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132 lines
4.7 KiB
132 lines
4.7 KiB
import QtQuick 2.12 |
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import QtQuick.Controls 2.12 |
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import "../../qml/api" |
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StyleAPI { |
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readonly property var audioData: new Array(128) |
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//configs |
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readonly property string color: configs["Main Color"] |
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readonly property int linePosition: configs["Line Position"] |
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readonly property real lineWidth: configs["Line Width"] |
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readonly property real maxRange: configs["Max Range"] / 100 |
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readonly property int uDataLen: Math.pow(2, configs["Data Length"]) |
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readonly property int dataLength: 64/uDataLen |
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readonly property int channel: configs["Channel"] |
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readonly property bool reverse: configs["Reverse"] |
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readonly property bool rotateFlag: configs["Rotate"] |
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readonly property real rSpeed: configs["Ratate Speed"] / 100 |
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readonly property real angle: configs["Angle"] |
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readonly property bool autoNormalizing: configs["Data Settings"]["Auto Normalizing"] |
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readonly property real amplitude: configs["Data Settings"]["Amplitude"] / 400 |
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readonly property int unitStyle: configs["Data Settings"]["Unit Style"] |
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readonly property int total: channel*dataLength |
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readonly property real dotGap: 360/total |
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property real offsetAngle: 0 |
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property var outerPos: [] |
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property var innerPos: [] |
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readonly property real degUnit: Math.PI/180 |
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readonly property real subRatio: 0.2*maxRange |
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readonly property real mainRatio: 1-subRatio*2.5 |
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readonly property real minLength: Math.min(width, height) |
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readonly property real ratio:minLength*subRatio |
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readonly property real halfWidth: width/2 |
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readonly property real halfHeight: height/2 |
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readonly property real halfMinLength: minLength/2 |
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readonly property real logAmplitude: Math.log10(amplitude) |
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onConfigsUpdated: { |
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context.lineWidth = lineWidth; |
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context.strokeStyle = color; |
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} |
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function getPos(r, deg) { |
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return [halfWidth+Math.cos(deg)*r,halfHeight+Math.sin(deg)*r]; |
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} |
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function createPoint() { |
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outerPos = []; |
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innerPos = []; |
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let deg, deltaR, r1, r2, _rhmLen; |
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_rhmLen = mainRatio*halfMinLength; |
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for (let j=0; j < channel; j++) { |
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for (let i=0; i < dataLength; i++) { |
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deg = degUnit*((i+j*dataLength)*dotGap + offsetAngle); |
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deltaR = audioData[reverse*(dataLength-i-1)+(!reverse)*(i+j*dataLength)] * ratio; |
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r1 = _rhmLen+1+deltaR*(linePosition!==2); |
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r2 = _rhmLen-1-deltaR*(linePosition!==1); |
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outerPos.push(getPos(r1, deg)); |
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innerPos.push(getPos(r2, deg)); |
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} |
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} |
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offsetAngle = rotateFlag ? ((offsetAngle + rSpeed) % 360) : angle; |
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} |
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onAudioDataUpdeted: { |
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if(autoNormalizing) { |
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if (unitStyle) { |
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//对数化显示 |
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let logPeak = Math.log10(data[128]); |
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for(let i=0; i<total; i++) { |
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audioData[i] = 0; |
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for(let j=0; j<uDataLen; j++) { |
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audioData[i] += Math.max(0, 0.4 * (Math.log10(data[i*uDataLen+j])-logPeak) + 1.0); |
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} |
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audioData[i] /= uDataLen; |
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} |
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} else { |
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//线性化显示 |
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for(let i=0; i<total; i++) { |
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audioData[i] = 0; |
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for(let j=0; j<uDataLen; j++) { |
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audioData[i] += data[i*uDataLen+j] / data[128]; |
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} |
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audioData[i] /= uDataLen; |
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} |
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} |
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} else { |
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if (unitStyle) { |
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//对数化显示 |
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for(let i=0; i<total; i++) { |
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audioData[i] = 0; |
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for(let j=0; j<uDataLen; j++) { |
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audioData[i] += Math.max(0, 0.35 * (Math.log10(data[i*uDataLen+j])+logAmplitude) + 1.0); |
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} |
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audioData[i] /= uDataLen; |
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} |
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} else { |
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//线性化显示 |
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for(let i=0; i<total; i++) { |
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audioData[i] = 0; |
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for(let j=0; j<uDataLen; j++) { |
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audioData[i] += data[i*uDataLen+j] * amplitude; |
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} |
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audioData[i] /= uDataLen; |
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} |
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} |
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} |
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context.clearRect(0, 0, width, height); |
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createPoint(); |
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context.beginPath(); |
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for(let i=0; i<total; i++) { |
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context.moveTo(outerPos[i][0], outerPos[i][1]); |
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context.lineTo(innerPos[i][0], innerPos[i][1]); |
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} |
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context.stroke(); |
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requestPaint(); |
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} |
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Component.onCompleted: { |
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for (let i = 0; i < 128; i++) { |
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audioData[i] = 0; |
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} |
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} |
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}
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