void VertexData::appendVertexData(const VertexDataPtr& pVertexes)
{
int oldNumVerts = m_NumVerts;
int oldNumIndexes = m_NumIndexes;
m_NumVerts += pVertexes->getNumVerts();
m_NumIndexes += pVertexes->getNumIndexes();
if (m_NumVerts > m_ReserveVerts || m_NumIndexes > m_ReserveIndexes) {
grow();
}
memcpy(&(m_pVertexData[oldNumVerts]), pVertexes->m_pVertexData,
pVertexes->getNumVerts()*sizeof(Vertex));
int numIndexes = pVertexes->getNumIndexes();
for (int i=0; i<numIndexes; ++i) {
m_pIndexData[oldNumIndexes+i] = pVertexes->m_pIndexData[i] + oldNumVerts;
}
m_bDataChanged = true;
}
void VectorNode::calcPolyLine(const vector<glm::vec2>& origPts,
const vector<float>& origTexCoords, bool bIsClosed, LineJoin lineJoin,
const VertexDataPtr& pVertexData, Pixel32 color)
{
vector<glm::vec2> pts;
pts.reserve(origPts.size());
vector<float> texCoords;
texCoords.reserve(origPts.size());
pts.push_back(origPts[0]);
texCoords.push_back(origTexCoords[0]);
for (unsigned i = 1; i < origPts.size(); ++i) {
if (glm::distance2(origPts[i], origPts[i-1]) > 0.1) {
pts.push_back(origPts[i]);
texCoords.push_back(origTexCoords[i]);
}
}
if (bIsClosed) {
texCoords.push_back(origTexCoords[origTexCoords.size()-1]);
}
int numPts = pts.size();
// Create array of wide lines.
vector<WideLine> lines;
lines.reserve(numPts-1);
for (int i = 0; i < numPts-1; ++i) {
lines.push_back(WideLine(pts[i], pts[i+1], m_StrokeWidth));
}
if (bIsClosed) {
lines.push_back(WideLine(pts[numPts-1], pts[0], m_StrokeWidth));
}
// First points
if (bIsClosed) {
WideLine lastLine = lines[lines.size()-1];
glm::vec2 pli = getLineLineIntersection(lastLine.pl0, lastLine.dir,
lines[0].pl0, lines[0].dir);
glm::vec2 pri = getLineLineIntersection(lastLine.pr0, lastLine.dir,
lines[0].pr0, lines[0].dir);
Triangle tri(lastLine.pl1, lines[0].pl0, pri);
if (tri.isClockwise()) {
if (!LineSegment(lastLine.pr0, lastLine.pr1).isPointOver(pri) &&
!LineSegment(lines[0].pr0, lines[0].pr1).isPointOver(pri))
{
pri = lines[0].pr1;
}
} else {
if (!LineSegment(lastLine.pl0, lastLine.pl1).isPointOver(pli) &&
!LineSegment(lines[0].pl0, lines[0].pl1).isPointOver(pli))
{
pli = lines[0].pl1;
}
}
float curTC = texCoords[0];
switch (lineJoin) {
case LJ_MITER:
pVertexData->appendPos(pli, glm::vec2(curTC,1), color);
pVertexData->appendPos(pri, glm::vec2(curTC,0), color);
break;
case LJ_BEVEL: {
if (tri.isClockwise()) {
pVertexData->appendPos(lines[0].pl0, glm::vec2(curTC,1), color);
pVertexData->appendPos(pri, glm::vec2(curTC,0), color);
} else {
pVertexData->appendPos(pli, glm::vec2(curTC,1), color);
pVertexData->appendPos(lines[0].pr0, glm::vec2(curTC,0), color);
}
}
break;
default:
AVG_ASSERT(false);
break;
}
} else {
pVertexData->appendPos(lines[0].pl0, glm::vec2(texCoords[0],1), color);
pVertexData->appendPos(lines[0].pr0, glm::vec2(texCoords[0],0), color);
}
// All complete line segments
unsigned numNormalSegments;
if (bIsClosed) {
numNormalSegments = pts.size();
} else {
numNormalSegments = pts.size()-2;
}
for (unsigned i = 0; i < numNormalSegments; ++i) {
const WideLine* pLine1 = &(lines[i]);
const WideLine* pLine2;
if (i == pts.size()-1) {
pLine2 = &(lines[0]);
} else {
pLine2 = &(lines[i+1]);
}
glm::vec2 pli = getLineLineIntersection(pLine1->pl0, pLine1->dir, pLine2->pl0,
pLine2->dir);
glm::vec2 pri = getLineLineIntersection(pLine1->pr0, pLine1->dir, pLine2->pr0,
pLine2->dir);
Triangle tri(pLine1->pl1, pLine2->pl0, pri);
if (tri.isClockwise()) {
if (!LineSegment(pLine1->pr0, pLine1->pr1).isPointOver(pri) &&
!LineSegment(pLine2->pr0, pLine2->pr1).isPointOver(pri))
{
pri = pLine2->pr1;
}
} else {
if (!LineSegment(pLine1->pl0, pLine1->pl1).isPointOver(pli) &&
!LineSegment(pLine2->pl0, pLine2->pl1).isPointOver(pli))
{
pli = pLine2->pl1;
}
}
int curVertex = pVertexData->getNumVerts();
float curTC = texCoords[i+1];
switch (lineJoin) {
case LJ_MITER:
pVertexData->appendPos(pli, glm::vec2(curTC,1), color);
pVertexData->appendPos(pri, glm::vec2(curTC,0), color);
pVertexData->appendQuadIndexes(
curVertex-1, curVertex-2, curVertex+1, curVertex);
break;
case LJ_BEVEL:
{
float TC0;
float TC1;
if (tri.isClockwise()) {
calcBevelTC(*pLine1, *pLine2, true, texCoords, i+1, TC0, TC1);
pVertexData->appendPos(pLine1->pl1, glm::vec2(TC0,1), color);
pVertexData->appendPos(pLine2->pl0, glm::vec2(TC1,1), color);
pVertexData->appendPos(pri, glm::vec2(curTC,0), color);
pVertexData->appendQuadIndexes(
curVertex-1, curVertex-2, curVertex+2, curVertex);
pVertexData->appendTriIndexes(
curVertex, curVertex+1, curVertex+2);
} else {
calcBevelTC(*pLine1, *pLine2, false, texCoords, i+1, TC0, TC1);
pVertexData->appendPos(pLine1->pr1, glm::vec2(TC0,0), color);
pVertexData->appendPos(pli, glm::vec2(curTC,1), color);
pVertexData->appendPos(pLine2->pr0, glm::vec2(TC1,0), color);
pVertexData->appendQuadIndexes(
curVertex-2, curVertex-1, curVertex+1, curVertex);
pVertexData->appendTriIndexes(
curVertex, curVertex+1, curVertex+2);
}
}
break;
default:
AVG_ASSERT(false);
}
}
// Last segment (PolyLine only)
if (!bIsClosed) {
int curVertex = pVertexData->getNumVerts();
float curTC = texCoords[numPts-1];
pVertexData->appendPos(lines[numPts-2].pl1, glm::vec2(curTC,1), color);
pVertexData->appendPos(lines[numPts-2].pr1, glm::vec2(curTC,0), color);
pVertexData->appendQuadIndexes(curVertex-1, curVertex-2, curVertex+1, curVertex);
}
}