Ejemplos de add_line_to_segment en C++ (Cpp)

Ejemplo n.º 1

Archivo: GrAAConvexPathRenderer.cpp Proyecto: amyvmiwei/skia

static inline void add_quad_segment(const SkPoint pts[3],
                                    SegmentArray* segments) {
    if (pts[0].distanceToSqd(pts[1]) < kCloseSqd || pts[1].distanceToSqd(pts[2]) < kCloseSqd) {
        if (pts[0] != pts[2]) {
            add_line_to_segment(pts[2], segments);
        }
    } else {
        segments->push_back();
        segments->back().fType = Segment::kQuad;
        segments->back().fPts[0] = pts[1];
        segments->back().fPts[1] = pts[2];
    }
}

Ejemplo n.º 2

Archivo: GrAAConvexPathRenderer.cpp Proyecto: exploreword/skia

static inline void add_quad_segment(const SkPoint pts[3],
                                    SegmentArray* segments,
                                    SkRect* devBounds) {
    if (pts[0].distanceToSqd(pts[1]) < kCloseSqd || pts[1].distanceToSqd(pts[2]) < kCloseSqd) {
        if (pts[0] != pts[2]) {
            add_line_to_segment(pts[2], segments, devBounds);
        }
    } else {
        segments->push_back();
        segments->back().fType = Segment::kQuad;
        segments->back().fPts[0] = pts[1];
        segments->back().fPts[1] = pts[2];
        SkASSERT(contains_inclusive(*devBounds, pts[0]));
        devBounds->growToInclude(pts + 1, 2);
    }
}

Ejemplo n.º 3

Archivo: GrAAConvexPathRenderer.cpp Proyecto: exploreword/skia

static bool get_segments(const SkPath& path,
                         const SkMatrix& m,
                         SegmentArray* segments,
                         SkPoint* fanPt,
                         int* vCount,
                         int* iCount,
                         SkRect* devBounds) {
    SkPath::Iter iter(path, true);
    // This renderer over-emphasizes very thin path regions. We use the distance
    // to the path from the sample to compute coverage. Every pixel intersected
    // by the path will be hit and the maximum distance is sqrt(2)/2. We don't
    // notice that the sample may be close to a very thin area of the path and
    // thus should be very light. This is particularly egregious for degenerate
    // line paths. We detect paths that are very close to a line (zero area) and
    // draw nothing.
    DegenerateTestData degenerateData;
    SkPath::Direction dir;
    // get_direction can fail for some degenerate paths.
    if (!get_direction(path, m, &dir)) {
        return false;
    }

    for (;;) {
        SkPoint pts[4];
        SkPath::Verb verb = iter.next(pts);
        switch (verb) {
            case SkPath::kMove_Verb:
                m.mapPoints(pts, 1);
                update_degenerate_test(&degenerateData, pts[0]);
                devBounds->set(pts->fX, pts->fY, pts->fX, pts->fY);
                break;
            case SkPath::kLine_Verb: {
                m.mapPoints(&pts[1], 1);
                update_degenerate_test(&degenerateData, pts[1]);
                add_line_to_segment(pts[1], segments, devBounds);
                break;
            }
            case SkPath::kQuad_Verb:
                m.mapPoints(pts, 3);
                update_degenerate_test(&degenerateData, pts[1]);
                update_degenerate_test(&degenerateData, pts[2]);
                add_quad_segment(pts, segments, devBounds);
                break;
            case SkPath::kCubic_Verb: {
                m.mapPoints(pts, 4);
                update_degenerate_test(&degenerateData, pts[1]);
                update_degenerate_test(&degenerateData, pts[2]);
                update_degenerate_test(&degenerateData, pts[3]);
                add_cubic_segments(pts, dir, segments, devBounds);
                break;
            };
            case SkPath::kDone_Verb:
                if (degenerateData.isDegenerate()) {
                    return false;
                } else {
                    compute_vectors(segments, fanPt, dir, vCount, iCount);
                    return true;
                }
            default:
                break;
        }
    }
}