float CFont::AddStr(CStrAny &sStr, const CVector<2> &vPos, char chPrevious)
{
ASSERT(IsValid());
if (!sStr.Length())
return 0;
UINT uiVerts, uiInds, uiVertSize;
uiVerts = sStr.Length() * 4;
uiInds = sStr.Length() * 6;
CGeometry *pGeom = m_pTextModel->m_pGeometry;
uiVertSize = pGeom->m_pInputDesc->GetSize();
ASSERT(uiVertSize == sizeof(TPlainVertex));
if (pGeom->m_pVB->GetSize(0) < (pGeom->m_uiVertices + uiVerts) * uiVertSize)
return INVALID_LENGTH;
if (pGeom->m_pIB->GetSize(0) < (pGeom->m_uiIndices + uiInds) * sizeof(uint16_t))
return INVALID_LENGTH;
TPlainVertex *pVerts;
uint16_t *pInds;
pVerts = (TPlainVertex *) pGeom->m_pVB->Map(0, CResource::RMF_SYSTEM_ONLY, pGeom->m_uiVertices * uiVertSize, uiVerts * uiVertSize);
ASSERT(pVerts);
pInds = (uint16_t *) pGeom->m_pIB->Map(0, CResource::RMF_SYSTEM_ONLY, pGeom->m_uiIndices * sizeof(uint16_t), uiInds * sizeof(uint16_t));
ASSERT(pInds);
CVector<3> vCur = { vPos.x(), vPos.y() - m_iAscent, 0.5f }, vBoxSize = { 0, (float) m_iHeight, 0 };
int i, iChars = 0;
for (i = 0; i < sStr.Length(); i++) {
char ch = sStr[i];
if (!m_Chars[(uint8_t) ch].ch)
continue;
CRect<> rcInTex = GetCharRect(ch);
vBoxSize.x() = (float) m_Chars[(uint8_t) ch].iB;
vCur.x() += m_Chars[(uint8_t) ch].iA + GetKerning(chPrevious, ch);
pVerts[0].vPos.Set(vCur.x(), vCur.y() + vBoxSize.y(), vCur.z());
pVerts[0].vTex = rcInTex.m_vMin;
pVerts[1].vPos = vCur;
pVerts[1].vTex = rcInTex.GetPoint(0, 1);
pVerts[2].vPos = vCur + vBoxSize;
pVerts[2].vTex = rcInTex.GetPoint(1, 0);
pVerts[3].vPos.Set(vCur.x() + vBoxSize.x(), vCur.y(), vCur.z());
pVerts[3].vTex = rcInTex.m_vMax;
pInds[0] = pGeom->m_uiVertices + iChars * 4;
pInds[1] = pInds[0] + 1;
pInds[2] = pInds[0] + 2;
pInds[3] = pInds[0] + 2;
pInds[4] = pInds[0] + 1;
pInds[5] = pInds[0] + 3;
vCur.x() += m_Chars[(uint8_t) ch].iB + m_Chars[(uint8_t) ch].iC;
chPrevious = ch;
pVerts += 4;
pInds += 6;
iChars++;
}
pGeom->m_pIB->Unmap();
pGeom->m_pVB->Unmap();
pGeom->m_uiVertices += iChars * 4;
pGeom->m_uiIndices += iChars * 6;
return vCur.x() - vPos.x();
}
