mirror of
https://github.com/ninjamuffin99/Funkin.git
synced 2024-09-21 01:28:55 +00:00
450 lines
16 KiB
Haxe
450 lines
16 KiB
Haxe
package funkin.audio.waveform;
|
|
|
|
import funkin.audio.waveform.WaveformData;
|
|
import funkin.audio.waveform.WaveformDataParser;
|
|
import funkin.graphics.rendering.MeshRender;
|
|
import flixel.util.FlxColor;
|
|
|
|
class WaveformSprite extends MeshRender
|
|
{
|
|
static final DEFAULT_COLOR:FlxColor = FlxColor.WHITE;
|
|
static final DEFAULT_DURATION:Float = 5.0;
|
|
static final DEFAULT_ORIENTATION:WaveformOrientation = HORIZONTAL;
|
|
static final DEFAULT_X:Float = 0.0;
|
|
static final DEFAULT_Y:Float = 0.0;
|
|
static final DEFAULT_WIDTH:Float = 100.0;
|
|
static final DEFAULT_HEIGHT:Float = 100.0;
|
|
|
|
/**
|
|
* Set this to true to tell the waveform to rebuild itself.
|
|
* Do this any time the data or drawable area of the waveform changes.
|
|
* This often (but not always) needs to be done every frame.
|
|
*/
|
|
var isWaveformDirty:Bool = true;
|
|
|
|
/**
|
|
* If true, force the waveform to redraw every frame.
|
|
* Useful if the waveform's clipRect is constantly changing.
|
|
*/
|
|
public var forceUpdate:Bool = false;
|
|
|
|
public var waveformData(default, set):Null<WaveformData>;
|
|
|
|
function set_waveformData(value:Null<WaveformData>):Null<WaveformData>
|
|
{
|
|
if (waveformData == value) return value;
|
|
|
|
waveformData = value;
|
|
isWaveformDirty = true;
|
|
return waveformData;
|
|
}
|
|
|
|
/**
|
|
* The color to render the waveform with.
|
|
*/
|
|
public var waveformColor(default, set):FlxColor;
|
|
|
|
function set_waveformColor(value:FlxColor):FlxColor
|
|
{
|
|
if (waveformColor == value) return value;
|
|
|
|
waveformColor = value;
|
|
// We don't need to dirty the waveform geometry, just rebuild the texture.
|
|
rebuildGraphic();
|
|
return waveformColor;
|
|
}
|
|
|
|
public var orientation(default, set):WaveformOrientation;
|
|
|
|
function set_orientation(value:WaveformOrientation):WaveformOrientation
|
|
{
|
|
if (orientation == value) return value;
|
|
|
|
orientation = value;
|
|
isWaveformDirty = true;
|
|
return orientation;
|
|
}
|
|
|
|
/**
|
|
* Time, in seconds, at which the waveform starts.
|
|
*/
|
|
public var time(default, set):Float;
|
|
|
|
function set_time(value:Float)
|
|
{
|
|
if (time == value) return value;
|
|
|
|
time = value;
|
|
isWaveformDirty = true;
|
|
return time;
|
|
}
|
|
|
|
/**
|
|
* The duration, in seconds, that the waveform represents.
|
|
* The section of waveform from `time` to `time + duration` and `width` are used to determine how many samples each pixel represents.
|
|
*/
|
|
public var duration(default, set):Float;
|
|
|
|
function set_duration(value:Float)
|
|
{
|
|
if (duration == value) return value;
|
|
|
|
duration = value;
|
|
isWaveformDirty = true;
|
|
return duration;
|
|
}
|
|
|
|
/**
|
|
* Set the physical size of the waveform with `this.height = value`.
|
|
*/
|
|
override function set_height(value:Float):Float
|
|
{
|
|
if (height == value) return super.set_height(value);
|
|
|
|
isWaveformDirty = true;
|
|
return super.set_height(value);
|
|
}
|
|
|
|
/**
|
|
* Set the physical size of the waveform with `this.width = value`.
|
|
*/
|
|
override function set_width(value:Float):Float
|
|
{
|
|
if (width == value) return super.set_width(value);
|
|
|
|
isWaveformDirty = true;
|
|
return super.set_width(value);
|
|
}
|
|
|
|
/**
|
|
* The minimum size, in pixels, that a waveform will display with.
|
|
* Useful for preventing the waveform from becoming too small to see.
|
|
*
|
|
* NOTE: This is technically doubled since it's applied above and below the center of the waveform.
|
|
*/
|
|
public var minWaveformSize:Int = 1;
|
|
|
|
/**
|
|
* A multiplier on the size of the waveform.
|
|
* Still capped at the width and height set for the sprite.
|
|
*/
|
|
public var amplitude:Float = 1.0;
|
|
|
|
public function new(?waveformData:WaveformData, ?orientation:WaveformOrientation, ?color:FlxColor, ?duration:Float)
|
|
{
|
|
super(DEFAULT_X, DEFAULT_Y, DEFAULT_COLOR);
|
|
this.waveformColor = color ?? DEFAULT_COLOR;
|
|
this.width = DEFAULT_WIDTH;
|
|
this.height = DEFAULT_HEIGHT;
|
|
|
|
this.waveformData = waveformData;
|
|
this.orientation = orientation ?? DEFAULT_ORIENTATION;
|
|
this.time = 0.0;
|
|
this.duration = duration ?? DEFAULT_DURATION;
|
|
|
|
this.forceUpdate = false;
|
|
}
|
|
|
|
/**
|
|
* Manually tell the waveform to rebuild itself, even if none of its properties have changed.
|
|
*/
|
|
public function markDirty():Void
|
|
{
|
|
isWaveformDirty = true;
|
|
}
|
|
|
|
public override function update(elapsed:Float)
|
|
{
|
|
super.update(elapsed);
|
|
|
|
if (forceUpdate || isWaveformDirty)
|
|
{
|
|
// Recalculate the waveform vertices.
|
|
drawWaveform();
|
|
isWaveformDirty = false;
|
|
}
|
|
}
|
|
|
|
function rebuildGraphic():Void
|
|
{
|
|
// The waveform is rendered using a single colored pixel as a texture.
|
|
// If you want something more elaborate, make sure to modify `build_vertex` below to use the UVs you want.
|
|
makeGraphic(1, 1, this.waveformColor);
|
|
}
|
|
|
|
/**
|
|
* @param offsetX Horizontal offset to draw the waveform at, in samples.
|
|
*/
|
|
function drawWaveform():Void
|
|
{
|
|
// For each sample in the waveform...
|
|
// Add a MAX vertex and a MIN vertex.
|
|
// If previous MAX/MIN is empty, store.
|
|
// If previous MAX/MIN is not empty, draw a quad using current and previous MAX/MIN. Then store current MAX/MIN.
|
|
// Continue until end of waveform.
|
|
|
|
this.clear();
|
|
|
|
if (waveformData == null) return;
|
|
|
|
// Center point of the waveform. When horizontal this is half the height, when vertical this is half the width.
|
|
var waveformCenterPos:Int = orientation == HORIZONTAL ? Std.int(this.height / 2) : Std.int(this.width / 2);
|
|
|
|
var oneSecondInIndices:Int = waveformData.secondsToIndex(1);
|
|
|
|
var startTime:Float = time;
|
|
var endTime:Float = time + duration;
|
|
|
|
var startIndex:Int = waveformData.secondsToIndex(startTime);
|
|
var endIndex:Int = waveformData.secondsToIndex(endTime);
|
|
|
|
var pixelsPerIndex:Float = (orientation == HORIZONTAL ? this.width : this.height) / (endIndex - startIndex);
|
|
var indexesPerPixel:Float = 1 / pixelsPerIndex;
|
|
|
|
var topLeftVertexIndex:Int = -1;
|
|
var topRightVertexIndex:Int = -1;
|
|
var bottomLeftVertexIndex:Int = -1;
|
|
var bottomRightVertexIndex:Int = -1;
|
|
|
|
if (clipRect != null)
|
|
{
|
|
topLeftVertexIndex = this.build_vertex(clipRect.x, clipRect.y);
|
|
topRightVertexIndex = this.build_vertex(clipRect.x + clipRect.width, clipRect.y);
|
|
bottomLeftVertexIndex = this.build_vertex(clipRect.x, clipRect.y + clipRect.height);
|
|
bottomRightVertexIndex = this.build_vertex(clipRect.x + clipRect.width, clipRect.y + clipRect.height);
|
|
}
|
|
|
|
if (pixelsPerIndex >= 1.0)
|
|
{
|
|
// Each index is at least one pixel wide, so we render each index.
|
|
var prevVertexTopIndex:Int = -1;
|
|
var prevVertexBottomIndex:Int = -1;
|
|
for (i in startIndex...endIndex)
|
|
{
|
|
var pixelPos:Int = Std.int((i - startIndex) * pixelsPerIndex);
|
|
|
|
var isBeforeClipRect:Bool = (clipRect != null) && ((orientation == HORIZONTAL) ? pixelPos < clipRect.x : pixelPos < clipRect.y);
|
|
|
|
if (isBeforeClipRect) continue;
|
|
|
|
var isAfterClipRect:Bool = (clipRect != null)
|
|
&& ((orientation == HORIZONTAL) ? pixelPos > (clipRect.x + clipRect.width) : pixelPos > (clipRect.y + clipRect.height));
|
|
|
|
if (isAfterClipRect)
|
|
{
|
|
break;
|
|
};
|
|
|
|
var sampleMax:Float = Math.min(waveformData.channel(0).maxSampleMapped(i) * amplitude, 1.0);
|
|
var sampleMin:Float = Math.max(waveformData.channel(0).minSampleMapped(i) * amplitude, -1.0);
|
|
var sampleMaxSize:Float = sampleMax * (orientation == HORIZONTAL ? this.height : this.width) / 2;
|
|
if (sampleMaxSize < minWaveformSize) sampleMaxSize = minWaveformSize;
|
|
var sampleMinSize:Float = sampleMin * (orientation == HORIZONTAL ? this.height : this.width) / 2;
|
|
if (sampleMinSize > -minWaveformSize) sampleMinSize = -minWaveformSize;
|
|
var vertexTopY:Int = Std.int(waveformCenterPos - sampleMaxSize);
|
|
var vertexBottomY:Int = Std.int(waveformCenterPos - sampleMinSize);
|
|
|
|
if (vertexBottomY - vertexTopY < minWaveformSize) vertexTopY = vertexBottomY - minWaveformSize;
|
|
|
|
var vertexTopIndex:Int = -1;
|
|
var vertexBottomIndex:Int = -1;
|
|
|
|
if (clipRect != null)
|
|
{
|
|
if (orientation == HORIZONTAL)
|
|
{
|
|
vertexTopIndex = buildClippedVertex(pixelPos, vertexTopY, topLeftVertexIndex, topRightVertexIndex, bottomLeftVertexIndex, bottomRightVertexIndex);
|
|
vertexBottomIndex = buildClippedVertex(pixelPos, vertexBottomY, topLeftVertexIndex, topRightVertexIndex, bottomLeftVertexIndex,
|
|
bottomRightVertexIndex);
|
|
}
|
|
else
|
|
{
|
|
vertexTopIndex = buildClippedVertex(vertexTopY, pixelPos, topLeftVertexIndex, topRightVertexIndex, bottomLeftVertexIndex, bottomRightVertexIndex);
|
|
vertexBottomIndex = buildClippedVertex(vertexBottomY, pixelPos, topLeftVertexIndex, topRightVertexIndex, bottomLeftVertexIndex,
|
|
bottomRightVertexIndex);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (orientation == HORIZONTAL)
|
|
{
|
|
vertexTopIndex = this.build_vertex(pixelPos, vertexTopY);
|
|
vertexBottomIndex = this.build_vertex(pixelPos, vertexBottomY);
|
|
}
|
|
else
|
|
{
|
|
vertexTopIndex = this.build_vertex(vertexTopY, pixelPos);
|
|
vertexBottomIndex = this.build_vertex(vertexBottomY, pixelPos);
|
|
}
|
|
}
|
|
|
|
// Don't render if we don't have a previous different set of vertices to create a quad from.
|
|
if (prevVertexTopIndex != -1
|
|
&& prevVertexBottomIndex != -1
|
|
&& prevVertexTopIndex != vertexTopIndex
|
|
&& prevVertexBottomIndex != vertexBottomIndex)
|
|
{
|
|
switch (orientation) // the line of code that makes you gay
|
|
{
|
|
case HORIZONTAL:
|
|
this.add_quad(prevVertexTopIndex, vertexTopIndex, vertexBottomIndex, prevVertexBottomIndex);
|
|
case VERTICAL:
|
|
this.add_quad(prevVertexBottomIndex, prevVertexTopIndex, vertexTopIndex, vertexBottomIndex);
|
|
}
|
|
}
|
|
|
|
prevVertexTopIndex = vertexTopIndex;
|
|
prevVertexBottomIndex = vertexBottomIndex;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Indexes are less than one pixel wide, so for each pixel we render the maximum of the samples that fall within it.
|
|
var prevVertexTopIndex:Int = -1;
|
|
var prevVertexBottomIndex:Int = -1;
|
|
var waveformLengthPixels:Int = orientation == HORIZONTAL ? Std.int(this.width) : Std.int(this.height);
|
|
for (i in 0...waveformLengthPixels)
|
|
{
|
|
var pixelPos:Int = i;
|
|
|
|
var isBeforeClipRect:Bool = (clipRect != null) && ((orientation == HORIZONTAL) ? pixelPos < clipRect.x : pixelPos < clipRect.y);
|
|
|
|
if (isBeforeClipRect) continue;
|
|
|
|
var isAfterClipRect:Bool = (clipRect != null)
|
|
&& ((orientation == HORIZONTAL) ? pixelPos > (clipRect.x + clipRect.width) : pixelPos > (clipRect.y + clipRect.height));
|
|
|
|
if (isAfterClipRect)
|
|
{
|
|
break;
|
|
};
|
|
|
|
// Wrap Std.int around the whole range calculation, not just indexesPerPixel, otherwise you get weird issues with zooming.
|
|
var rangeStart:Int = Std.int(i * indexesPerPixel + startIndex);
|
|
var rangeEnd:Int = Std.int((i + 1) * indexesPerPixel + startIndex);
|
|
|
|
var sampleMax:Float = Math.min(waveformData.channel(0).maxSampleRangeMapped(rangeStart, rangeEnd) * amplitude, 1.0);
|
|
var sampleMin:Float = Math.max(waveformData.channel(0).minSampleRangeMapped(rangeStart, rangeEnd) * amplitude, -1.0);
|
|
var sampleMaxSize:Float = sampleMax * (orientation == HORIZONTAL ? this.height : this.width) / 2;
|
|
if (sampleMaxSize < minWaveformSize) sampleMaxSize = minWaveformSize;
|
|
var sampleMinSize:Float = sampleMin * (orientation == HORIZONTAL ? this.height : this.width) / 2;
|
|
if (sampleMinSize > -minWaveformSize) sampleMinSize = -minWaveformSize;
|
|
var vertexTopY:Int = Std.int(waveformCenterPos - sampleMaxSize);
|
|
var vertexBottomY:Int = Std.int(waveformCenterPos - sampleMinSize);
|
|
|
|
var vertexTopIndex:Int = -1;
|
|
var vertexBottomIndex:Int = -1;
|
|
|
|
if (clipRect != null)
|
|
{
|
|
if (orientation == HORIZONTAL)
|
|
{
|
|
vertexTopIndex = buildClippedVertex(pixelPos, vertexTopY, topLeftVertexIndex, topRightVertexIndex, bottomLeftVertexIndex, bottomRightVertexIndex);
|
|
vertexBottomIndex = buildClippedVertex(pixelPos, vertexBottomY, topLeftVertexIndex, topRightVertexIndex, bottomLeftVertexIndex,
|
|
bottomRightVertexIndex);
|
|
}
|
|
else
|
|
{
|
|
vertexTopIndex = buildClippedVertex(vertexTopY, pixelPos, topLeftVertexIndex, topRightVertexIndex, bottomLeftVertexIndex, bottomRightVertexIndex);
|
|
vertexBottomIndex = buildClippedVertex(vertexBottomY, pixelPos, topLeftVertexIndex, topRightVertexIndex, bottomLeftVertexIndex,
|
|
bottomRightVertexIndex);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (orientation == HORIZONTAL)
|
|
{
|
|
vertexTopIndex = this.build_vertex(pixelPos, vertexTopY);
|
|
vertexBottomIndex = this.build_vertex(pixelPos, vertexBottomY);
|
|
}
|
|
else
|
|
{
|
|
vertexTopIndex = this.build_vertex(vertexTopY, pixelPos);
|
|
vertexBottomIndex = this.build_vertex(vertexBottomY, pixelPos);
|
|
}
|
|
}
|
|
|
|
if (prevVertexTopIndex != -1 && prevVertexBottomIndex != -1)
|
|
{
|
|
switch (orientation)
|
|
{
|
|
case HORIZONTAL:
|
|
this.add_quad(prevVertexTopIndex, vertexTopIndex, vertexBottomIndex, prevVertexBottomIndex);
|
|
case VERTICAL:
|
|
this.add_quad(prevVertexBottomIndex, prevVertexTopIndex, vertexTopIndex, vertexBottomIndex);
|
|
}
|
|
}
|
|
prevVertexTopIndex = vertexTopIndex;
|
|
prevVertexBottomIndex = vertexBottomIndex;
|
|
}
|
|
}
|
|
}
|
|
|
|
function buildClippedVertex(x:Int, y:Int, topLeftVertexIndex:Int, topRightVertexIndex:Int, bottomLeftVertexIndex:Int, bottomRightVertexIndex:Int):Int
|
|
{
|
|
var shouldClipXLeft = x < clipRect.x;
|
|
var shouldClipXRight = x > (clipRect.x + clipRect.width);
|
|
var shouldClipYTop = y < clipRect.y;
|
|
var shouldClipYBottom = y > (clipRect.y + clipRect.height);
|
|
|
|
// If the vertex is fully outside the clipRect, use a pre-existing vertex.
|
|
// Else, if the vertex is outside the clipRect on one axis, create a new vertex constrained on that axis.
|
|
// Else, create a whole new vertex.
|
|
if (shouldClipXLeft && shouldClipYTop)
|
|
{
|
|
return topLeftVertexIndex;
|
|
}
|
|
else if (shouldClipXRight && shouldClipYTop)
|
|
{
|
|
return topRightVertexIndex;
|
|
}
|
|
else if (shouldClipXLeft && shouldClipYBottom)
|
|
{
|
|
return bottomLeftVertexIndex;
|
|
}
|
|
else if (shouldClipXRight && shouldClipYBottom)
|
|
{
|
|
return bottomRightVertexIndex;
|
|
}
|
|
else if (shouldClipXLeft)
|
|
{
|
|
return this.build_vertex(clipRect.x, y);
|
|
}
|
|
else if (shouldClipXRight)
|
|
{
|
|
return this.build_vertex(clipRect.x + clipRect.width, y);
|
|
}
|
|
else if (shouldClipYTop)
|
|
{
|
|
return this.build_vertex(x, clipRect.y);
|
|
}
|
|
else if (shouldClipYBottom)
|
|
{
|
|
return this.build_vertex(x, clipRect.y + clipRect.height);
|
|
}
|
|
else
|
|
{
|
|
return this.build_vertex(x, y);
|
|
}
|
|
}
|
|
|
|
public static function buildFromWaveformData(data:WaveformData, ?orientation:WaveformOrientation, ?color:FlxColor, ?duration:Float)
|
|
{
|
|
return new WaveformSprite(data, orientation, color, duration);
|
|
}
|
|
|
|
public static function buildFromFunkinSound(sound:FunkinSound, ?orientation:WaveformOrientation, ?color:FlxColor, ?duration:Float)
|
|
{
|
|
// TODO: Build waveform data from FunkinSound.
|
|
var data = null;
|
|
|
|
return buildFromWaveformData(data, orientation, color, duration);
|
|
}
|
|
}
|
|
|
|
enum WaveformOrientation
|
|
{
|
|
HORIZONTAL;
|
|
VERTICAL;
|
|
}
|