本文整理汇总了C++中Terrain::_getHeight方法的典型用法代码示例。如果您正苦于以下问题：C++ Terrain::_getHeight方法的具体用法？C++ Terrain::_getHeight怎么用？C++ Terrain::_getHeight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Terrain的用法示例。
在下文中一共展示了Terrain::_getHeight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: _UpdateGeometry
void xEditTerrainHeight::_UpdateGeometry()
{
Terrain * terrain = Environment::Instance()->GetTerrain();
if (!terrain)
return ;
int op = xApp::Instance()->GetOperator();
Vec3 center = mBrush.position;
float size = mBrush.size;
float density = mBrush.density;
// calculate brush box
float sx = center.x - size * 0.5f;
float sz = center.z + size * 0.5f;
float ex = center.x + size * 0.5f;
float ez = center.z - size * 0.5f;
const Terrain::Config & config = terrain->GetConfig();
int xVertexCount = config.xVertexCount - 1;
int zVertexCount = config.zVertexCount - 1;
int isx = (int)Math::Ceil(sx / config.xSize * xVertexCount);
int iex = (int)(ex / config.xSize * xVertexCount);
int isz = (int)Math::Ceil((1 - sz / config.zSize) * zVertexCount);
int iez = (int)((1 - ez / config.zSize) * zVertexCount);
isx = Math::Maximum(0, isx);
isz = Math::Maximum(0, isz);
iex = Math::Maximum(0, iex);
iez = Math::Maximum(0, iez);
isx = Math::Minimum(isx, xVertexCount);
isz = Math::Minimum(isz, zVertexCount);
iex = Math::Minimum(iex, xVertexCount);
iez = Math::Minimum(iez, zVertexCount);
int index = 0;
Rect rc = { isx, isz, iex, iez };
float * heights = terrain->LockHeight(rc);
int w = mBrush.image->GetWidth() - 1;
int h = mBrush.image->GetHeight() - 1;
for (int j = isz; j <= iez; ++j)
{
for (int i = isx; i <= iex; ++i)
{
float x = float(i) / xVertexCount * config.xSize;
float z = (1 - float(j) / zVertexCount) * config.zSize;
if (x < 0 || x > config.xSize ||
z < 0 || z > config.zSize)
continue ;
float u = (x - sx) / (ex - sx);
float v = (z - sz) / (ez - sz);
u = Math::Maximum(u, 0.0f);
v = Math::Maximum(v, 0.0f);
u = Math::Minimum(u, 1.0f);
v = Math::Minimum(v, 1.0f);
int iu = int(u * w);
int iv = int(v * h);
int iu1 = iu + 1;
int iv1 = iv + 1;
iu1 = Math::Minimum(iu1, w);
iv1 = Math::Minimum(iv1, h);
float du = u * w - iu;
float dv = v * h - iv;
Color4 c0 = mBrush.image->GetColor(iu, iv);
Color4 c1 = mBrush.image->GetColor(iu1, iv);
Color4 c2 = mBrush.image->GetColor(iu, iv1);
Color4 c3 = mBrush.image->GetColor(iu1, iv1);
Color4 cx0 = c0 + (c1 - c0) * du;
Color4 cx1 = c2 + (c3 - c2) * du;
Color4 cy = cx0 + (cx1 - cx0) * dv;
float d = cy.r * density;
if (mOp == eUp)
heights[index++] += d;
else if (mOp == eDown)
heights[index++] -= d;
else if (mOp == eSmooth)
{
float ha = terrain->_getHeight(i - 1, j + 0);
float hb = terrain->_getHeight(i + 0, j - 1);
float hc = terrain->_getHeight(i + 1, j + 0);
float hd = terrain->_getHeight(i + 0, j + 1);
float hm = heights[index];
float hAvg = (hm + ha + hb + hc + hd) / 5;
//.........这里部分代码省略.........