applyFancyEffect()

void applyFancyEffect	(	uint32_t	now,
		bool	button_active )

Definition at line 167 of file wavefx.cpp.

                                                        {
    // Calculate the total animation duration based on the speed slider
    // Higher fancySpeed value = shorter duration (faster animation)
    uint32_t total =
        map(fancySpeed.as<uint32_t>(), 0, fancySpeed.getMax(), 1000, 100);
    
    // Create a static TimeRamp to manage the animation timing
    // TimeRamp handles the transition from start to end over time
    static TimeRamp pointTransition = TimeRamp(total, 0, 0);
 
    // If the button is active, start/restart the animation
    if (button_active) {
        pointTransition.trigger(now, total, 0, 0);
    }
 
    // If the animation isn't currently active, exit early
    if (!pointTransition.isActive(now)) {
        // no need to draw
        return;
    }
    
    // Find the center of the display
    int mid_x = WIDTH / 2;
    int mid_y = HEIGHT / 2;
    
    // Calculate the maximum distance from center (half the width)
    int amount = WIDTH / 2;
    
    // Calculate the start and end coordinates for the cross
    int start_x = mid_x - amount;  // Leftmost point
    int end_x = mid_x + amount;    // Rightmost point
    int start_y = mid_y - amount;  // Topmost point
    int end_y = mid_y + amount;    // Bottommost point
    
    // Get the current animation progress (0-255)
    int curr_alpha = pointTransition.update8(now);
    
    // Map the animation progress to the four points of the expanding cross
    // As curr_alpha increases from 0 to 255, these points move from center to edges
    int left_x = map(curr_alpha, 0, 255, mid_x, start_x);  // Center to left
    int down_y = map(curr_alpha, 0, 255, mid_y, start_y);  // Center to top
    int right_x = map(curr_alpha, 0, 255, mid_x, end_x);   // Center to right
    int up_y = map(curr_alpha, 0, 255, mid_y, end_y);      // Center to bottom
 
    // Convert the 0-255 alpha to 0.0-1.0 range
    float curr_alpha_f = curr_alpha / 255.0f;
 
    // Calculate the wave height value - starts high and decreases as animation progresses
    // This makes the waves stronger at the beginning of the animation
    float valuef = (1.0f - curr_alpha_f) * fancyIntensity.value() / 255.0f;
 
    // Calculate the width of the cross lines
    int span = fancyParticleSpan.value() * WIDTH;
    
    // Add wave energy along the four expanding lines of the cross
    // Each line is a horizontal or vertical span of pixels
    
    // Left-moving horizontal line
    for (int x = left_x - span; x < left_x + span; x++) {
        waveFxLower.addf(x, mid_y, valuef);  // Add to lower layer
        waveFxUpper.addf(x, mid_y, valuef);  // Add to upper layer
    }
 
    // Right-moving horizontal line
    for (int x = right_x - span; x < right_x + span; x++) {
        waveFxLower.addf(x, mid_y, valuef);
        waveFxUpper.addf(x, mid_y, valuef);
    }
 
    // Downward-moving vertical line
    for (int y = down_y - span; y < down_y + span; y++) {
        waveFxLower.addf(mid_x, y, valuef);
        waveFxUpper.addf(mid_x, y, valuef);
    }
 
    // Upward-moving vertical line
    for (int y = up_y - span; y < up_y + span; y++) {
        waveFxLower.addf(mid_x, y, valuef);
        waveFxUpper.addf(mid_x, y, valuef);
    }
}

References fancyIntensity, fancyParticleSpan, fancySpeed, HEIGHT, fl::TimeRamp::isActive(), fl::TimeRamp::trigger(), fl::TimeRamp::update8(), waveFxLower, waveFxUpper, WIDTH, x, and y.

Referenced by wavefx_loop().

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