INNER CODE UNIT · C++

dot

camila314/gdp · Slerp2D.cpp:10

    float dot = (cosStart * cosEnd) + (sinStart * sinEnd);

    float weightStart, weightEnd;
    if (dot < 0.f) {
        dot = -dot;
        sinEnd = -sinEnd;
        cosEnd = -cosEnd;
    }

    if (1.f - dot > 0.0001f) {
        float theta = acosf(dot);
        float sinTheta = sinf(theta);
        weightStart = sinf(theta * (1.f - t)) / sinTheta;
        weightEnd   = sinf(theta * t) / sinTheta;
    } else {
        weightStart = 1.f - t;
        weightEnd   = t;
    }

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