C++ (Cpp) horizontalIntersect Examples

Example #1

File: LineQuadraticIntersection.cpp Project: gw280/skia

int horizontalIntersect(double axisIntercept, double left, double right) {
    int roots = horizontalIntersect(axisIntercept);
    for (int index = 0; index < roots; ) {
        double x;
        xy_at_t(quad, intersections.fT[0][index], x, *(double*) NULL);
        double lineT = (x - left) / (right - left);
        if (lineIntersects(lineT, index, roots)) {
            ++index;
        }
    }
    return roots;
}

Example #2

File: SkDQuadLineIntersection.cpp Project: JoKaWare/GViews

 int horizontalIntersect(double axisIntercept, double left, double right, bool flipped) {
     addHorizontalEndPoints(left, right, axisIntercept);
     double rootVals[2];
     int roots = horizontalIntersect(axisIntercept, rootVals);
     for (int index = 0; index < roots; ++index) {
         double quadT = rootVals[index];
         SkDPoint pt = quad.xyAtT(quadT);
         double lineT = (pt.fX - left) / (right - left);
         if (PinTs(&quadT, &lineT)) {
             intersections->insert(quadT, lineT, pt);
         }
     }
     if (flipped) {
         intersections->flip();
     }
     return intersections->used();
 }

Example #3

File: LineQuadraticIntersection.cpp Project: Cue/skia

int horizontalIntersect(double axisIntercept, double left, double right, bool flipped) {
    addHorizontalEndPoints(left, right, axisIntercept);
    double rootVals[2];
    int roots = horizontalIntersect(axisIntercept, rootVals);
    for (int index = 0; index < roots; ++index) {
        double x;
        double quadT = rootVals[index];
        xy_at_t(quad, quadT, x, *(double*) NULL);
        double lineT = (x - left) / (right - left);
        if (pinTs(quadT, lineT)) {
            intersections.insert(quadT, lineT);
        }
    }
    if (flipped) {
        flip();
    }
    return intersections.fUsed;
}

Example #4

File: SkDQuadLineIntersection.cpp Project: CodeSpeaker/gecko-dev

 int horizontalIntersect(double axisIntercept, double left, double right, bool flipped) {
     addExactHorizontalEndPoints(left, right, axisIntercept);
     if (fAllowNear) {
         addNearHorizontalEndPoints(left, right, axisIntercept);
     }
     double rootVals[2];
     int roots = horizontalIntersect(axisIntercept, rootVals);
     for (int index = 0; index < roots; ++index) {
         double quadT = rootVals[index];
         SkDPoint pt = fQuad.ptAtT(quadT);
         double lineT = (pt.fX - left) / (right - left);
         if (pinTs(&quadT, &lineT, &pt, kPointInitialized)) {
             fIntersections->insert(quadT, lineT, pt);
         }
     }
     if (flipped) {
         fIntersections->flip();
     }
     return fIntersections->used();
 }

Example #5

File: LineQuadraticIntersection.cpp Project: gw280/skia

double axialIntersect(const Quadratic& q1, const _Point& p, bool vertical) {
    if (vertical) {
        return verticalIntersect(q1, p);
    }
    return horizontalIntersect(q1, p);
}