Life Cycle

Functions that are called at particular instances within the Linear Shader

init()

Called before the Shader starts taking in the Audio Data. 

void init() {
    // Set all the required audioSettings attributes here
    audioSettings.mode = 1;
    audioSettings.combineChannels = 0;

    // Audio Multipliers
    particle.audio.multiplier = 120;
    bar.audio.multiplier = 220;

    // Enabling Connectors
    particle.connector.left.enable = 1;
    particle.connector.right.enable = 1;

    // Enabling Merged Bars
    bar.mergeLeftBar = 1;
    bar.mergeRightBar = 1;

    // Additionally, always clamping the ends of the merged bars so that only the borders get shown
    bar.clampLeftMergeBorder = 1;
    bar.clampRightMergeBorder = 1;
}

audioFetch()

Called just after the Audio Data has been fed into the Shader. Fetched Audio is in the normalised Range [0, 1], and after the function returns, gets multiplied by the multiplier values. 

void audioFetch(inout float fetchedAudio, float n, float lastN) {
    fetchedAudio = 1. - fetchedAudio;
}

setOffsets()

Ensures proper Offset Synchronisation when bar.mergeLeftBar / bar.mergeRightBar or particle.connector.left.enable / particle.connector.right.enable is set to 1. 

void setOffsets(float direction, inout vec2 particleOffset, inout vec2 barOffset, inout vec2 barSizeOffset, vec2 barAudio, vec2 particleAudio, float xCoordinate, float n, float lastN) {
    particleOffset.y = 120 * sin(12.5 * x);
    barSizeOffset.x = 9 * mod(int(n), 2);
    barOffset.y = -16 * int((barAudio.x) / 16);
}

setProps()

Sets various visual properties of the Shader, such as Size, Softness, and Color. 

void setProps() {
    particle.radius = 12;
    particle.borderSize = 3;
    particle.color = vec4(1);
    particle.borderColor = vec4(1, 0, 0, 1);
}

setParticleDownProps()

Can be used to change the properties of the Particles that move downwards. 

void setParticleDownProps() {
    particle.radius = 4;
    particle.color = vec4(0, 0, 1, 1);
}

modifySDFs()

Can be used to change the shapes of all the objects that will be drawn via the Shader. Colors are applied just after this Function. 

void modifySDFs() {
    sdfs[BAR_INNER_SDF] *= sdfs[PARTICLE_UP_INNER_SDF];
}