updated scaling
This commit is contained in:
Damian Schneider
@@ -519,12 +519,12 @@ uint32_t hashInt(uint32_t s);
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int32_t perlin1D_raw(uint32_t x, bool is16bit = false);
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int32_t perlin2D_raw(uint32_t x, uint32_t y, bool is16bit = false);
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int32_t perlin3D_raw(uint32_t x, uint32_t y, uint32_t z, bool is16bit = false);
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uint8_t perlin8(uint16_t x);
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uint8_t perlin8(uint16_t x, uint16_t y);
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uint8_t perlin8(uint16_t x, uint16_t y, uint16_t z);
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uint16_t perlin16(uint32_t x);
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uint16_t perlin16(uint32_t x, uint32_t y);
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uint16_t perlin16(uint32_t x, uint32_t y, uint32_t z);
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uint8_t perlin8(uint16_t x);
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uint8_t perlin8(uint16_t x, uint16_t y);
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uint8_t perlin8(uint16_t x, uint16_t y, uint16_t z);
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// fast (true) random numbers using hardware RNG, all functions return values in the range lowerlimit to upperlimit-1
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// note: for true random numbers with high entropy, do not call faster than every 200ns (5MHz)
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@@ -631,7 +631,7 @@ static inline __attribute__((always_inline)) int32_t hashToGradient(uint32_t h)
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//return (h & 0xFF) - 128; // use PERLIN_SHIFT 7
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//return (h & 0x0F) - 8; // use PERLIN_SHIFT 3
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//return (h & 0x07) - 4; // use PERLIN_SHIFT 2
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return (h & 0x03) - 2; // use PERLIN_SHIFT 1
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return (h & 0x03) - 2; // use PERLIN_SHIFT 1 -> closest to original fastled version
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}
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// Gradient functions for 1D, 2D and 3D Perlin noise note: forcing inline produces smaller code and makes it 3x faster!
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@@ -658,6 +658,17 @@ static inline __attribute__((always_inline)) int32_t gradient3D(uint32_t x0, int
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h ^= h >> 15;
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h *= 0x92C3412B;
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h ^= h >> 13;
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/*
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// fastled version: 25% slower but gives original "look"
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h = h&15;
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int32_t u = h<8?dx:dy;
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int32_t v = h<4?dy:h==12||h==14?dx:dz;
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if(h&1) { u = -u; }
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if(h&2) { v = -v; }
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return (u >> 1) + (v >> 1) + (u & 0x1);
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*/
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// closer to actual perlin version
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return ((hashToGradient(h) * dx + hashToGradient(h>>(1+PERLIN_SHIFT)) * dy + hashToGradient(h>>(1 + 2*PERLIN_SHIFT)) * dz) * 85) >> (8 + PERLIN_SHIFT); // scale to 16bit, x*85 >> 8 = x/3
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}
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@@ -665,7 +676,7 @@ static inline __attribute__((always_inline)) int32_t gradient3D(uint32_t x0, int
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static uint32_t smoothstep(const uint32_t t) {
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uint32_t t_squared = (t * t) >> 16;
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uint32_t factor = (3 << 16) - ((t << 1));
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return (t_squared * factor) >> 18; // scale to avoid overflows
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return (t_squared * factor) >> 18; // scale to avoid overflows and give best resolution
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}
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// simple linear interpolation for fixed-point values, scaled for perlin noise use
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@@ -771,25 +782,26 @@ int32_t perlin3D_raw(uint32_t x, uint32_t y, uint32_t z, bool is16bit) {
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uint16_t perlin16(uint32_t x) {
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//return ((perlin1D_raw(x) * 1168) >> 10) + 0x7FFF; //scale to 16bit and offset (full range)
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return ((perlin1D_raw(x) * 895) >> 10) + 34616; //scale to 16bit and offset (fastled range)
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//return ((perlin1D_raw(x) * 895) >> 10) + 34616; //scale to 16bit and offset (fastled range) -> 8 steps
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return ((perlin1D_raw(x) * 1159) >> 10) + 32803; //scale to 16bit and offset (fastled range) -> 8 steps
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}
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uint16_t perlin16(uint32_t x, uint32_t y) {
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return ((perlin2D_raw(x, y) * 1359) >> 10) + 31508; //scale to 16bit and offset (empirical values with some overflow safety margin)
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return ((perlin2D_raw(x, y) * 1537) >> 10) + 32725; //scale to 16bit and offset (empirical values with some overflow safety margin)
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}
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uint16_t perlin16(uint32_t x, uint32_t y, uint32_t z) {
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return ((perlin3D_raw(x, y, z) * 1923) >> 10) + 31290; //scale to 16bit and offset (empirical values with some overflow safety margin)
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return ((perlin3D_raw(x, y, z) * 1731) >> 10) + 33147; //scale to 16bit and offset (empirical values with some overflow safety margin)
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}
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uint8_t perlin8(uint16_t x) {
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return (((perlin1D_raw((uint32_t)x << 8, true) * 1168) >> 10) + 0x7FFF) >> 8;
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return (((perlin1D_raw((uint32_t)x << 8, true) * 1353) >> 10) + 32769) >> 8;
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}
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uint8_t perlin8(uint16_t x, uint16_t y) {
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return (((perlin2D_raw((uint32_t)x << 8, (uint32_t)y << 8, true) * 1359) >> 10) + 31508) >> 8;
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return (((perlin2D_raw((uint32_t)x << 8, (uint32_t)y << 8, true) * 1620) >> 10) + 32771) >> 8;
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}
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uint8_t perlin8(uint16_t x, uint16_t y, uint16_t z) {
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return (((perlin3D_raw((uint32_t)x << 8, (uint32_t)y << 8, (uint32_t)z << 8, true) * 1923) >> 10) + 31290) >> 8; //scale to 8bit
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return (((perlin3D_raw((uint32_t)x << 8, (uint32_t)y << 8, (uint32_t)z << 8, true) * 2015) >> 10) + 33168) >> 8; //scale to 8bit
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}
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225
wled00/wled.cpp
225
wled00/wled.cpp
@@ -339,231 +339,6 @@ void WLED::setup()
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#else
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DEBUG_PRINTLN(F("arduino-esp32 v1.0.x\n")); // we can't say in more detail.
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#endif
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uint32_t start;
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uint32_t end;
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uint32_t time;
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uint8_t offset = hw_random()+hw_random();
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delay(2000);
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/*
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//online serial plotter: https://sekigon-gonnoc.github.io/web-serial-plotter/ format is "valueA:213423, ValueB:123123, \n"
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for(int i = 0; i < 0xFFFFFFF; i+=10) {
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//Serial.print(inoise16(i, offset, (offset >> 3))); Serial.print(" "); //x
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//Serial.print(inoise16(offset, i, (offset >> 3))); Serial.print(" "); //y
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//Serial.print(inoise16(offset, (offset >> 3), i)); Serial.print(" "); //z
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//Serial.print(perlin16(i, offset, (offset >> 3))); Serial.print(" "); //x
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//Serial.print(perlin16(offset, i, (offset >> 3))); Serial.print(" "); //y
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//Serial.print(perlin16(offset, (offset >> 3), i)); Serial.print(" "); //z
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//Serial.print("Fastled:");Serial.print(inoise16(i, offset+i/2, i + (offset >> 3))); Serial.print(", "); //mixed mode
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//Serial.print("New:");Serial.println(perlin16(i, offset+i/2, i + (offset >> 3)));// Serial.println(", ");
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//Serial.print("Fastled:");Serial.print(inoise16(i, offset+i/2)); Serial.print(", "); //mixed mode
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//Serial.print("New:");Serial.println(perlin16(i, offset+i/2));// Serial.println(", ");
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//Serial.print("Fastled:");Serial.print(inoise16(i)); Serial.print(", "); //mixed mode
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//Serial.print("New:");Serial.println(perlin16(i));// Serial.println(", ");
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Serial.print("Fastled3D:");Serial.print(inoise8(i, offset+i/2, i + (offset >> 3))); Serial.print(", "); //mixed mode
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Serial.print("New3D:");Serial.print(perlin8(i, offset+i/2, i + (offset >> 3)));// Serial.println(", ");
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Serial.print(", ");
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Serial.print("Fastled2D:");Serial.print(inoise8(i, offset+i/2)); Serial.print(", "); //mixed mode
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Serial.print("New2D:");Serial.print(perlin8(i, offset+i/2));// Serial.println(", ");
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Serial.print(", ");
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Serial.print("Fastled1D:");Serial.print(inoise8(i)); Serial.print(", "); //mixed mode
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Serial.print("New1D:");Serial.println(perlin8(i));// Serial.println(", ");
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//Serial.print(inoise16(i, offset+i/2, i + (offset >> 3))); Serial.print(","); //mixed mode
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//Serial.println(perlin16(i, offset+i/2, i + (offset >> 3)));// Serial.println(", ");
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//delay(10);
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// Serial.println(perlin3D_raw(i, offset+i/4, i*2 + (offset >> 3))); //raw
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}*/
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/*
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for(int i = 0; i < 0x2FFFF; i+=100) {
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uint32_t pos = i + offset;
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Serial.print(inoise8_raw((pos)>>3, (pos)>>3)); Serial.print(",");
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Serial.print(inoise8((pos)>>3, (pos)>>3, (pos)>>3)); Serial.print(",");
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Serial.print(inoise16(pos*20, pos*30)); Serial.print(",");
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//Serial.print(inoise16_raw(pos*20, pos*30, pos*40)); Serial.print(",");
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Serial.print(inoise16(pos*20, pos*20, pos*20)); Serial.print(",");
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//Serial.print(((perlin1D_raw(pos*20)* 85)>>7) + 0x7FFF); Serial.print(",");
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Serial.print(perlin1D_raw(pos*20)); Serial.print(",");
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Serial.print(perlin2D_raw(pos*20, pos*20)); Serial.print(",");
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//Serial.print(perlin2D_raw(pos*20, pos*30) + 0x7FFF); Serial.print(",");
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Serial.println(perlin3D_raw(pos*20, pos*20, pos*20));
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//Serial.println(((perlin3D_raw(pos*20, pos*30, pos*40) * 85)>>7) + 0x7FFF);
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}*/
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/*
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for(int i = 0; i < 0xF0000; i+=55) {
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Serial.print(inoise8_raw(i,i+5648) / 2); Serial.print(","); // +/-32 ?
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Serial.print(((int16_t)perlin8(i,i+5648) - 0x7F) >> 2); Serial.print(",");
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Serial.print(inoise8(i,i/3,i/5)); Serial.print(",");
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Serial.print(perlin8(i,i/3,i/5)); Serial.print(",");
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Serial.print(inoise8(i,i/3)); Serial.print(",");
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Serial.print(perlin8(i,i/3)); Serial.print(",");
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Serial.print(inoise8(i)); Serial.print(",");
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Serial.println(perlin8(i));
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}
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*/
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int32_t minval=0xFFFFF;
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int32_t maxval=0;
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start = micros();
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for(int i = 0; i < 0xFFFFF; i+=50) {
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uint16_t pos = i + offset;
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int32_t noiseval = inoise8_raw(pos);
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if(noiseval < minval) minval = noiseval;
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if(noiseval > maxval) maxval = noiseval;
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}
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end = micros();
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time = end - start;
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Serial.print("time: "); Serial.print(time);
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Serial.print(" inoise8_raw min: "); Serial.print(minval); Serial.print(" max: "); Serial.println(maxval);
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minval=0xFFFFF;
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maxval=0;
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start = micros();
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for(int i = 0; i < 0xFFFFFF; i+=50) {
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uint32_t pos = i + offset;
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//int32_t noiseval = inoise16(pos, pos+4684165, pos+985685);
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int32_t noiseval = inoise16(hw_random(), hw_random(), hw_random());
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if(noiseval < minval) minval = noiseval;
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if(noiseval > maxval) maxval = noiseval;
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}
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end = micros();
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time = end - start;
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Serial.print("time: "); Serial.print(time);
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Serial.print(" inoise16_3D min: "); Serial.print(minval); Serial.print(" max: "); Serial.println(maxval);
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minval=0xFFFFF;
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maxval=0;
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start = micros();
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for(int i = 0; i < 0xFFFFFF; i+=50) {
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uint32_t pos = i + offset;
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//int32_t noiseval = perlin16(hw_random());
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int32_t noiseval = perlin1D_raw(hw_random(),false);
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if(noiseval < minval) minval = noiseval;
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if(noiseval > maxval) maxval = noiseval;
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}
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end = micros();
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time = end - start;
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Serial.print("time: "); Serial.print(time);
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Serial.print(" perlin1D raw min: "); Serial.print(minval); Serial.print(" max: "); Serial.println(maxval);
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minval=0xFFFFF;
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maxval=0;
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start = micros();
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for(int i = 0; i < 0xFFFFFF; i+=50) {
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uint32_t pos = i + offset;
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//int32_t noiseval = perlin16( hw_random(), hw_random());
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int32_t noiseval = perlin2D_raw( hw_random(), hw_random());
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if(noiseval < minval) minval = noiseval;
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if(noiseval > maxval) maxval = noiseval;
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}
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end = micros();
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time = end - start;
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Serial.print("time: "); Serial.print(time);
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Serial.print(" perlin2D raw min: "); Serial.print(minval); Serial.print(" max: "); Serial.println(maxval);
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minval=0xFFFFF;
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maxval=0;
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for(int i = 0; i < 0xFFFFFF; i+=50) {
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uint32_t pos = i + offset;
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//int32_t noiseval = perlin3D_raw(pos, pos+46845, pos+654684);
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//int32_t noiseval = perlin3D_raw(hw_random(), hw_random(), hw_random());
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int32_t noiseval = perlin16(hw_random(), hw_random(), hw_random());
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if(noiseval < minval) minval = noiseval;
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if(noiseval > maxval) maxval = noiseval;
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}
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end = micros();
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time = end - start;
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Serial.print("time: "); Serial.print(time);
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Serial.print(" perlin16 min: "); Serial.print(minval); Serial.print(" max: "); Serial.println(maxval);
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minval=0xFFFFF;
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maxval=0;
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for(int i = 0; i < 0xFFFFFF; i+=50) {
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uint32_t pos = i + offset;
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//int32_t noiseval = perlin3D_raw(pos, pos+46845, pos+654684);
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int32_t noiseval = perlin3D_raw(hw_random(), hw_random(), hw_random(),false);
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//int32_t noiseval = perlin16(hw_random(), hw_random(), hw_random());
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if(noiseval < minval) minval = noiseval;
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if(noiseval > maxval) maxval = noiseval;
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}
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end = micros();
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time = end - start;
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Serial.print("time: "); Serial.print(time);
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Serial.print(" perlin3D_raw min: "); Serial.print(minval); Serial.print(" max: "); Serial.println(maxval);
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volatile uint32_t temp;
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start = micros();
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for(int i = 0; i < 100000; i++){
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temp += inoise8(i);
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}
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end = micros();
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time = end - start;
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Serial.print("inoise8: ");
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Serial.print(temp);
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Serial.print("time: ");
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Serial.println(time);
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start = micros();
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for(int i = 0; i < 100000; i++){
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temp += inoise16(i,i<<1,i<<2);
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}
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end = micros();
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time = end - start;
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Serial.print("inoise16:");
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Serial.print(temp);
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Serial.print("time: ");
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Serial.println(time);
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start = micros();
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for(int i = 0; i < 100000; i++){
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temp += perlin1D_raw(i);
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}
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end = micros();
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time = end - start;
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Serial.print("perlin1Draw:");
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Serial.print(temp);
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Serial.print("time: ");
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Serial.println(time);
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start = micros();
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for(int i = 0; i < 100000; i++){
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temp += perlin2D_raw(i,i*33);
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}
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end = micros();
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time = end - start;
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Serial.print("perlin2Draw:");
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Serial.print(temp);
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Serial.print("time: ");
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Serial.println(time);
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start = micros();
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for(int i = 0; i < 100000; i++){
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temp += perlin16(i,i*33,i*17);
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}
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end = micros();
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time = end - start;
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Serial.print("perlin163D:");
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Serial.print(temp);
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Serial.print("time: ");
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Serial.println(time);
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start = micros();
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for(int i = 0; i < 100000; i++){
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temp += perlin3D_raw(i,i*33,i*17);
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}
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end = micros();
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time = end - start;
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Serial.print("perlin3D raw:");
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Serial.print(temp);
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Serial.print("time: ");
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Serial.println(time);
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DEBUG_PRINTF_P(PSTR("CPU: %s rev.%d, %d core(s), %d MHz.\n"), ESP.getChipModel(), (int)ESP.getChipRevision(), ESP.getChipCores(), ESP.getCpuFreqMHz());
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DEBUG_PRINTF_P(PSTR("FLASH: %d MB, Mode %d "), (ESP.getFlashChipSize()/1024)/1024, (int)ESP.getFlashChipMode());
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#ifdef WLED_DEBUG
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