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GLModelWidget.cpp
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GLModelWidget.cpp
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#include <QtGui>
#include <QtOpenGL>
#include <map>
#include <cmath>
#include <iostream>
#include <algorithm>
#include <ImathLine.h>
#include <ImathBoxAlgo.h>
#include "GLModelWidget.h"
#define DEBUG_ME (0)
Imath::Box3d fakeBounds(Imath::V3d(-50, -50, -50), Imath::V3d(50, 50, 50));
GLModelWidget::GLModelWidget(QWidget* parent, QSettings* appSettings, UndoManager *undoManager, VoxelGridGroupPtr sprite)
: QGLWidget(parent),
m_cam(),
m_cameraSnapStep(45.0),
m_cameraSnapDelta(m_cameraSnapStep/2.0, m_cameraSnapStep/2.0),
m_gvg(sprite),
m_previews(),
p_undoManager(undoManager),
m_activeVoxel(-1,-1,-1),
m_activeColor(1.0f, 1.0f, 1.0f, 1.0f),
m_lightColor(1.0f, 1.0f, 1.0f, 1.0f),
m_activeIndex(-1),
m_lastMouse(),
m_drawGrid(true),
m_drawVoxelGrid(true),
m_drawBoundingBox(false),
m_drawSpriteBounds(true),
m_shiftWrap(true),
m_currAxis(Y_AXIS),
m_activeTool(NULL),
p_appSettings(appSettings),
m_minBoundOffset(0),
m_maxBoundOffset(0)
{
m_drawGrid=p_appSettings->value("GLModelWidget/drawGrid", true).toBool();
m_drawVoxelGrid=p_appSettings->value("GLModelWidget/drawVoxelGrid", false).toBool();
m_drawBoundingBox=p_appSettings->value("GLModelWidget/drawBoundingBox", false).toBool();
m_drawSpriteBounds=p_appSettings->value("GLModelWidget/drawSpriteBounds", true).toBool();
// Default empty grid
centerGrid();
// Always shoot rays through the scene - even when a mouse button isn't pressed
setMouseTracking(true);
connect(p_undoManager, SIGNAL(spriteChanged(VoxelGridGroupPtr)),
this, SLOT(onSpriteChanged(VoxelGridGroupPtr)));
connect(p_undoManager, SIGNAL(paletteChanged(ColorPalettePtr)),
this, SLOT(onPaletteChanged(ColorPalettePtr)));
}
GLModelWidget::~GLModelWidget()
{
//makeCurrent();
//glDeleteLists(object, 1);
delete m_activeTool;
}
void GLModelWidget::saveSettings()
{
p_appSettings->setValue("GLModelWidget/drawGrid", m_drawGrid);
p_appSettings->setValue("GLModelWidget/drawVoxelGrid", m_drawVoxelGrid);
p_appSettings->setValue("GLModelWidget/drawBoundingBox", m_drawBoundingBox);
p_appSettings->setValue("GLModelWidget/drawSpriteBounds", m_drawSpriteBounds);
}
Imath::Box3i GLModelWidget::editBounds()
{
Imath::Box3i box=m_gvg->bounds();
switch (m_currAxis)
{
case X_AXIS:
box.min.x+=m_minBoundOffset.x;
box.max.x-=m_maxBoundOffset.x;
break;
case Y_AXIS:
box.min.y+=m_minBoundOffset.y;
box.max.y-=m_maxBoundOffset.y;
break;
case Z_AXIS:
box.min.z+=m_minBoundOffset.z;
box.max.z-=m_maxBoundOffset.z;
break;
default:
box.min+=m_minBoundOffset;
box.max-=m_maxBoundOffset;
}
return box;
}
void GLModelWidget::setSprite(VoxelGridGroupPtr sprite)
{
m_gvg=sprite;
//centerGrid();
updateGL();
}
void GLModelWidget::setCurrentAxis(const SproxelAxis val)
{
m_currAxis = val;
int mino, maxo, range;
switch (m_currAxis)
{
case X_AXIS: mino=m_minBoundOffset.x; maxo=m_maxBoundOffset.x; range=m_gvg->bounds().size().x; break;
case Y_AXIS: mino=m_minBoundOffset.y; maxo=m_maxBoundOffset.y; range=m_gvg->bounds().size().y; break;
case Z_AXIS: mino=m_minBoundOffset.z; maxo=m_maxBoundOffset.z; range=m_gvg->bounds().size().z; break;
default: mino=0; maxo=0; range=0;
}
emit sliceChanged(mino, maxo, range);
// TODO: Change tool as well.
updateGL();
}
void GLModelWidget::setMinSlice(int o)
{
switch (m_currAxis)
{
case X_AXIS: m_minBoundOffset.x=o; break;
case Y_AXIS: m_minBoundOffset.y=o; break;
case Z_AXIS: m_minBoundOffset.z=o; break;
}
updateGL();
}
void GLModelWidget::setMaxSlice(int o)
{
switch (m_currAxis)
{
case X_AXIS: m_maxBoundOffset.x=o; break;
case Y_AXIS: m_maxBoundOffset.y=o; break;
case Z_AXIS: m_maxBoundOffset.z=o; break;
}
updateGL();
}
void GLModelWidget::resizeAndClearVoxelGrid(const Imath::V3i& size)
{
VoxelGridLayerPtr layer(new VoxelGridLayer());
layer->resize(Imath::Box3i(Imath::V3i(0), size-Imath::V3i(1)));
layer->setName("main layer");
m_gvg->clear();
m_gvg->insertLayerAbove(0, layer);
centerGrid();
updateGL();
}
void GLModelWidget::resizeAndShiftVoxelGrid(const Imath::V3i& sizeInc,
const Imath::V3i& shift)
{
Imath::Box3i box=m_gvg->bounds();
Imath::V3i newSize = box.size() + Imath::V3i(1) + sizeInc;
//== FIXME: current implementation collapses all layers, should be per-layer operation
VoxelGridGroupPtr newGridPtr(new VoxelGridGroup(newSize, ColorPalettePtr()));
VoxelGridGroup &newGrid = *newGridPtr;
for (int x = box.min.x; x <= box.max.x; x++)
{
const int xDest = x + shift.x;
for (int y = box.min.y; y <= box.max.y; y++)
{
const int yDest = y + shift.y;
for (int z = box.min.z; z <= box.max.z; z++)
{
const int zDest = z + shift.z;
if ((xDest < 0 || xDest >= newSize.x) ||
(yDest < 0 || yDest >= newSize.y) ||
(zDest < 0 || zDest >= newSize.z))
continue;
newGrid.set(Imath::V3i(xDest, yDest, zDest),
m_gvg->get(Imath::V3i(x, y, z)));
}
}
}
p_undoManager->changeEntireVoxelGrid(m_gvg, newGridPtr);
centerGrid();
updateGL();
}
void GLModelWidget::reresVoxelGrid(const float scale)
{
//== FIXME: make it work with layers
Imath::V3i newDims;
const Imath::V3i oldDims = m_gvg->bounds().size()+Imath::V3i(1);
newDims.x = (int)((float)oldDims.x * scale);
newDims.y = (int)((float)oldDims.y * scale);
newDims.z = (int)((float)oldDims.z * scale);
if (newDims.x <= 0 && newDims.y <= 0 && newDims.z <= 0)
return;
VoxelGridGroupPtr newGridPtr(new VoxelGridGroup(newDims, ColorPalettePtr()));
VoxelGridGroup &newGrid = *newGridPtr;
newGrid.setTransform(m_gvg->transform());
Imath::M44d transform;
Imath::V3d oldTranslation = m_gvg->transform().translation();
transform[3][0] = oldTranslation.x * scale;
transform[3][1] = oldTranslation.y * scale;
transform[3][2] = oldTranslation.z * scale;
newGrid.setTransform(transform);
// TODO: Maybe scaling the world or the gvg would be fun
// Move the stuff over, "changing resolution"
// TODO: Make this less naieve. Right now, when down-res'ing, you get a filled
// voxel if there is *anything* in its up-res'ed version.
// Could also take neighbors into account (round corners) when up-res'ing, etc.
for (int x = 0; x < oldDims.x; x++)
{
for (int y = 0; y < oldDims.y; y++)
{
for (int z = 0; z < oldDims.z; z++)
{
const Imath::Color4f curCol = m_gvg->get(Imath::V3i(x,y,z));
if (curCol.a != 0.0f)
{
for (int xx = 0; xx < scale; xx++)
{
for (int yy = 0; yy < scale; yy++)
{
for (int zz = 0; zz < scale; zz++)
{
const Imath::V3i lowIndex((int)((float)x*scale)+xx,
(int)((float)y*scale)+yy,
(int)((float)z*scale)+zz);
newGrid.set(lowIndex, curCol);
}
}
}
}
}
}
}
p_undoManager->changeEntireVoxelGrid(m_gvg, newGridPtr);
updateGL();
}
QSize GLModelWidget::minimumSizeHint() const
{
return QSize(50, 50);
}
QSize GLModelWidget::sizeHint() const
{
return QSize(400, 400);
}
void GLModelWidget::setActiveTool(const SproxelTool tool)
{
delete m_activeTool;
switch (tool)
{
case TOOL_RAY: break; // TODO: Add icon and implement!
case TOOL_SPLAT: m_activeTool = new SplatToolState(p_undoManager); break;
case TOOL_FLOOD: m_activeTool = new FloodToolState(p_undoManager); break;
case TOOL_DROPPER: m_activeTool = new DropperToolState(p_undoManager); break;
case TOOL_ERASER: m_activeTool = new EraserToolState(p_undoManager); break;
case TOOL_REPLACE: m_activeTool = new ReplaceToolState(p_undoManager); break;
case TOOL_SLAB: m_activeTool = new SlabToolState(p_undoManager); break;
case TOOL_LINE: m_activeTool = new LineToolState(p_undoManager); break;
case TOOL_BOX: m_activeTool = new BoxToolState(p_undoManager); break;
case TOOL_EXTRUDE: m_activeTool = new ExtrudeToolState(p_undoManager); break;
}
}
void GLModelWidget::initializeGL()
{
QColor bg = p_appSettings->value("GLModelWidget/backgroundColor", QColor(161,161,161)).value<QColor>();
glClearColor(bg.redF(), bg.greenF(), bg.blueF(), 0.0);
glShadeModel(GL_SMOOTH);
glEnable(GL_DEPTH_TEST);
glEnable(GL_CULL_FACE); // Not sure if i should let these go or not.
m_cam.setSize(400, 400);
m_cam.lookAt(Imath::V3d(28, 21, 28), Imath::V3d(0.0, 0.0, 0.0));
m_cam.setFovy(37.849289);
}
void GLModelWidget::resizeGL(int width, int height)
{
m_cam.setSize(width, height);
m_cam.autoSetClippingPlanes(fakeBounds);
}
void GLModelWidget::glDrawBounds(const Imath::Box3i &bounds, QColor color)
{
if (bounds.isEmpty()) return;
Imath::Box3d box(bounds.min, bounds.max+Imath::V3i(1));
box=Imath::transform(box, m_gvg->transform());
const Imath::V3d &min=box.min;
const Imath::V3d &max=box.max;
glColor3f(color.redF(), color.greenF(), color.blueF());
glLineWidth(2);
glDisable(GL_DEPTH_TEST);
glBegin(GL_LINE_LOOP);
glVertex3f(min.x, min.y, min.z);
glVertex3f(max.x, min.y, min.z);
glVertex3f(max.x, min.y, max.z);
glVertex3f(min.x, min.y, max.z);
glEnd();
glBegin(GL_LINE_LOOP);
glVertex3f(min.x, max.y, min.z);
glVertex3f(max.x, max.y, min.z);
glVertex3f(max.x, max.y, max.z);
glVertex3f(min.x, max.y, max.z);
glEnd();
glBegin(GL_LINES);
glVertex3f(min.x, min.y, min.z);
glVertex3f(min.x, max.y, min.z);
glVertex3f(max.x, min.y, min.z);
glVertex3f(max.x, max.y, min.z);
glVertex3f(min.x, min.y, max.z);
glVertex3f(min.x, max.y, max.z);
glVertex3f(max.x, min.y, max.z);
glVertex3f(max.x, max.y, max.z);
glEnd();
glLineWidth(1);
glEnable(GL_DEPTH_TEST);
}
void GLModelWidget::paintGL()
{
QColor bg = p_appSettings->value("GLModelWidget/backgroundColor", QColor(161,161,161)).value<QColor>();
glClearColor(bg.redF(), bg.greenF(), bg.blueF(), 0.0);
m_cam.apply();
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
if (m_drawGrid)
{
// Shift the grid to the floor of the voxel grid
// TODO: Eventually stop moving this to the floor and just keep it at 0,0,0
Imath::Box3d worldBox = m_gvg->worldBounds();
glPushMatrix();
//glTranslatef(0, worldBox.min.y, 0);
glTranslatef(worldBox.min.x, worldBox.min.y, worldBox.min.z);
// Grid drawing with color conversion
QColor tempG = p_appSettings->value("GLModelWidget/gridColor", QColor(0,0,0)).value<QColor>();
QColor tempBG = p_appSettings->value("GLModelWidget/backgroundColor", QColor(161,161,161)).value<QColor>();
glDrawGrid(p_appSettings->value("GLModelWidget/gridSize", 16).toInt(),
p_appSettings->value("GLModelWidget/gridCellSize", 1).toInt(),
Imath::Color4f(tempG.redF(), tempG.greenF(), tempG.blueF(), 1.0f),
Imath::Color4f(tempBG.redF(), tempBG.greenF(), tempBG.blueF(), 1.0f));
glPopMatrix();
}
if (m_drawSpriteBounds)
{
Imath::Box3i bounds=m_gvg->bounds(), sliced=editBounds();
if (sliced!=bounds)
{
QColor tempS = p_appSettings->value("GLModelWidget/slicingColor", QColor(255,0,0)).value<QColor>();
glDrawBounds(sliced, tempS);
}
QColor tempG = p_appSettings->value("GLModelWidget/gridColor", QColor(0,0,0)).value<QColor>();
glDrawBounds(bounds, tempG);
}
glDrawAxes();
// Draw colored centers
//glEnable(GL_BLEND);
//glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_LIGHTING);
glEnable(GL_COLOR_MATERIAL);
glEnable(GL_LIGHT0);
GLfloat ambient[] = {0.0, 0.0, 0.0, 1.0};
glLightfv(GL_LIGHT0, GL_AMBIENT, ambient);
Imath::V3f camPos = m_cam.translation();
GLfloat lightDir[4];
lightDir[0] = camPos.x;
lightDir[1] = camPos.y;
lightDir[2] = camPos.z;
lightDir[3] = 0.0; // w=0.0 means directional
glLightfv(GL_LIGHT0, GL_POSITION, lightDir);
glLightfv(GL_LIGHT0, GL_DIFFUSE, m_lightColor.getValue());
bool drawOutlines=p_appSettings->value("GLModelWidget/drawVoxelOutlines", 0).toBool();
bool drawSmoothCubes=p_appSettings->value("GLModelWidget/drawSmoothVoxels", 0).toBool();
const Imath::Box3i dim = editBounds();
for (int x = dim.min.x; x <= dim.max.x; x++)
{
for (int y = dim.min.y; y <= dim.max.y; y++)
{
for (int z = dim.min.z; z <= dim.max.z; z++)
{
const Imath::V3i index = Imath::V3i(x,y,z);
Imath::Color4f cellColor = m_gvg->get(index);
const Imath::M44d mat = m_gvg->voxelTransform(index);
if (cellColor.a != 0.0)
{
glColor4f(cellColor.r, cellColor.g, cellColor.b, 0.2f);
glPushMatrix();
glMultMatrixd(glMatrix(mat));
CubeFaceMask mask = computeVoxelFaceMask(index, dim);
if (drawOutlines)
{
// TODO: Make line width a setting
// TODO: Learn how to fix these polygon offset values to work properly.
glEnable(GL_POLYGON_OFFSET_FILL);
glPolygonOffset(1.0, 1.0);
glDrawCubePoly(mask, drawSmoothCubes);
glDisable(GL_POLYGON_OFFSET_FILL);
//glLineWidth(1.5);
glDisable(GL_LIGHTING);
glEnable(GL_POLYGON_OFFSET_LINE);
glPolygonOffset(1.0, -5.0);
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
glColor3f(1.0f - cellColor.r,
1.0f - cellColor.g,
1.0f - cellColor.b);
glDrawCubePoly(mask, false);
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
glDisable(GL_POLYGON_OFFSET_LINE);
glEnable(GL_LIGHTING);
//glLineWidth(1.0);
}
else
{
glDrawCubePoly(mask, drawSmoothCubes);
}
glPopMatrix();
}
}
}
}
glDisable(GL_LIGHT0);
glDisable(GL_COLOR_MATERIAL);
glDisable(GL_LIGHTING);
//glDisable(GL_BLEND);
// DRAW UNPROJECTED LINE
if (DEBUG_ME)
{
const Imath::Line3d& lastRay = m_activeTool->ray();
glColor4f(1.0f, 1.0f, 0.0f, 1.0f);
glBegin(GL_LINES);
glVertex3d(lastRay.pos.x, lastRay.pos.y, lastRay.pos.z);
glVertex3f(lastRay.pos.x + lastRay.dir.x * 100.0,
lastRay.pos.y + lastRay.dir.y * 100.0,
lastRay.pos.z + lastRay.dir.z * 100.0);
glEnd();
}
// Grid stuff
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
if (m_drawVoxelGrid)
{
glColor4f(1.0f, 1.0f, 1.0f, 0.2f);
glDrawVoxelGrid();
}
if (p_appSettings->value("GLModelWidget/previewEnabled", 1).toBool())
{
glColor4f(1.0f, 0.0f, 0.0f, 0.2f);
glDrawPreviewVoxels();
}
if (m_activeVoxel != Imath::V3i(-1,-1,-1))
{
glColor4f(0.0f, 0.0f, 1.0f, 0.2f);
glDrawActiveVoxel();
}
glDisable(GL_BLEND);
// Draw text stuff
QFont font;
font.setPointSize(10);
glColor3f(1.0f, 1.0f, 1.0f);
const char *sliceName[3] = { "Axis X, Slice YZ",
"Axis Y, Slice XZ",
"Axis Z, Slice XY" };
renderText(10, 20, QString(sliceName[m_currAxis]), font);
//renderText(10, 32, QString("%1, %2, %3")
// .arg(m_activeVoxel.x)
// .arg(m_activeVoxel.y)
// .arg(m_activeVoxel.z));
// DRAW BOUNDING BOX
if (m_drawBoundingBox)
{
Imath::Box3d ext = dataBounds();
Imath::V3d& min = ext.min;
Imath::V3d& max = ext.max;
if (!ext.isEmpty())
{
glColor3f(1.0f, 0.0f, 0.0f);
glBegin(GL_LINE_LOOP);
glVertex3f(min.x, min.y, min.z);
glVertex3f(max.x, min.y, min.z);
glVertex3f(max.x, min.y, max.z);
glVertex3f(min.x, min.y, max.z);
glEnd();
glBegin(GL_LINE_LOOP);
glVertex3f(min.x, max.y, min.z);
glVertex3f(max.x, max.y, min.z);
glVertex3f(max.x, max.y, max.z);
glVertex3f(min.x, max.y, max.z);
glEnd();
glBegin(GL_LINES);
glVertex3f(min.x, min.y, min.z);
glVertex3f(min.x, max.y, min.z);
glVertex3f(max.x, min.y, min.z);
glVertex3f(max.x, max.y, min.z);
glVertex3f(min.x, min.y, max.z);
glVertex3f(min.x, max.y, max.z);
glVertex3f(max.x, min.y, max.z);
glVertex3f(max.x, max.y, max.z);
glEnd();
}
}
glLoadIdentity();
}
// Transform an Imath::M44d into a matrix usable by OpenGL.
double* GLModelWidget::glMatrix(const Imath::M44d& m)
{
return (double*)(&m);
}
void GLModelWidget::glDrawGrid(const int size,
const int gridCellSize,
const Imath::Color4f& gridColor,
const Imath::Color4f& bgColor)
{
// TODO: Query and restore depth test
glDisable(GL_DEPTH_TEST);
// Lighter grid lines
const Imath::Color4f lightColor = ((bgColor - gridColor) * 0.80f) + gridColor;
Imath::Box3i ext=m_gvg->bounds();
if (ext.isEmpty() || !m_drawSpriteBounds)
{
ext=Imath::Box3i(Imath::V3i(-size), Imath::V3i(size));
}
else
{
ext.min-=Imath::V3i(1);
ext.max+=Imath::V3i(2);
}
glBegin(GL_LINES);
glColor4f(lightColor.r, lightColor.g, lightColor.b, 1.0f);
for (int i = ext.min.x; i <= ext.max.x; i++)
{
if (i == 0) continue;
if (i % gridCellSize) continue;
glVertex3f(i, 0, ext.max.z);
glVertex3f(i, 0, ext.min.z);
}
for (int i = ext.min.z; i <= ext.max.z; i++)
{
if (i == 0) continue;
if (i % gridCellSize) continue;
glVertex3f(ext.max.x, 0, i);
glVertex3f(ext.min.x, 0, i);
}
glEnd();
// Darker main lines
// TODO: Query and restore line width
glLineWidth(2);
glBegin(GL_LINES);
glColor4f(gridColor.r, gridColor.g, gridColor.b, 1.0f);
glVertex3f(ext.min.x, 0, 0);
glVertex3f(ext.max.x, 0, 0);
glVertex3f(0, 0, ext.min.z);
glVertex3f(0, 0, ext.max.z);
glEnd();
glLineWidth(1);
glEnable(GL_DEPTH_TEST);
}
GLModelWidget::CubeFaceMask GLModelWidget::computeVoxelFaceMask(const Imath::V3i& index, const Imath::Box3i &bounds)
{
CubeFaceMask returnMask = FACE_NONE;
const Imath::Color4f& cellColor = m_gvg->get(index);
if (cellColor.a == 0.0f)
return returnMask;
Imath::V3i at;
// Positive
at=index; at.x++;
if (!bounds.intersects(at) || m_gvg->get(at).a == 0.0)
returnMask = (CubeFaceMask)(returnMask | FACE_POSX);
at=index; at.y++;
if (!bounds.intersects(at) || m_gvg->get(at).a == 0.0)
returnMask = (CubeFaceMask)(returnMask | FACE_POSY);
at=index; at.z++;
if (!bounds.intersects(at) || m_gvg->get(at).a == 0.0)
returnMask = (CubeFaceMask)(returnMask | FACE_POSZ);
// Negative
at=index; at.x--;
if (!bounds.intersects(at) || m_gvg->get(at).a == 0.0)
returnMask = (CubeFaceMask)(returnMask | FACE_NEGX);
at=index; at.y--;
if (!bounds.intersects(at) || m_gvg->get(at).a == 0.0)
returnMask = (CubeFaceMask)(returnMask | FACE_NEGY);
at=index; at.z--;
if (!bounds.intersects(at) || m_gvg->get(at).a == 0.0)
returnMask = (CubeFaceMask)(returnMask | FACE_NEGZ);
return returnMask;
}
void GLModelWidget::glDrawAxes()
{
// A little heavy-handed, but it gets the job done.
GLCamera localCam;
localCam.setSize(50, 50);
localCam.setFovy(15);
localCam.setRotation(m_cam.rotation());
const Imath::V3d distance = (m_cam.translation() - m_cam.pointOfInterest()).normalized();
localCam.setTranslation(distance*15.0);
localCam.setCenterOfInterest(m_cam.centerOfInterest());
// Set the new camera
glLoadIdentity();
localCam.apply();
// Draw the axes
glDisable(GL_DEPTH_TEST);
glBegin(GL_LINES);
glColor3f(1.0f, 0.0f, 0.0f);
glVertex3f(0.0f, 0.0f, 0.0f);
glVertex3f(1.0f, 0.0f, 0.0f);
glColor3f(0.0f, 1.0f, 0.0f);
glVertex3f(0.0f, 0.0f, 0.0f);
glVertex3f(0.0f, 1.0f, 0.0f);
glColor3f(0.0f, 0.0f, 1.0f);
glVertex3f(0.0f, 0.0f, 0.0f);
glVertex3f(0.0f, 0.0f, 1.0f);
glEnd();
glEnable(GL_DEPTH_TEST);
// Restore old camera
glLoadIdentity();
m_cam.apply();
}
void GLModelWidget::glDrawCubeWire()
{
glBegin(GL_LINE_LOOP);
glVertex3f(-0.5, -0.5, -0.5);
glVertex3f( 0.5, -0.5, -0.5);
glVertex3f( 0.5, -0.5, 0.5);
glVertex3f(-0.5, -0.5, 0.5);
glEnd();
glBegin(GL_LINE_LOOP);
glVertex3f(-0.5, 0.5, -0.5);
glVertex3f( 0.5, 0.5, -0.5);
glVertex3f( 0.5, 0.5, 0.5);
glVertex3f(-0.5, 0.5, 0.5);
glEnd();
glBegin(GL_LINES);
glVertex3f(-0.5, -0.5, -0.5);
glVertex3f(-0.5, 0.5, -0.5);
glVertex3f( 0.5, -0.5, -0.5);
glVertex3f( 0.5, 0.5, -0.5);
glVertex3f( 0.5, -0.5, 0.5);
glVertex3f( 0.5, 0.5, 0.5);
glVertex3f(-0.5, -0.5, 0.5);
glVertex3f(-0.5, 0.5, 0.5);
glEnd();
}
void GLModelWidget::glDrawCubePoly(const CubeFaceMask mask, bool smooth)
{
glBegin(GL_QUADS);
if (smooth)
{
float ns=0.07f, nf=sqrtf(1.0f-ns*ns*2);
if (mask & FACE_POSY)
{
glNormal3f( ns, nf,- ns);
glVertex3f( 0.5f, 0.5f,-0.5f);
glNormal3f(- ns, nf,- ns);
glVertex3f(-0.5f, 0.5f,-0.5f);
glNormal3f(- ns, nf, ns);
glVertex3f(-0.5f, 0.5f, 0.5f);
glNormal3f( ns, nf, ns);
glVertex3f( 0.5f, 0.5f, 0.5f);
}
if (mask & FACE_NEGY)
{
glNormal3f( ns,- nf, ns);
glVertex3f( 0.5f,-0.5f, 0.5f);
glNormal3f(- ns,- nf, ns);
glVertex3f(-0.5f,-0.5f, 0.5f);
glNormal3f(- ns,- nf,- ns);
glVertex3f(-0.5f,-0.5f,-0.5f);
glNormal3f( ns,- nf,- ns);
glVertex3f( 0.5f,-0.5f,-0.5f);
}
if (mask & FACE_POSZ)
{
glNormal3f( ns, ns, nf);
glVertex3f( 0.5f, 0.5f, 0.5f);
glNormal3f(- ns, ns, nf);
glVertex3f(-0.5f, 0.5f, 0.5f);
glNormal3f(- ns,- ns, nf);
glVertex3f(-0.5f,-0.5f, 0.5f);
glNormal3f( ns,- ns, nf);
glVertex3f( 0.5f,-0.5f, 0.5f);
}
if (mask & FACE_NEGZ)
{
glNormal3f( ns,- ns,- nf);
glVertex3f( 0.5f,-0.5f,-0.5f);
glNormal3f(- ns,- ns,- nf);
glVertex3f(-0.5f,-0.5f,-0.5f);
glNormal3f(- ns, ns,- nf);
glVertex3f(-0.5f, 0.5f,-0.5f);
glNormal3f( ns, ns,- nf);
glVertex3f( 0.5f, 0.5f,-0.5f);
}
if (mask & FACE_POSX)
{
glNormal3f( nf, ns,- ns);
glVertex3f( 0.5f, 0.5f,-0.5f);
glNormal3f( nf, ns, ns);
glVertex3f( 0.5f, 0.5f, 0.5f);
glNormal3f( nf,- ns, ns);
glVertex3f( 0.5f,-0.5f, 0.5f);
glNormal3f( nf,- ns,- ns);
glVertex3f( 0.5f,-0.5f,-0.5f);
}
if (mask & FACE_NEGX)
{
glNormal3f(- nf, ns, ns);
glVertex3f(-0.5f, 0.5f, 0.5f);
glNormal3f(- nf, ns,- ns);
glVertex3f(-0.5f, 0.5f,-0.5f);
glNormal3f(- nf,- ns,- ns);
glVertex3f(-0.5f,-0.5f,-0.5f);
glNormal3f(- nf,- ns, ns);
glVertex3f(-0.5f,-0.5f, 0.5f);
}
}
else
{
if (mask & FACE_POSY)
{
glNormal3f( 0.0f, 1.0f, 0.0f);
glVertex3f( 0.5f, 0.5f,-0.5f);
glVertex3f(-0.5f, 0.5f,-0.5f);
glVertex3f(-0.5f, 0.5f, 0.5f);
glVertex3f( 0.5f, 0.5f, 0.5f);
}
if (mask & FACE_NEGY)
{
glNormal3f( 0.0f,-1.0f, 0.0f);
glVertex3f( 0.5f,-0.5f, 0.5f);
glVertex3f(-0.5f,-0.5f, 0.5f);
glVertex3f(-0.5f,-0.5f,-0.5f);
glVertex3f( 0.5f,-0.5f,-0.5f);
}
if (mask & FACE_POSZ)
{
glNormal3f( 0.0f, 0.0f, 1.0f);
glVertex3f( 0.5f, 0.5f, 0.5f);
glVertex3f(-0.5f, 0.5f, 0.5f);
glVertex3f(-0.5f,-0.5f, 0.5f);
glVertex3f( 0.5f,-0.5f, 0.5f);
}
if (mask & FACE_NEGZ)
{
glNormal3f( 0.0f, 0.0f,-1.0f);
glVertex3f( 0.5f,-0.5f,-0.5f);
glVertex3f(-0.5f,-0.5f,-0.5f);
glVertex3f(-0.5f, 0.5f,-0.5f);
glVertex3f( 0.5f, 0.5f,-0.5f);
}
if (mask & FACE_POSX)
{
glNormal3f( 1.0f, 0.0f, 0.0f);
glVertex3f( 0.5f, 0.5f,-0.5f);
glVertex3f( 0.5f, 0.5f, 0.5f);
glVertex3f( 0.5f,-0.5f, 0.5f);
glVertex3f( 0.5f,-0.5f,-0.5f);
}
if (mask & FACE_NEGX)
{
glNormal3f(-1.0f, 0.0f, 0.0f);
glVertex3f(-0.5f, 0.5f, 0.5f);
glVertex3f(-0.5f, 0.5f,-0.5f);
glVertex3f(-0.5f,-0.5f,-0.5f);
glVertex3f(-0.5f,-0.5f, 0.5f);
}
}
glEnd();
}
#if 1
/* Much, much, MUCH quicker version of glDrawVoxelGrid / Emil
*/
void GLModelWidget::glDrawVoxelGrid()
{
const Imath::Box3i dim = m_gvg->bounds();
glPushMatrix();
auto mat = m_gvg->transform();
glMultMatrixd(glMatrix(mat));
int other[3][2] = {{1,2},{0,2},{1,2}};
glBegin(GL_LINES);
// for each axis...
for (int a0=0; a0<3; ++a0) {
int a1 = other[a0][0];
int a2 = other[a0][1];
for (int i1 = dim.min[a1]; i1 <= dim.max[a1]+1 ; ++i1) {
for (int i2 = dim.min[a2]; i2 <= dim.max[a2]+1 ; ++i2) {
Imath::V3i v_min;
v_min[a1] = i1;
v_min[a2] = i2;
Imath::V3i v_max = v_min;
v_min[a0] = dim.min[a0];
v_max[a0] = dim.max[a0]+1;
glVertex3f(v_min.x, v_min.y, v_min.z);
glVertex3f(v_max.x, v_max.y, v_max.z);
}
}
}
glEnd();
glPopMatrix();
}
#else
void GLModelWidget::glDrawVoxelGrid()
{
const Imath::Box3i dim = m_gvg->bounds();
// TODO: Optimize the intersects stuff (or just ignore it)
for (int x = dim.min.x; x <= dim.max.x; x++)
{
for (int y = dim.min.y; y <= dim.max.y+1; y++)
{
for (int z = dim.min.z; z <= dim.max.z+1; z++)
{
if (p_appSettings->value("GLModelWidget/previewEnabled", 1).toBool())
{
if (std::find(m_previews.begin(), m_previews.end(), Imath::V3i(x,y,z)) != m_previews.end())
continue;
if (std::find(m_previews.begin(), m_previews.end(), Imath::V3i(x,y-1,z)) != m_previews.end())
continue;
if (std::find(m_previews.begin(), m_previews.end(), Imath::V3i(x,y,z-1)) != m_previews.end())
continue;
if (std::find(m_previews.begin(), m_previews.end(), Imath::V3i(x,y-1,z-1)) != m_previews.end())
continue;
}
if (Imath::V3i(x,y,z) == m_activeVoxel || Imath::V3i(x,y-1,z) == m_activeVoxel ||
Imath::V3i(x,y,z-1) == m_activeVoxel || Imath::V3i(x,y-1,z-1) == m_activeVoxel)
{
continue;
}
const Imath::M44d mat = m_gvg->voxelTransform(Imath::V3i(x,y,z));
glPushMatrix();
glMultMatrixd(glMatrix(mat));
glBegin(GL_LINES);
glVertex3f(-0.5, -0.5, -0.5);
glVertex3f( 0.5, -0.5, -0.5);
glEnd();
glPopMatrix();
}
}
}
for (int x = dim.min.x; x <= dim.max.x+1; x++)
{
for (int y = dim.min.y; y <= dim.max.y; y++)
{
for (int z = dim.min.z; z <= dim.max.z+1; z++)
{
if (p_appSettings->value("GLModelWidget/previewEnabled", 1).toBool())
{
if (std::find(m_previews.begin(), m_previews.end(), Imath::V3i(x,y,z)) != m_previews.end())
continue;
if (std::find(m_previews.begin(), m_previews.end(), Imath::V3i(x-1,y,z)) != m_previews.end())
continue;
if (std::find(m_previews.begin(), m_previews.end(), Imath::V3i(x,y,z-1)) != m_previews.end())
continue;
if (std::find(m_previews.begin(), m_previews.end(), Imath::V3i(x-1,y,z-1)) != m_previews.end())
continue;