bool StGLFontEntry::renderGlyph(StGLContext& theCtx,
const bool theToDrawUndef,
const stUtf32_t theUChar,
const stUtf32_t theUCharNext,
StGLTile& theGlyph,
StGLVec2& thePen) {
std::map<stUtf32_t, size_t>::const_iterator aTileIter = myGlyphMap->find(theUChar);
size_t aTileId;
if(aTileIter != myGlyphMap->end()) {
aTileId = aTileIter->second;
} else if(renderGlyph(theCtx, theUChar, false)) {
aTileId = myLastTileId;
(*myGlyphMap)[theUChar] = aTileId;
} else if(!theToDrawUndef) {
return false;
} else {
aTileIter = myGlyphMap->find(0);
if(aTileIter != myGlyphMap->end()) {
aTileId = aTileIter->second;
} else if(renderGlyph(theCtx, theUChar, true)) {
aTileId = myLastTileId;
(*myGlyphMap)[theUChar] = aTileId;
} else {
thePen.x() += myFont->getAdvanceX(theUChar, theUCharNext);
return false;
}
}
const StGLTile& aTile = myTiles[aTileId];
StGLRect aRect(thePen.y() + aTile.px.top(), thePen.y() + aTile.px.bottom(),
thePen.x() + aTile.px.left(), thePen.x() + aTile.px.right());
theGlyph.px = aRect;
theGlyph.uv = aTile.uv;
theGlyph.texture = aTile.texture;
thePen.x() += myFont->getAdvanceX(theUChar, theUCharNext);
return true;
}
void StGLImageProgram::setTextureSizePx(StGLContext& theCtx,
const StGLVec2& theVec2) {
theCtx.core20fwd->glUniform2fv(uniTexSizePxLoc, 1, theVec2);
theCtx.core20fwd->glUniform2f(uniTexelSizePxLoc, 1.0f / theVec2.x(), 1.0f / theVec2.y());
}
void StGeometryTest::resizeGrid(const StRectI_t& winRectPx) {
StGLContext& aCtx = getContext();
// grid
size_t linesCountV = 16 + 1;
size_t cellSizePx = 10;
size_t linesCountH = 16 + 1;
if(winRectPx.width() > winRectPx.height()) {
cellSizePx = winRectPx.width() / (linesCountV - 1);
linesCountH = (winRectPx.height() / cellSizePx) + 1;
} else {
cellSizePx = winRectPx.height() / (linesCountH - 1);
linesCountV = (winRectPx.width() / cellSizePx) + 1;
}
myCellSize.x() = 2.0f * GLfloat(cellSizePx) / GLfloat(winRectPx.width());
myCellSize.y() = 2.0f * GLfloat(cellSizePx) / GLfloat(winRectPx.height());
size_t vertixesCount = (linesCountH + linesCountV) * 2;
StArray<StGLVec4> vertArray(vertixesCount);
// insert black gap to make quads
StGLVec2 blackGap(GLfloat(winRectPx.width() - cellSizePx * (linesCountV - 1)) / GLfloat(winRectPx.width()),
GLfloat(winRectPx.height() - cellSizePx * (linesCountH - 1)) / GLfloat(winRectPx.height()));
StGLVec2 bottomLeft = StGLVec2(-1.0f) + blackGap;
StGLVec2 fat = StGLVec2( 2.0f) - blackGap * 2.0f;
// horizontal lines
for(size_t lineId = 0; lineId < linesCountH; ++lineId) {
GLfloat anY = bottomLeft.y() + fat.y() * (GLfloat(lineId) / GLfloat(linesCountH - 1));
vertArray[2 * lineId] = StGLVec4(-1.0f, anY, 0.0f, 1.0f);
vertArray[2 * lineId + 1] = StGLVec4( 1.0f, anY, 0.0f, 1.0f);
}
// vertical lines
for(size_t lineId = 0; lineId < linesCountV; ++lineId) {
GLfloat anX = bottomLeft.x() + fat.x() * (GLfloat(lineId) / GLfloat(linesCountV - 1));
vertArray[2 * linesCountH + 2 * lineId] = StGLVec4(anX, -1.0f, 0.0f, 1.0f);
vertArray[2 * linesCountH + 2 * lineId + 1] = StGLVec4(anX, 1.0f, 0.0f, 1.0f);
}
myGrid.changeVBO(ST_VBO_VERTEX)->init(aCtx, vertArray);
// white color
StArray<StGLVec4> lColorsArray(vertixesCount, StGLVec4(1.0f));
myGrid.changeVBO(ST_VBO_COLORS)->init(aCtx, lColorsArray);
// bottom left circle
myCircles[0].create(StGLVec3(bottomLeft + myCellSize),
myCellSize.x(), myCellSize.y(), 64);
// bottom right circle
myCircles[1].create(StGLVec3(bottomLeft + myCellSize * StGLVec2(GLfloat(linesCountV - 2), 1.0f)),
myCellSize.x(), myCellSize.y(), 64);
// top left circle
myCircles[2].create(StGLVec3(bottomLeft + myCellSize * StGLVec2(1.0f, GLfloat(linesCountH - 2))),
myCellSize.x(), myCellSize.y(), 64);
// top right circle
myCircles[3].create(StGLVec3(bottomLeft + myCellSize * StGLVec2(GLfloat(linesCountV - 2), GLfloat(linesCountH - 2))),
myCellSize.x(), myCellSize.y(), 64);
// center circle
GLfloat minSize = 0.5f * (((linesCountV < linesCountH) ? linesCountV : linesCountH) - 1);
myCircles[4].create(StGLVec3(0.0f),
myCellSize.x() * minSize, myCellSize.y() * minSize, 64);
// white color
for(size_t aCircleId = 0; aCircleId < 5; ++aCircleId) {
myCircles[aCircleId].computeMesh();
myCircles[aCircleId].initColorsArray(StGLVec4(1.0f));
myCircles[aCircleId].initVBOs(aCtx);
}
}
