本文整理汇总了C++中WindowProjection::IsValid方法的典型用法代码示例。如果您正苦于以下问题：C++ WindowProjection::IsValid方法的具体用法？C++ WindowProjection::IsValid怎么用？C++ WindowProjection::IsValid使用的例子？那么恭喜您, 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WindowProjection的用法示例。
在下文中一共展示了WindowProjection::IsValid方法的2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: protect
void
TopographyThread::Trigger(const WindowProjection &_projection)
{
assert(_projection.IsValid());
const GeoBounds new_bounds = _projection.GetScreenBounds();
if (last_bounds.IsValid() && last_bounds.IsInside(new_bounds)) {
/* still inside cache bounds - now check if we crossed a scale
threshold for at least one file, which would mean we have to
update a file which was not updated for the current cache
bounds */
if (scale_threshold < 0 ||
_projection.GetMapScale() >= scale_threshold)
/* the cache is still fresh */
return;
}
last_bounds = new_bounds.Scale(1.1);
scale_threshold = store.GetNextScaleThreshold(_projection.GetMapScale());
{
const ScopeLock protect(mutex);
next_projection = _projection;
StandbyThread::Trigger();
}
}示例2: assert
void
TransparentRendererCache::AlphaBlendTo(Canvas &canvas,
const WindowProjection &projection,
uint8_t alpha) const
{
assert(canvas.IsDefined());
assert(buffer.IsDefined());
assert(projection.IsValid());
assert(compare_projection.IsDefined());
assert(Check(projection));
if (empty)
return;
const unsigned width = projection.GetScreenWidth(),
height = projection.GetScreenHeight();
#ifdef USE_MEMORY_CANVAS
canvas.AlphaBlendNotWhite(0, 0, width, height,
buffer, 0, 0, width, height,
alpha);
#else
canvas.AlphaBlend(0, 0, width, height,
buffer, 0, 0, width, height,
alpha);
#endif
}