GridPos Grid::positionOfPiece(Piece* piece) const {
auto it = _piecePositions.find(piece);
if (it != _piecePositions.end()) {
return (*it).second;
}
return GridPos(0,0);
}
void DataGridContentProvider::NotifySelectCell(vint row, vint column)
{
currentCell=GridPos(row, column);
dataGrid->NotifySelectedCellChanged();
if(listViewItemStyleProvider)
{
GuiListControl::IItemStyleController* selectedStyleController=0;
GuiListControl::IItemArranger* arranger=dataGrid->GetArranger();
if(arranger)
{
selectedStyleController=arranger->GetVisibleStyle(row);
}
vint count=listViewItemStyleProvider->GetCreatedItemStyles().Count();
for(vint i=0;i<count;i++)
{
GuiListControl::IItemStyleController* itemStyleController=listViewItemStyleProvider->GetCreatedItemStyles().Get(i);
ItemContent* itemContent=listViewItemStyleProvider->GetItemContent<ItemContent>(itemStyleController);
if(itemContent)
{
if(itemStyleController==selectedStyleController)
{
itemContent->NotifySelectCell(column);
}
else
{
itemContent->NotifySelectCell(-1);
}
}
}
}
}
bool DataGridContentProvider::SetSelectedCell(const GridPos& value, bool openEditor)
{
if(currentCell!=value)
{
if(value==GridPos(-1, -1))
{
CloseEditor(false);
return true;
}
else if(0<=value.row && value.row<dataProvider->GetRowCount() && 0<=value.column && value.column<dataProvider->GetColumnCount())
{
IDataEditorFactory* editorFactory=openEditor?dataProvider->GetCellDataEditorFactory(value.row, value.column):0;
OpenEditor(value.row, value.column, editorFactory);
return true;
}
return false;
}
return true;
}
void DataGridContentProvider::CloseEditor(bool forOpenNewEditor)
{
if(currentEditorRequestingSaveData)
{
NotifyCloseEditor();
}
else
{
if(currentCell!=GridPos(-1, -1))
{
if(currentEditor)
{
NotifyCloseEditor();
currentEditor=0;
}
if(!forOpenNewEditor)
{
NotifySelectCell(-1, -1);
}
}
}
}
GridPos GridPos::operator+(const GridPos& p) const {
return GridPos(q + p.q, r + p.r);
}
GridPos GridPos::operator-(const GridPos& p) const {
return GridPos(q - p.q, r - p.r);
}
/* Core code contributed by Kevin Behilo, 2/20/04.
*
* Possible TODO: add code to soften and blend shadow edges
* (see aliasing comments in source).
*
* Definite TODO: the whole thing can be sped up by precalculating the
* surface normals once. In fact that should be placed in a separate Shading
* Context, so that it could be re-used for quickly re-shading multiple times.
*/
void vtHeightFieldGrid3d::ShadowCastDib(vtBitmapBase *pBM, const FPoint3 &light_dir,
float fLightFactor, float fAmbient, bool progress_callback(int)) const
{
const IPoint2 bitmap_size = pBM->GetSize();
// Compute area that we will sample for shading, bounded by the texel
// centers, which are 1/2 texel in from the grid extents.
const DPoint2 texel_size(m_EarthExtents.Width() / bitmap_size.x,
m_EarthExtents.Height() / bitmap_size.y);
DRECT texel_area = m_EarthExtents;
texel_area.Grow(-texel_size.x/2, -texel_size.y/2);
const DPoint2 texel_base(texel_area.left, texel_area.bottom);
const bool b8bit = (pBM->GetDepth() == 8);
// These values are hardcoded here but could be exposed in the GUI
const float sun = 0.7f;
// If we have light that's pointing UP, rather than down at the terrain,
// then it's only going to take a really long time to produce a
// completely dark terrain. We can catch this case up front.
if (light_dir.y > 0)
{
for (int i = 0; i < bitmap_size.x; i++)
{
for (int j = 0; j < bitmap_size.y; j++)
{
if (b8bit)
pBM->ScalePixel8(i, j, fAmbient);
else
pBM->ScalePixel24(i, j, fAmbient);
}
}
return;
}
// Create array to hold flags
LightMap lightmap(bitmap_size.x, bitmap_size.y);
// This factor is used when applying shading to non-shadowed areas to
// try and keep the "contrast" down to a min. (still get "patches" of
// dark/light spots though).
// It is initialized to 1.0, because in case there are no shadows at all
// (such as at noon) we still need a reasonable value.
float darkest_shadow = 1.0;
// For the vector used to cast shadows, we need it in grid coordinates,
// which are (Column,Row) where Row is north. But the direction passed
// in uses OpenGL coordinates where Z is south. So flip Z.
FPoint3 grid_light_dir = light_dir;
grid_light_dir.z = -grid_light_dir.z;
// Scale the light vector such that the X or Z component (whichever is
// larger) is 1. This is will serve as our direction vector in grid
// coordinates, when drawing a line across the grid to cast the shadow.
//
// Code adapted from aaron_torpy:
// http://www.geocities.com/aaron_torpy/algorithms.htm
//
float f, HScale;
if ( fabs(grid_light_dir.x) > fabs(grid_light_dir.z) )
{
HScale = m_fStep.x;
f = fabs(light_dir.x);
}
else
{
HScale = m_fStep.y;
f = fabs(light_dir.z);
}
grid_light_dir /= f;
int i_init, i_final, i_incr;
int j_init, j_final, j_incr;
if (grid_light_dir.x > 0)
{
i_init=0;
i_final=bitmap_size.x;
i_incr=1;
}
else
{
i_init=bitmap_size.x-1;
i_final=-1;
i_incr=-1;
}
if (grid_light_dir.z > 0)
{
j_init=0;
j_final=bitmap_size.y;
j_incr=1;
}
else
{
j_init=bitmap_size.y-1;
j_final=-1;
j_incr=-1;
}
// First pass: find each point that it is in shadow.
DPoint2 pos;
float shadowheight, elevation;
FPoint3 normal;
FPoint3 p3;
int x, z;
float shade;
for (int j = j_init; j != j_final; j += j_incr)
{
if (progress_callback != NULL && (j%20) == 0)
progress_callback(abs(j-j_init) * 100 / bitmap_size.y);
for (int i = i_init; i != i_final; i += i_incr)
{
pos = GridPos(texel_base, texel_size, i, j);
FindAltitudeOnEarth(pos, shadowheight, true);
if (shadowheight == INVALID_ELEVATION)
{
// set a flag so we won't visit this one again
lightmap.Set(i, j, 1);
continue;
}
bool Under_Out = false;
for (int k = 1; Under_Out == false; k++)
{
x = (int) (i + grid_light_dir.x*k + 0.5f);
z = (int) (j + grid_light_dir.z*k + 0.5f);
shadowheight += grid_light_dir.y * HScale;
if ((x<0) || (x>bitmap_size.x-1) || (z<0) || (z>bitmap_size.y-1))
{
Under_Out = true; // Out of the grid
break;
}
pos = GridPos(texel_base, texel_size, x, z);
FindAltitudeOnEarth(pos, elevation, true);
// skip holes in the grid
if (elevation == INVALID_ELEVATION)
continue;
if (elevation > shadowheight)
{
if (k>1)
Under_Out = true; // Under the terrain
break;
}
// Combine color and shading.
// Only do shadow if we have not shaded this i,j before.
if (lightmap.Get(x,z) < 1)
{
// 3D elevation query to get slope
m_LocalCS.EarthToLocal(pos, p3.x, p3.z);
FindAltitudeAtPoint(p3, p3.y, true, 0, &normal);
//*****************************************
// Here the Sun(r, g, b) = 0 because we are in the shade
// therefore I(r, g, b) = Amb(r, g, b) * (0.5*N[z] + 0.5)
// shade = sun*normal.Dot(-light_direction) + fAmbient * (0.5f*normal.y + 0.5f);
shade = fAmbient * (0.5f*normal.y + 0.5f);
//*****************************************
//*****************************************
if (darkest_shadow > shade)
darkest_shadow = shade;
// Rather than doing the shading at this point we may want to
// simply save the value into the LightMap array. Then apply
// some anti-aliasing or edge softening algorithm to the LightMap.
// Once that's done, apply the whole LightMap to the DIB.
if (b8bit)
pBM->ScalePixel8(x, bitmap_size.y-1-z, shade);
else
pBM->ScalePixel24(x, bitmap_size.y-1-z, shade);
// set a flag to show that this texel has been shaded.
// (or set to value of the shading - see comment above)
lightmap.Set(x, z, lightmap.Get(x, z)+1);
}
}
} //for i
} //for j
// For dot-product lighting, we use the normal 3D vector, only inverted
// so that we can compare it to the upward-pointing ground normals.
const FPoint3 inv_light_dir = -light_dir;
// Second pass. Now we are going to loop through the LightMap and apply
// the full lighting formula to each texel that has not been shaded yet.
for (int j = 0; j < bitmap_size.y; j++)
{
if (progress_callback != NULL && (j%20) == 0)
progress_callback(j * 100 / bitmap_size.y);
for (int i = 0; i < bitmap_size.x; i++)
{
if (lightmap.Get(i, j) > 0)
continue;
pos = GridPos(texel_base, texel_size, i, j);
// 2D elevation query to check for holes in the grid
FindAltitudeOnEarth(pos, elevation, true);
if (elevation == INVALID_ELEVATION)
continue;
// 3D elevation query to get slope
m_LocalCS.EarthToLocal(pos, p3.x, p3.z);
FindAltitudeAtPoint(p3, p3.y, true, 0, &normal);
//*****************************************
//*****************************************
//shade formula based on:
//http://www.geocities.com/aaron_torpy/algorithms.htm#calc_intensity
// The Amb value was arbitrarily chosen
// Need to experiment more to determine the best value
// Perhaps calculating Sun(r, g, b) and Amb(r, g, b) for a
// given time of day (e.g. warmer colors close to sunset)
// or give control to user since textures will differ
// I(r, g, b) = Sun(r, g, b) * scalarprod(N, v) + Amb(r, g, b) * (0.5*N[z] + 0.5)
shade = sun * normal.Dot(inv_light_dir);
// It's a reasonable assuption that an angle of 45 degrees is
// sufficient to fully illuminate the ground.
shade /= .7071f;
// Now add ambient component
shade += fAmbient * (0.5f*normal.y + 0.5f);
// Maybe clipping values can be exposed to the user as well.
// Clip - don't shade down below lowest ambient level
if (shade < darkest_shadow)
shade = darkest_shadow;
else if (shade > 1.2f)
shade = 1.2f;
// Push the value of 'shade' toward 1.0 by the fLightFactor factor.
// This means that fLightFactor=0 means no lighting, 1 means full lighting.
float diff = 1 - shade;
diff = diff * (1 - fLightFactor);
shade += diff;
// Rather than doing the shading at this point we may want to
// simply save the value into the LightMap array. Then apply
// some anti-aliasing or edge softening algorithm to the LightMap.
// Once that's done, apply the whole LightMap to the DIB.
// LightMap[I][J]= shade; // set to value of the shading - see comment above)
if (b8bit)
pBM->ScalePixel8(i, bitmap_size.y-1-j, shade);
else
pBM->ScalePixel24(i, bitmap_size.y-1-j, shade);
}
}
// Possible TODO: Apply edge softening algorithm (?)
}
/*!
* @return the position below this position
*
* \sa left(), right(), up()
*/
inline GridPos down()
{
return GridPos(row()+1, column());
}
/*!
* @return the position above this position
*
* \sa left(), right(), down()
*/
inline GridPos up()
{
return GridPos(row()-1, column());
}
/*!
* @return the position to the right of this position
*
* \sa left(), up(), down()
*/
inline GridPos right()
{
return GridPos(row(), column()+1);
}
/*!
* @return the position to the left of this position
*
* \sa right(), up(), down()
*/
inline GridPos left()
{
return GridPos(row(), column()-1);
}