本文整理汇总了C++中FloatArray::reserve方法的典型用法代码示例。如果您正苦于以下问题：C++ FloatArray::reserve方法的具体用法？C++ FloatArray::reserve怎么用？C++ FloatArray::reserve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FloatArray的用法示例。
在下文中一共展示了FloatArray::reserve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:
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
TEST(ArrayTest, ReserveAndAdd)
{
FloatArray a;
a.reserve(5);
a.add(1.0f);
a.add(3.3f);
a.add(5.5f);
ASSERT_EQ(3u, a.size());
ASSERT_TRUE(a.capacity() >= 5);
ASSERT_EQ(1.0f, a[0]);
ASSERT_EQ(3.3f, a[1]);
ASSERT_EQ(5.5f, a[2]);
// To test reuse of buffer
float* before = a.ptr();
a.reserve(3);
ASSERT_TRUE(a.capacity() >= 5);
float* after = a.ptr();
// Check that no realloc has been done
ASSERT_EQ(before, after);
ASSERT_TRUE(a.capacity() >= 5);
}示例2: DoAnim
void DoAnim()
{
static double time = 0.0; //Total time running.
static double artTime = 0.0; //Total time with the current art.
static DWORD lastTime = 0; //Time of last call.
const double elapsed = double(GetTickCount() - lastTime) / 1000.0;
if (lastTime)
{
lastTime = GetTickCount();
}
else
{
lastTime = GetTickCount();
return;
}
time += elapsed;
artTime += elapsed;
//If we need new art, get it.
static CKnot::AutoArt threads;
static Arrays arrays;
static FloatArray grid;
if (!threads.get() || artTime > ResetTime)
{
CKnot::StrokeList sl = CreateSquareStrokes();
sl = RemoveStrokes(sl);
threads = CKnot::CreateThread(sl);
artTime = 0.0;
grid.clear();
grid.reserve(sl.size() * 10);
for (CKnot::StrokeList::const_iterator it = sl.begin(); it != sl.end(); ++it)
{
grid.push_back(it->a.x);
grid.push_back(it->a.y);
grid.push_back(it->type == CKnot::Cross ? 1.0 : 0.0);
grid.push_back(it->type == CKnot::Glance ? 1.0 : 0.0);
grid.push_back(it->type == CKnot::Bounce ? 1.0 : 0.0);
grid.push_back(it->b.x);
grid.push_back(it->b.y);
grid.push_back(it->type == CKnot::Cross ? 1.0 : 0.0);
grid.push_back(it->type == CKnot::Glance ? 1.0 : 0.0);
grid.push_back(it->type == CKnot::Bounce ? 1.0 : 0.0);
}
for (size_t i = 0; i < arrays.size(); ++i)
delete arrays[i];
arrays.clear();
const size_t threadCount = threads->GetThreadCount();
for (size_t i = 0; i < threadCount; ++i)
{
const CKnot::Art::Thread* thread = threads->GetThread(i);
const CKnot::Art::Z* z = threads->GetZ(i);
const size_t segsPerKnot = 25;
const size_t kc = thread->GetKnotCount();
FloatArray* quads = new FloatArray;
arrays.push_back(quads);
const size_t target = kc * segsPerKnot;
const size_t memSize = 12 * (target + 1);
quads->reserve(memSize);
const float scr = double(rand()) / RAND_MAX / 2;
const float ecr = double(rand()) / RAND_MAX / 2 + .5;
const float scg = double(rand()) / RAND_MAX / 2;
const float ecg = double(rand()) / RAND_MAX / 2 + .5;
const float scb = double(rand()) / RAND_MAX / 2;
const float ecb = double(rand()) / RAND_MAX / 2 + .5;
for (size_t i = 0; i <= target; ++i)
{
const double s = double(i) / double(target);
const double t = s;
const CKnot::vec2 cur = thread->Y(t);
const CKnot::vec2 dcur = thread->Y(t + .00001);
const CKnot::vec2 diff = dcur - cur;
CKnot::vec2 normal(diff.y, -diff.x);
normal = normal * (1.0 / normal.GetLength());
normal = normal * .01;
const CKnot::vec2 flip(-normal.x, -normal.y);
const CKnot::vec2 start = cur + normal;
const CKnot::vec2 end = cur + flip;
const bool over = z->Y(t) > 0.0;
//.........这里部分代码省略.........