void TileLayerComponentManager::_fillBuffer(VertexBuffer& buffer, const TileMapSP tileMap, unsigned layer,
float tileWidth, float tileHeight, const Matrix4& wt) const {
buffer.clear();
unsigned width = tileMap->width (layer);
unsigned height = tileMap->height(layer);
Vector2i nTiles(tileMap->tileSetHTiles(), tileMap->tileSetVTiles());
for(unsigned y = 0; y < height; ++y) {
for(unsigned x = 0; x < width; ++x) {
TileMap::TileIndex tile = tileMap->tile(x, y, layer);
if(tile == 0)
continue;
unsigned index = buffer.vertexCount();
Box2 tc = boxView(tileBox(nTiles, tile - 1),
Box2(Vector2(0.001, 0.001), Vector2(0.999, 0.999)));
for(unsigned vi = 0; vi < 4; ++vi) {
unsigned x2 = (vi & 0x01)? 1: 0;
unsigned y2 = (vi & 0x02)? 1: 0;
Vector4 pos = wt * Vector4(( x + x2) * tileWidth,
(height - y - y2) * tileHeight, 0, 1);
buffer.addVertex(SpriteVertex{ pos, Vector4::Constant(1),
tc.corner(Box2::CornerType(x2 + y2*2)) });
}
buffer.addIndex(index + 0);
buffer.addIndex(index + 1);
buffer.addIndex(index + 2);
buffer.addIndex(index + 2);
buffer.addIndex(index + 1);
buffer.addIndex(index + 3);
}
}
}
void Game::initBlocks()
{
Box2 paddedBounds = bounds_;
paddedBounds.pad(2.0f);
for (int i = 0; i < voronoiDiagram_.getPolygonCount(); ++i) {
Polygon2 polygon = voronoiDiagram_.getPolygon(i);
if (contains(paddedBounds, polygon)) {
addActor(actorFactory_->createBlock(polygon));
}
}
}
bool CollisionComponentManager::hitTest(std::deque<EntityRef>& hits, const Box2& box, unsigned hitMask) {
bool found = false;
for(int ci = 0; ci < int(nComponents()); ++ci) {
CollisionComponent& c = _components[ci];
if(!c.entity().isEnabledRec() || !c.isEnabled()
|| !c.shape() || c.shape()->type() != SHAPE_ALIGNED_BOX
|| (hitMask & c.hitMask()) == 0
|| (hitMask & c.ignoreMask()) != 0)
continue;
Box2 cbox = c.worldAlignedBox();
if(!cbox.intersection(box).isEmpty()) {
hits.push_back(c.entity());
found = true;
}
}
return found;
}
bool Box2::Intersects(const Box2 & box) const
{
Math::Vertices2 verticesA;
Math::Vertices2 verticesB;
GetVertices(verticesA);
box.GetVertices(verticesB);
return Math::Collide(verticesA,verticesB);
}
/** Locks the specified region on the surface, returning a lockinfo
structure containing data required to access the surface.
@param eLockMode Lock access mode
@param Region Region to lock
@return A structure contaning data about the locked region
@todo Does the region have to be of type long ?
*/
const Surface::LockInfo &DefaultImage::lock(LockMode eLockMode, const Box2<long> &Region) {
if(m_LockInfo.pMemory)
throw FailedException("Nuclex::Video::DefaultImage::lock()",
"Tried to lock image multiple times");
Box2<long> ClippedRegion;
if(!Region)
ClippedRegion.BR = m_Size;
else if((Region.TL.X < 0) || (Region.TL.Y < 0) ||
(Region.BR.X > static_cast<long>(m_Size.X)) || (Region.BR.Y > static_cast<long>(m_Size.Y)))
throw InvalidArgumentException("Nuclex::Video::DefaultImage::lock()",
"The locking region must not leave the image area");
m_LockInfo.Size = ClippedRegion.getSize();
m_LockInfo.nPitch = m_Size.X * Surface::bppFromFormat(m_eFormat);
m_LockInfo.eFormat = m_eFormat;
m_LockInfo.eMode = LM_READWRITE;
m_LockInfo.pMemory = &m_Memory[0] + (ClippedRegion.TL.Y * m_LockInfo.nPitch +
ClippedRegion.TL.X * Surface::bppFromFormat(m_eFormat));
return m_LockInfo;
}
/******************************************************************************
* Determines the range of the construction grid to display.
******************************************************************************/
std::tuple<FloatType, Box2I> ViewportSceneRenderer::determineGridRange(Viewport* vp)
{
// Determine the area of the construction grid that is visible in the viewport.
static const Point2 testPoints[] = {
{-1,-1}, {1,-1}, {1, 1}, {-1, 1}, {0,1}, {0,-1}, {1,0}, {-1,0},
{0,1}, {0,-1}, {1,0}, {-1,0}, {-1, 0.5}, {-1,-0.5}, {1,-0.5}, {1,0.5}, {0,0}
};
// Compute intersection points of test rays with grid plane.
Box2 visibleGridRect;
size_t numberOfIntersections = 0;
for(size_t i = 0; i < sizeof(testPoints)/sizeof(testPoints[0]); i++) {
Point3 p;
if(vp->computeConstructionPlaneIntersection(testPoints[i], p, 0.1f)) {
numberOfIntersections++;
visibleGridRect.addPoint(p.x(), p.y());
}
}
if(numberOfIntersections < 2) {
// Cannot determine visible parts of the grid.
return std::tuple<FloatType, Box2I>(0.0f, Box2I());
}
// Determine grid spacing adaptively.
Point3 gridCenter(visibleGridRect.center().x(), visibleGridRect.center().y(), 0);
FloatType gridSpacing = vp->nonScalingSize(vp->gridMatrix() * gridCenter) * 2.0f;
// Round to nearest power of 10.
gridSpacing = pow((FloatType)10, floor(log10(gridSpacing)));
// Determine how many grid lines need to be rendered.
int xstart = (int)floor(visibleGridRect.minc.x() / (gridSpacing * 10)) * 10;
int xend = (int)ceil(visibleGridRect.maxc.x() / (gridSpacing * 10)) * 10;
int ystart = (int)floor(visibleGridRect.minc.y() / (gridSpacing * 10)) * 10;
int yend = (int)ceil(visibleGridRect.maxc.y() / (gridSpacing * 10)) * 10;
return std::tuple<FloatType, Box2I>(gridSpacing, Box2I(Point2I(xstart, ystart), Point2I(xend, yend)));
}
void Game::removeBlocks(Box2 const &box)
{
for (ActorIterator i = actors_.begin(); i != actors_.end(); ++i) {
Actor *actor = &*i;
if (isBlock(actor)) {
BlockPhysicsComponent *physicsComponent = convert(actor->getPhysicsComponent());
b2Vec2 position = physicsComponent->getBody()->GetPosition();
if (box.containsPoint(Vector2(position.x, position.y))) {
int j = i - actors_.begin();
removeActor(actor);
i = actors_.begin() + j - 1;
}
}
}
}
bool Wml::TestIntersection (const Box2<Real>& rkBox0,
const Box2<Real>& rkBox1)
{
// convenience variables
const Vector2<Real>* akA = rkBox0.Axes();
const Vector2<Real>* akB = rkBox1.Axes();
const Real* afEA = rkBox0.Extents();
const Real* afEB = rkBox1.Extents();
// compute difference of box centers, D = C1-C0
Vector2<Real> kD = rkBox1.Center() - rkBox0.Center();
Real aafAbsAdB[2][2], fAbsAdD, fRSum;
// axis C0+t*A0
aafAbsAdB[0][0] = Math<Real>::FAbs(akA[0].Dot(akB[0]));
aafAbsAdB[0][1] = Math<Real>::FAbs(akA[0].Dot(akB[1]));
fAbsAdD = Math<Real>::FAbs(akA[0].Dot(kD));
fRSum = afEA[0] + afEB[0]*aafAbsAdB[0][0] + afEB[1]*aafAbsAdB[0][1];
if ( fAbsAdD > fRSum )
return false;
// axis C0+t*A1
aafAbsAdB[1][0] = Math<Real>::FAbs(akA[1].Dot(akB[0]));
aafAbsAdB[1][1] = Math<Real>::FAbs(akA[1].Dot(akB[1]));
fAbsAdD = Math<Real>::FAbs(akA[1].Dot(kD));
fRSum = afEA[1] + afEB[0]*aafAbsAdB[1][0] + afEB[1]*aafAbsAdB[1][1];
if ( fAbsAdD > fRSum )
return false;
// axis C0+t*B0
fAbsAdD = Math<Real>::FAbs(akB[0].Dot(kD));
fRSum = afEB[0] + afEA[0]*aafAbsAdB[0][0] + afEA[1]*aafAbsAdB[1][0];
if ( fAbsAdD > fRSum )
return false;
// axis C0+t*B1
fAbsAdD = Math<Real>::FAbs(akB[1].Dot(kD));
fRSum = afEB[1] + afEA[0]*aafAbsAdB[0][1] + afEA[1]*aafAbsAdB[1][1];
if ( fAbsAdD > fRSum )
return false;
return true;
}
void Game::initVoronoiDiagram()
{
Box2 vertexBounds = bounds_;
vertexBounds.pad(5.0f);
Box2 triangulationBounds = vertexBounds;
triangulationBounds.pad(5.0f);
delauneyTriangulation_ = DelauneyTriangulation(triangulationBounds);
int subdivCount = 30;
float subdivWidth = float(vertexBounds.getWidth()) / float(subdivCount);
float subdivHeight = float(vertexBounds.getHeight()) / float(subdivCount);
for (int i = 0; i < subdivCount; ++i) {
for (int j = 0; j < subdivCount; ++j) {
float x = vertexBounds.p1.x + (float(i) + getRandomFloat()) * subdivWidth;
float y = vertexBounds.p1.y + (float(j) + getRandomFloat()) * subdivHeight;
delauneyTriangulation_.addVertex(Vector2(x, y));
}
}
voronoiDiagram_.generate(delauneyTriangulation_);
}
//----------------------------------------------------------------------------
bool Mgc::ContOrientedBox (int iQuantity, const Vector2* akPoint,
const bool* abValid, Box2& rkBox)
{
if ( !GaussPointsFit(iQuantity,akPoint,abValid,rkBox.Center(),
rkBox.Axes(),rkBox.Extents()) )
{
return false;
}
// Let C be the box center and let U0 and U1 be the box axes. Each input
// point is of the form X = C + y0*U0 + y1*U1. The following code
// computes min(y0), max(y0), min(y1), and max(y1). The box center is
// then adjusted to be
// C' = C + 0.5*(min(y0)+max(y0))*U0 + 0.5*(min(y1)+max(y1))*U1
// get first valid vertex
Vector2 kDiff;
Real fY0Min, fY0Max, fY1Min, fY1Max;
int i;
for (i = 0; i < iQuantity; i++)
{
if ( abValid[i] )
{
kDiff = akPoint[i] - rkBox.Center();
fY0Min = kDiff.Dot(rkBox.Axis(0));
fY0Max = fY0Min;
fY1Min = kDiff.Dot(rkBox.Axis(1));
fY1Max = fY1Min;
break;
}
}
for (i++; i < iQuantity; i++)
{
if ( abValid[i] )
{
kDiff = akPoint[i] - rkBox.Center();
Real fY0 = kDiff.Dot(rkBox.Axis(0));
if ( fY0 < fY0Min )
fY0Min = fY0;
else if ( fY0 > fY0Max )
fY0Max = fY0;
Real fY1 = kDiff.Dot(rkBox.Axis(1));
if ( fY1 < fY1Min )
fY1Min = fY1;
else if ( fY1 > fY1Max )
fY1Max = fY1;
}
}
rkBox.Center() += (0.5f*(fY0Min+fY0Max))*rkBox.Axis(0)
+ (0.5f*(fY1Min+fY1Max))*rkBox.Axis(1);
rkBox.Extent(0) = 0.5f*(fY0Max - fY0Min);
rkBox.Extent(1) = 0.5f*(fY1Max - fY1Min);
return true;
}
//----------------------------------------------------------------------------
Box2 Mgc::ContOrientedBox (int iQuantity, const Vector2* akPoint)
{
Box2 kBox;
GaussPointsFit(iQuantity,akPoint,kBox.Center(),kBox.Axes(),
kBox.Extents());
// Let C be the box center and let U0 and U1 be the box axes. Each input
// point is of the form X = C + y0*U0 + y1*U1. The following code
// computes min(y0), max(y0), min(y1), and max(y1). The box center is
// then adjusted to be
// C' = C + 0.5*(min(y0)+max(y0))*U0 + 0.5*(min(y1)+max(y1))*U1
Vector2 kDiff = akPoint[0] - kBox.Center();
Real fY0Min = kDiff.Dot(kBox.Axis(0)), fY0Max = fY0Min;
Real fY1Min = kDiff.Dot(kBox.Axis(1)), fY1Max = fY1Min;
for (int i = 1; i < iQuantity; i++)
{
kDiff = akPoint[i] - kBox.Center();
Real fY0 = kDiff.Dot(kBox.Axis(0));
if ( fY0 < fY0Min )
fY0Min = fY0;
else if ( fY0 > fY0Max )
fY0Max = fY0;
Real fY1 = kDiff.Dot(kBox.Axis(1));
if ( fY1 < fY1Min )
fY1Min = fY1;
else if ( fY1 > fY1Max )
fY1Max = fY1;
}
kBox.Center() += (0.5f*(fY0Min+fY0Max))*kBox.Axis(0) +
(0.5f*(fY1Min+fY1Max))*kBox.Axis(1);
kBox.Extent(0) = 0.5f*(fY0Max - fY0Min);
kBox.Extent(1) = 0.5f*(fY1Max - fY1Min);
return kBox;
}
ShapeSP Shape::newAlignedBox(const Box2& box) {
ShapeSP shape = std::make_shared<Shape>(SHAPE_ALIGNED_BOX);
shape->_points.push_back(box.min());
shape->_points.push_back(box.max());
return shape;
}
