Jan/WLED_MM_Infinity
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remove slow and inaccurate math from time critical code

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as it turns out, the "_t" functions (from wled_math.cpp) are about 3 times (!!!) slower than the standard functions.

* mapping modes : Arc and Circle
* effects: 2D Drift, 2D Drift Rose
This commit is contained in:
Frank
2024-02-25 19:36:29 +01:00
parent ff56cf0ee9
commit e0f08864a2
2 changed files with 16 additions and 16 deletions
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20
wled00/FX.cpp
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@@ -5062,8 +5062,8 @@ uint16_t mode_2DDrift() { // By: Stepko https://editor.soulmateli
unsigned long t_20 = t/20; // softhack007: pre-calculating this gives about 10% speedup
for (float i = 1; i < maxDim; i += 0.25) {
float angle = radians(t * (maxDim - i));
uint16_t myX = (cols>>1) + (uint16_t)(sin_t(angle) * i) + (cols%2);
uint16_t myY = (rows>>1) + (uint16_t)(cos_t(angle) * i) + (rows%2);
uint16_t myX = (cols>>1) + (uint16_t)(sinf(angle) * i) + (cols%2);
uint16_t myY = (rows>>1) + (uint16_t)(cosf(angle) * i) + (rows%2);
SEGMENT.setPixelColorXY(myX, myY, ColorFromPalette(SEGPALETTE, (i * 20) + t_20, 255, LINEARBLEND));
}
SEGMENT.blur(SEGMENT.intensity>>3);
@@ -5338,8 +5338,8 @@ uint16_t mode_2DJulia(void) { // An animated Julia set
reAl = -0.94299f; // PixelBlaze example
imAg = 0.3162f;
reAl += sin_t((float)strip.now/305.f)/20.f;
imAg += sin_t((float)strip.now/405.f)/20.f;
reAl += sinf((float)strip.now/305.f)/20.f;
imAg += sinf((float)strip.now/405.f)/20.f;
dx = (xmax - xmin) / (cols); // Scale the delta x and y values to our matrix size.
dy = (ymax - ymin) / (rows);
@@ -6067,8 +6067,8 @@ uint16_t mode_2Dghostrider(void) {
CRGB color = CRGB::White;
SEGMENT.wu_pixel(lighter->gPosX * 256 / 10, lighter->gPosY * 256 / 10, color);
lighter->gPosX += lighter->Vspeed * sin_t(radians(lighter->gAngle));
lighter->gPosY += lighter->Vspeed * cos_t(radians(lighter->gAngle));
lighter->gPosX += lighter->Vspeed * sinf(radians(lighter->gAngle));
lighter->gPosY += lighter->Vspeed * cosf(radians(lighter->gAngle));
lighter->gAngle += lighter->angleSpeed;
if (lighter->gPosX < 0) lighter->gPosX = (cols - 1) * 10;
if (lighter->gPosX > (cols - 1) * 10) lighter->gPosX = 0;
@@ -6090,8 +6090,8 @@ uint16_t mode_2Dghostrider(void) {
lighter->time[i] = 0;
lighter->reg[i] = false;
} else {
lighter->lightersPosX[i] += -7 * sin_t(radians(lighter->Angle[i]));
lighter->lightersPosY[i] += -7 * cos_t(radians(lighter->Angle[i]));
lighter->lightersPosX[i] += -7 * sinf(radians(lighter->Angle[i]));
lighter->lightersPosY[i] += -7 * cosf(radians(lighter->Angle[i]));
}
SEGMENT.wu_pixel(lighter->lightersPosX[i] * 256 / 10, lighter->lightersPosY[i] * 256 / 10, ColorFromPalette(SEGPALETTE, (256 - lighter->time[i])));
}
@@ -6303,8 +6303,8 @@ uint16_t mode_2Ddriftrose(void) {
SEGMENT.fadeToBlackBy(32+(SEGMENT.speed>>3));
for (size_t i = 1; i < 37; i++) {
uint32_t x = (CX + (sin_t(radians(i * 10)) * (beatsin8(i, 0, L*2)-L))) * 255.f;
uint32_t y = (CY + (cos_t(radians(i * 10)) * (beatsin8(i, 0, L*2)-L))) * 255.f;
uint32_t x = (CX + (sinf(radians(i * 10)) * (beatsin8(i, 0, L*2)-L))) * 255.f;
uint32_t y = (CY + (cosf(radians(i * 10)) * (beatsin8(i, 0, L*2)-L))) * 255.f;
SEGMENT.wu_pixel(x, y, CHSV(i * 10, 255, 255));
}
SEGMENT.blur((SEGMENT.intensity>>4)+1);

12
wled00/FX_fcn.cpp
View File

@@ -892,8 +892,8 @@ void IRAM_ATTR_YN Segment::setPixelColor(int i, uint32_t col) //WLEDMM: IRAM_ATT
float step = HALF_PI / (2.85f*i);
for (float rad = 0.0f; rad <= HALF_PI+step/2; rad += step) {
// may want to try float version as well (with or without antialiasing)
int x = roundf(sin_t(rad) * i);
int y = roundf(cos_t(rad) * i);
int x = roundf(sinf(rad) * i);
int y = roundf(cosf(rad) * i);
setPixelColorXY(x, y, col);
}
// Bresenham’s Algorithm (may not fill every pixel)
@@ -923,8 +923,8 @@ void IRAM_ATTR_YN Segment::setPixelColor(int i, uint32_t col) //WLEDMM: IRAM_ATT
case M12_sCircle: //WLEDMM
if (vStrip > 0)
{
int x = roundf(sin_t(360*i/SEGLEN*DEG_TO_RAD) * vW * (vStrip+1)/nrOfVStrips());
int y = roundf(cos_t(360*i/SEGLEN*DEG_TO_RAD) * vW * (vStrip+1)/nrOfVStrips());
int x = roundf(sinf(360*i/SEGLEN*DEG_TO_RAD) * vW * (vStrip+1)/nrOfVStrips());
int y = roundf(cosf(360*i/SEGLEN*DEG_TO_RAD) * vW * (vStrip+1)/nrOfVStrips());
setPixelColorXY(x + vW/2, y + vH/2, col);
}
else // pArc -> circle
@@ -1101,8 +1101,8 @@ uint32_t Segment::getPixelColor(int i)
case M12_sCircle: //WLEDMM
if (vStrip > 0)
{
int x = roundf(sin_t(360*i/SEGLEN*DEG_TO_RAD) * vW * (vStrip+1)/nrOfVStrips());
int y = roundf(cos_t(360*i/SEGLEN*DEG_TO_RAD) * vW * (vStrip+1)/nrOfVStrips());
int x = roundf(sinf(360*i/SEGLEN*DEG_TO_RAD) * vW * (vStrip+1)/nrOfVStrips());
int y = roundf(cosf(360*i/SEGLEN*DEG_TO_RAD) * vW * (vStrip+1)/nrOfVStrips());
return getPixelColorXY(x + vW/2, y + vH/2);
}
else