//-------------------------------------------------------------------------------//
void OverlayPanelElement::updateGeometryData()
{
/*
0-----2
| /|
| / |
|/ |
1-----3
*/
Renderer* renderer = Root::getSingleton().getActiveRenderer();
float offsetLeft = mLeft + renderer->getHorizontalTexelOffset() / OverlayMgr::getSingleton().getViewportWidth();
float offsetTop = mTop + renderer->getVerticalTexelOffset() / OverlayMgr::getSingleton().getViewportHeight();
float left, right, top, bottom;
left = offsetLeft * 2 - 1;
right = left + mWidth * 2;
top = -((offsetTop * 2) - 1);
bottom = top - mHeight * 2;
VertexBufferPtr vbuf = mRenderData.vertexData->vertexBufferBinding->getBuffer(0);
float* pPos = static_cast<float*>(vbuf->lock(HardwareBuffer::HBL_DISCARD));
float zValue = Root::getSingleton().getActiveRenderer()->getMaxDepthValue();
*pPos++ = left;
*pPos++ = top;
*pPos++ = zValue;
*pPos++ = left;
*pPos++ = bottom;
*pPos++ = zValue;
*pPos++ = right;
*pPos++ = top;
*pPos++ = zValue;
*pPos++ = right;
*pPos++ = bottom;
*pPos++ = zValue;
vbuf->unlock();
}
//-------------------------------------------------------------------------------//
void OverlayPanelElement::updateTexData()
{
if(!mTexture.isNull() &&mIsInitialised)
{
VertexDeclaration* decl = mRenderData.vertexData->vertexDecl;
if(mTexCoordNum == 0)
{
decl->addElement(1, 0,VET_FLOAT2, VES_TEXTURE_COORDINATES, 0);
VertexBufferPtr vbuf = HardwareBufferMgr::getSingletonPtr()->createVertexBuffer(decl->getVertexSize(1), mRenderData.vertexData->vertexCount,
HardwareBuffer::HBU_STATIC_WRITE_ONLY, false);
mRenderData.vertexData->vertexBufferBinding->setBinding(1,vbuf);
mTexCoordNum = 1;
}
if(mTexCoordNum)
{
VertexBufferPtr buf = mRenderData.vertexData->vertexBufferBinding->getBuffer(1);
float* pVBStart = static_cast<float*>(buf->lock(HardwareBuffer::HBL_DISCARD));
size_t uvSize = VertexElement::getTypeSize(VET_FLOAT2) / sizeof(float);
size_t vertexSize = decl->getVertexSize(1) / sizeof(float);
float* pTex = pVBStart;
pTex[0] = mU1; pTex[1] = mV1;
pTex += vertexSize;
pTex[0] = mU1; pTex[1] = mV2;
pTex += vertexSize;
pTex[0] = mU2; pTex[1] = mV1;
pTex += vertexSize;
pTex[0] = mU2; pTex[1] = mV2;
buf->unlock();
}
}
}