24 lines
612 B
C
24 lines
612 B
C
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#ifndef CONVERGE_HELPER_H
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#define CONVERGE_HELPER_H
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static inline unsigned converge(float c_real, float c_imag, unsigned n) {
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float real = 0.0f;
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float imag = 0.0f;
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for (unsigned i = 0; i < n; i++) {
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float real2 = real * real;
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float imag2 = imag * imag;
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// If the pixel has diverged calculate the value and return it
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if (real2 + imag2 > 4.0f) {
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return 255 - 4 * (i % 64);
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}
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// Calculate imaginary and real parts separately
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imag = -2.0f * real * imag + c_imag;
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real = real2 - imag2 + c_real;
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}
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return 0;
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}
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#endif |