vsrc_mandelbrot: simplify second bailout search by not recalculating values.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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@ -264,25 +264,22 @@ static void draw_mandelbrot(AVFilterContext *ctx, uint32_t *color, int linesize,
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Z_Z2_C_ZYKLUS(t, zi, zr, zi, 0)
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i++;
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Z_Z2_C_ZYKLUS(zr, zi, t, zi, 1)
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if(zr*zr + zi*zi > mb->bailout)
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break;
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}
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i-= FFMIN(7, i);
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zr= mb->zyklus[i][0];
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zi= mb->zyklus[i][1];
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for(; i<mb->maxiter; i++){
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double t;
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if(zr*zr + zi*zi > mb->bailout){
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switch(mb->outer){
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case ITERATION_COUNT: zr = i - (SQR(zr-cr)+SQR(zi-ci) > SQR(mb->bailout)); break;
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case NORMALIZED_ITERATION_COUNT: zr= i + log2(log(mb->bailout) / log(zr*zr + zi*zi)); break;
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i-= FFMIN(7, i);
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for(; i<mb->maxiter; i++){
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zr= mb->zyklus[i][0];
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zi= mb->zyklus[i][1];
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if(zr*zr + zi*zi > mb->bailout){
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switch(mb->outer){
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case ITERATION_COUNT: zr = i; break;
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case NORMALIZED_ITERATION_COUNT: zr= i + log2(log(mb->bailout) / log(zr*zr + zi*zi)); break;
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}
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c= lrintf((sin(zr)+1)*127) + lrintf((sin(zr/1.234)+1)*127)*256*256 + lrintf((sin(zr/100)+1)*127)*256;
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break;
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}
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}
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c= lrintf((sin(zr)+1)*127) + lrintf((sin(zr/1.234)+1)*127)*256*256 + lrintf((sin(zr/100)+1)*127)*256;
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break;
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}
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Z_Z2_C_ZYKLUS(t, zi, zr, zi, 0)
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i++;
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Z_Z2_C_ZYKLUS(zr, zi, t, zi, 1)
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}
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if(!c){
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if(mb->inner==PERIOD){
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