZoomSelection(const int iMouseX, const int iMouseY)
{
startSelection(iMouseX, iMouseY);
m_bHasZoomSelection = true;
}
void GraphWidget::doZoomSelection(const int iMouseX, const int iMouseY)
{
doSelection(iMouseX, iMouseY);
}
void GraphWidget::endZoomSelection(const int iMouseX, const int iMouseY)
{
endSelection(iMouseX, iMouseY);
m_bHasZoomSelection = false;
if (m_rectSelectionRect.width() > 0.0f && m_rectSelectionRect.height() > 0.0f) {
Rect rectOldViewport = m_rectCurrViewport;
m_rectCurrViewport.left(
rectOldViewport.width() * m_rectSelectionRect.left() / (float)w() + rectOldViewport.left());
m_rectCurrViewport.right(
rectOldViewport.width() * m_rectSelectionRect.right() / (float)w() + rectOldViewport.left());
m_rectCurrViewport.bottom(
rectOldViewport.height() * ((float)h() - m_rectSelectionRect.top()) / (float)h() + rectOldViewport.bottom());
m_rectCurrViewport.top(
rectOldViewport.height() * ((float)h() - m_rectSelectionRect.bottom()) / (float)h() + rectOldViewport.bottom());
}
}
void GraphWidget::startCtrlPtSelection(const int iMouseX, const int iMouseY)
{
startSelection(iMouseX, iMouseY);
m_bHasCtrlPtSelection = true;
}
void GraphWidget::doCtrlPtSelection(const int iMouseX, const int iMouseY)
{
doSelection(iMouseX, iMouseY);
}
void GraphWidget::endCtrlPtSelection(const int iMouseX, const int iMouseY)
{
endSelection(iMouseX, iMouseY);
m_bHasCtrlPtSelection = false;
deselectCtrlPts();
if (m_rectSelectionRect.width() > 0.0f && m_rectSelectionRect.height() > 0.0f) {
if (m_ivActiveCurves.size() > 0) {
for (int i = 0; i < m_ivActiveCurves.size(); ++i) {
int iCurve = m_ivActiveCurves[i];
for (int iCtrlPt = 0; iCtrlPt < m_pcrvvCurves[iCurve]->controlPointCount(); ++iCtrlPt) {
Point ptCtrlPtWndCoord, ptCtrlPt;
m_pcrvvCurves[iCurve]->getControlPoint(iCtrlPt, ptCtrlPt);
ptCtrlPtWndCoord = curveToWindow(iCurve, ptCtrlPt);
if (ptCtrlPtWndCoord.x >= m_rectSelectionRect.left() &&
ptCtrlPtWndCoord.x <= m_rectSelectionRect.right() &&
ptCtrlPtWndCoord.y <= m_rectSelectionRect.top() &&
ptCtrlPtWndCoord.y >= m_rectSelectionRect.bottom()) {
m_ivvCurrCtrlPts[iCurve].push_back(iCtrlPt);
}
}
}
}
}
}
void GraphWidget::doPan(const int iMouseDX, const int iMouseDY)
{
float fdx = (float)-iMouseDX * m_rectCurrViewport.width() / (float)w();
float fdy = (float)iMouseDY * m_rectCurrViewport.height() / (float)h();
fdx = max(-m_rectCurrViewport.left(), fdx);
fdx = min(1.0f - m_rectCurrViewport.right(), fdx);
fdy = max(-m_rectCurrViewport.bottom(), fdy);
fdy = min(1.0f - m_rectCurrViewport.top(), fdy);
m_rectCurrViewport.left(m_rectCurrViewport.left() + fdx);
m_rectCurrViewport.right(m_rectCurrViewport.right() + fdx);
m_rectCurrViewport.bottom(m_rectCurrViewport.bottom() + fdy);
m_rectCurrViewport.top(m_rectCurrViewport.top() + fdy);
}
void GraphWidget::zoomAll()
{
m_rectCurrViewport.bottomLeft(0.0f - ks_fViewportMargin, 0.0f - ks_fViewportMargin);
m_rectCurrViewport.topRight(1.0f + ks_fViewportMargin, 1.0f + ks_fViewportMargin);
}
void GraphWidget::activateCurve(int iCurve, bool bActive)
{
if (iCurve >= 0 && iCurve < m_pcrvvCurves.size()) {
if (!bActive) {
// deselect all control points because this
// curve is hidden
deselectCtrlPts();
if (iCurve == m_iCurrCurve)
m_iCurrCurve = -1;
}
if (bActive) {
std::vector<int>::iterator it = std::find(m_ivActiveCurves.begin(), m_ivActiveCurves.end(), iCurve);
if (it == m_ivActiveCurves.end()) {
m_ivActiveCurves.push_back(iCurve);
std::sort(m_ivActiveCurves.begin(), m_ivActiveCurves.end());
}
}
else { // !bActive
std::vector<int>::iterator it = std::find(m_ivActiveCurves.begin(), m_ivActiveCurves.end(), iCurve);
if (it != m_ivActiveCurves.end())
m_ivActiveCurves.erase(it);
}
if (m_ivActiveCurves.size() == 1) {
m_iCurrCurve = m_ivActiveCurves[0];
}
else
m_iCurrCurve = -1;
}
}
int GraphWidget::currCurveWrap() const
{
if (m_iCurrCurve >= 0) {
bool bWrap = m_pcrvvCurves[m_iCurrCurve]->wrap();
return bWrap ? 1 : 0;
}
return -1;
}
void GraphWidget::currCurveWrap(bool bWrap)
{
if (m_iCurrCurve >= 0) {
m_pcrvvCurves[m_iCurrCurve]->wrap(bWrap);
}
}
void GraphWidget::wrapCurve(int iCurve, bool bWrap)
{
m_pcrvvCurves[iCurve]->wrap(bWrap);
}
void GraphWidget::invalidateAllCurves()
{
for (int i = 0; i < m_pcrvvCurves.size(); ++i)
m_pcrvvCurves[i]->invalidate();
}
const Curve* GraphWidget::curve(int iCurve) const
{
return m_pcrvvCurves[iCurve];
}
void GraphWidget::drawActiveCurves() const
{
for (int i = m_ivActiveCurves.size() - 1; i >= 0; --i) {
int iColor = i % CURVE_COLOR_COUNT;
drawCurve(m_ivActiveCurves[i], iColor);
}
}
void GraphWidget::drawCurve(int iCurve, int iColor) const
{
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
gluOrtho2D(
m_fEndTime * m_rectCurrViewport.left(),
m_fEndTime * m_rectCurrViewport.right(),
m_rectCurrViewport.bottom() * m_cdvCurveDomains[iCurve].mag() + m_cdvCurveDomains[iCurve].minimum(),
m_rectCurrViewport.top() * m_cdvCurveDomains[iCurve].mag() + m_cdvCurveDomains[iCurve].minimum());
#ifdef _DEBUG
assert(iColor >= 0 && iColor < CURVE_COLOR_COUNT);
#endif _DEBUG
glColor3ub(byvvColors[iColor][0], byvvColors[iColor][1], byvvColors[iColor][2]);
// use a different line width and record the color for the current curve
if (iCurve == m_iCurrCurve) {
m_flcCurrCurve = flcvColors[iColor];
glLineWidth(3.0);
}
m_pcrvvCurves[iCurve]->drawEvaluatedCurveSegments();
if (iCurve == m_iCurrCurve)
glLineWidth(1.0);
m_pcrvvCurves[iCurve]->drawControlPoints();
glColor3f(1.0f, 1.0f, 1.0f); // white
for (int i = 0; i < m_ivvCurrCtrlPts[iCurve].size(); ++i) {
m_pcrvvCurves[iCurve]->drawControlPoint(m_ivvCurrCtrlPts[iCurve][i]);
}
glPopMatrix();
}
void GraphWidget::drawSelectionRect() const
{
if (m_bHasCtrlPtSelection || m_bHasZoomSelection) {
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
gluOrtho2D(0.0, w(), 0.0, h());
glColor3d(1.0, 0.0, 0.0);
glBegin(GL_LINE_LOOP);
glVertex2f(m_rectSelectionRect.left(), h() - m_rectSelectionRect.bottom());
glVertex2f(m_rectSelectionRect.left(), h() - m_rectSelectionRect.top());
glVertex2f(m_rectSelectionRect.right(), h() - m_rectSelectionRect.top());
glVertex2f(m_rectSelectionRect.right(), h() - m_rectSelectionRect.bottom());
glEnd();
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
}
}
void GraphWidget::drawZoomSelectionMap() const
{
if (m_bPanning) {
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
gluOrtho2D(-3.0, 1.1, -3.0, 1.1);
glColor3d(0.0, 1.0, 0.0);
glBegin(GL_LINE_LOOP);
glVertex2f(0.0f, 0.0f);
glVertex2f(1.0f, 0.0f);
glVertex2f(1.0f, 1.0f);
glVertex2f(0.0f, 1.0f);
glEnd();
glColor3d(1.0, 0.0, 0.0);
glBegin(GL_LINE_LOOP);
glVertex2f(m_rectCurrViewport.left(), m_rectCurrViewport.top());
glVertex2f(m_rectCurrViewport.right(), m_rectCurrViewport.top());
glVertex2f(m_rectCurrViewport.right(), m_rectCurrViewport.bottom());
glVertex2f(m_rectCurrViewport.left(), m_rectCurrViewport.bottom());
glEnd();
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
}
}
void GraphWidget::drawTimeBar() const
{
glColor3f(1.0, 0.0, 0.0);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
gluOrtho2D(m_rectCurrViewport.left(), m_rectCurrViewport.right(), 0.0, 1.0);
glLineWidth(2.0);
glBegin(GL_LINES);
glVertex2f(m_fCurrTime / m_fEndTime, 0.0);
glVertex2f(m_fCurrTime / m_fEndTime, 1.0);
glEnd();
glLineWidth(1.0);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
}
Point GraphWidget::curveToWindow(int iCurve, const Point& ptCurve) const
{
#ifdef _DEBUG
assert(iCurve >= 0 && iCurve < m_pcrvvCurves.size());
#endif // _DEBUG
Point ptWindow;
ptWindow.x = (ptCurve.x - m_rectCurrViewport.left() * m_fEndTime) /
(m_rectCurrViewport.width() * m_fEndTime) *
(float)w();
float fNormalizedCurveY = (ptCurve.y - m_cdvCurveDomains[iCurve].minimum()) /