//----------------------------------------------------------------------------
Bool RenderText::Append(const Char* pText, Float x, Float y)
{
if (!pText)
{
return true;
}
VertexBuffer* pVertexBuffer = GetMesh()->GetVertexBuffer();
WIRE_ASSERT(pVertexBuffer && pVertexBuffer->GetAttributes().HasTCoord());
const UInt offset = GetMesh()->GetIndexCount()/6;
const UInt maxLength = pVertexBuffer->GetQuantity() / 4;
UInt indexCount = 0;
BoundingVolume* pModelBound = GetMesh()->GetModelBound();
WIRE_ASSERT(pModelBound);
Vector2F min(System::MAX_FLOAT, System::MAX_FLOAT);
Vector2F max(System::MIN_FLOAT, System::MIN_FLOAT);
Float radius = pModelBound->GetRadius();
Vector3F center3 = pModelBound->GetCenter();
if (radius != 0)
{
min = Vector2F(center3.X() - radius, center3.Y() - radius);
max = Vector2F(center3.X() + radius, center3.Y() + radius);
}
for (UInt j = 0; pText[j]; j++)
{
if ((offset+indexCount) >= maxLength)
{
break;
}
UInt c = static_cast<UInt>(pText[j]);
if (c == ' ')
{
x+= mWhitespaceWidth;
continue;
}
if (c >= mCharSizes.GetQuantity())
{
return false;
}
UInt i = (indexCount + offset) * 4;
Float cWidth = mCharSizes[c].X();
Float cHeight = mCharSizes[c].Y();
Float cStride = mCharSizes[c].Z();
if ((x+cStride) >= mLineWidth || c == '\n')
{
x = 0.0F;
y -= mFontHeight;
if (c == '\n')
{
continue;
}
}
Float cy = y - mCharSizes[c].W();
const Float x1 = x + cWidth;
const Float cy1 = cy + cHeight;
min.X() = min.X() > x ? x : min.X();
max.X() = max.X() < x1 ? x1 : max.X();
min.Y() = min.Y() > cy1 ? cy : min.Y();
max.Y() = max.Y() < cy1 ? cy1 : max.Y();
pVertexBuffer->Position3(i) = Vector3F(x, cy1, 0);
pVertexBuffer->Color4(i) = mColor;
pVertexBuffer->Position3(i+1) = Vector3F(x1, cy1, 0);
pVertexBuffer->Color4(i+1) = mColor;
pVertexBuffer->Position3(i+2) = Vector3F(x1, cy, 0);
pVertexBuffer->Color4(i+2) = mColor;
pVertexBuffer->Position3(i+3) = Vector3F(x, cy, 0);
pVertexBuffer->Color4(i+3) = mColor;
UInt c4 = c*4;
pVertexBuffer->TCoord2(i) = mUvs[c4];
pVertexBuffer->TCoord2(i+1) = mUvs[c4+1];
pVertexBuffer->TCoord2(i+2) = mUvs[c4+2];
pVertexBuffer->TCoord2(i+3) = mUvs[c4+3];
x+= cStride;
indexCount++;
}
GetMesh()->SetIndexCount(GetMesh()->GetIndexCount() + indexCount*6);
mIsPdrBufferOutOfDate = true;
Vector2F center((max.X()+min.X()) * 0.5F, (max.Y()+min.Y()) * 0.5F);
pModelBound->SetCenter(Vector3F(center.X(), center.Y(), 0));
pModelBound->SetRadius((center - min).Length());
mPenX = x;
mPenY = y;
return true;
}
