本文整理汇总了C++中PCPlane::redefine方法的典型用法代码示例。如果您正苦于以下问题：C++ PCPlane::redefine方法的具体用法？C++ PCPlane::redefine怎么用？C++ PCPlane::redefine使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类PCPlane的用法示例。
在下文中一共展示了PCPlane::redefine方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: addPortalCullingPlanes
// calculate culling planes from portal and frustum
// origin and add to list of culling planes
// NOTE: returns 0 if portal was completely culled by existing planes
// returns > 0 if culling planes are added (# is planes added)
int PCZFrustum::addPortalCullingPlanes(PortalBase* portal)
{
int addedcullingplanes = 0;
// If portal is of type aabb or sphere, add a plane which is same as frustum
// origin plane (ie. redundant). We do this because we need the plane as a flag
// to prevent infinite recursion
if (portal->getType() == PortalBase::PORTAL_TYPE_AABB ||
portal->getType() == PortalBase::PORTAL_TYPE_SPHERE)
{
PCPlane * newPlane = getUnusedCullingPlane();
newPlane->setFromOgrePlane(mOriginPlane);
newPlane->setPortal(portal);
mActiveCullingPlanes.push_front(newPlane);
addedcullingplanes++;
return addedcullingplanes;
}
// only do this check if it's an anti portal since it's double facing.
bool flipPlane = false;
if (portal->getTypeFlags() == AntiPortalFactory::FACTORY_TYPE_FLAG)
{
// check if the portal norm is facing the frustum
Vector3 frustumToPortal = portal->getDerivedCP() - mOrigin;
Vector3 portalDirection = portal->getDerivedDirection();
Real dotProduct = frustumToPortal.dotProduct(portalDirection);
// it's facing away from the frustum. Flip the planes.
if (dotProduct > 0) flipPlane = true;
}
// For portal Quads: Up to 4 planes can be added by the sides of a portal quad.
// Each plane is created from 2 corners (world space) of the portal and the
// frustum origin (world space).
int i,j;
Plane::Side pt0_side, pt1_side;
bool visible;
PCPlaneList::iterator pit;
for (i=0;i<4;i++)
{
// first check if both corners are outside of one of the existing planes
j = i+1;
if (j > 3)
{
j = 0;
}
visible = true;
pit = mActiveCullingPlanes.begin();
while ( pit != mActiveCullingPlanes.end() )
{
PCPlane * plane = *pit;
pt0_side = plane->getSide(portal->getDerivedCorner(i));
pt1_side = plane->getSide(portal->getDerivedCorner(j));
if (pt0_side == Plane::NEGATIVE_SIDE &&
pt1_side == Plane::NEGATIVE_SIDE)
{
// the portal edge was actually completely culled by one of culling planes
visible = false;
break;
}
pit++;
}
if (visible)
{
// add the plane created from the two portal corner points and the frustum location
// to the culling plane
PCPlane * newPlane = getUnusedCullingPlane();
if (mProjType == PT_ORTHOGRAPHIC) // use camera direction if projection is orthographic.
{
if (flipPlane)
{
newPlane->redefine(portal->getDerivedCorner(j) + mOriginPlane.normal,
portal->getDerivedCorner(i), portal->getDerivedCorner(j));
}
else
{
newPlane->redefine(portal->getDerivedCorner(j) + mOriginPlane.normal,
portal->getDerivedCorner(j), portal->getDerivedCorner(i));
}
}
else
{
if (flipPlane)
{
newPlane->redefine(mOrigin,
portal->getDerivedCorner(i),
portal->getDerivedCorner(j));
}
else
{
newPlane->redefine(mOrigin,
portal->getDerivedCorner(j),
portal->getDerivedCorner(i));
}
}
newPlane->setPortal(portal);
//.........这里部分代码省略.........