Example #1
0
void SkGlyphCache::AddQuad(const SkPoint pts[2], SkScalar axis, bool yAxis,
                     SkGlyph::Intercept* intercept) {
    SkDQuad quad;
    quad.set(pts);
    double roots[2];
    int count = yAxis ? quad.verticalIntersect(axis, roots)
            : quad.horizontalIntersect(axis, roots);
    while (--count >= 0) {
        SkPoint pt = quad.ptAtT(roots[count]).asSkPoint();
        AddInterval(*(&pt.fX + yAxis), intercept);
    }
}
Example #2
0
SkPath::Verb SkReduceOrder::Quad(const SkPoint a[3], SkPoint* reducePts) {
    SkDQuad quad;
    quad.set(a);
    SkReduceOrder reducer;
    int order = reducer.reduce(quad);
    if (order == 2) {  // quad became line
        for (int index = 0; index < order; ++index) {
            *reducePts++ = reducer.fLine[index].asSkPoint();
        }
    }
    return SkPathOpsPointsToVerb(order - 1);
}
Example #3
0
static void setup(const SortSet* set, const size_t idx,
        SkOpSegment* seg, int* ts, const SkPoint& startPt) {
    SkPoint start, end;
    const SkPoint* data = set[idx].ptData;
    bool useIntersectPt = startPt.fX != 0 || startPt.fY != 0;
    if (useIntersectPt) {
        start = startPt;
        end = set[idx].endPt;
    }
    switch(set[idx].ptCount) {
        case 2: {
            SkASSERT(ValidPoints(data, 2));
            seg->addLine(data, false, false);
            SkDLine dLine;
            dLine.set(set[idx].ptData);
            SkASSERT(ValidLine(dLine));
            if (useIntersectPt) {
                break;
            }
            start = dLine.ptAtT(set[idx].tStart).asSkPoint();
            end = dLine.ptAtT(set[idx].tEnd).asSkPoint();
            } break;
        case 3: {
            SkASSERT(ValidPoints(data, 3));
            seg->addQuad(data, false, false);
            SkDQuad dQuad;
            dQuad.set(set[idx].ptData);
            SkASSERT(ValidQuad(dQuad));
             if (useIntersectPt) {
                break;
            }
            start = dQuad.ptAtT(set[idx].tStart).asSkPoint();
            end = dQuad.ptAtT(set[idx].tEnd).asSkPoint();
            } break;
        case 4: {
            SkASSERT(ValidPoints(data, 4));
            seg->addCubic(data, false, false);
            SkDCubic dCubic;
            dCubic.set(set[idx].ptData);
            SkASSERT(ValidCubic(dCubic));
            if (useIntersectPt) {
                break;
            }
            start = dCubic.ptAtT(set[idx].tStart).asSkPoint();
            end = dCubic.ptAtT(set[idx].tEnd).asSkPoint();
            } break;
    }
    double tStart = set[idx].tStart;
    double tEnd = set[idx].tEnd;
    seg->addT(NULL, start, tStart);
    seg->addT(NULL, end, tEnd);
    if (tStart != 0 && tEnd != 0) {
        seg->addT(NULL, set[idx].ptData[0], 0);
    }
    if (tStart != 1 && tEnd != 1) {
        seg->addT(NULL, set[idx].ptData[set[idx].ptCount - 1], 1);
    }
    int tIndex = 0;
    ts[0] = 0;
    ts[1] = 1;
    do {
        if (seg->t(tIndex) == set[idx].tStart) {
            ts[0] = tIndex;
        }
        if (seg->t(tIndex) == set[idx].tEnd) {
            ts[1] = tIndex;
        }
        if (seg->t(tIndex) >= 1) {
            break;
        }
    } while (++tIndex);
}