15 lines
449 B
C
15 lines
449 B
C
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/* Parameterization form, given A*t*t + 2*B*t*(1-t) + C*(1-t)*(1-t)
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*
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* a = A - 2*B + C
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* b = 2*B - 2*C
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* c = C
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*/
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static void set_abc(const double* quad, double& a, double& b, double& c) {
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a = quad[0]; // a = A
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b = 2 * quad[2]; // b = 2*B
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c = quad[4]; // c = C
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b -= c; // b = 2*B - C
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a -= b; // a = A - 2*B + C
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b -= c; // b = 2*B - 2*C
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}
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