251 lines
7.6 KiB
Java
251 lines
7.6 KiB
Java
package androidx.constraintlayout.motion.utils;
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import com.google.android.material.shadow.ShadowDrawableWrapper;
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public class LinearCurveFit extends CurveFit {
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private static final String TAG = "LinearCurveFit";
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private double[] mT;
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private double mTotalLength = Double.NaN;
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private double[][] mY;
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public LinearCurveFit(double[] dArr, double[][] dArr2) {
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int length = dArr.length;
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int length2 = dArr2[0].length;
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this.mT = dArr;
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this.mY = dArr2;
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if (length2 > 2) {
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double d = 0.0d;
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double d2 = 0.0d;
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int i = 0;
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while (i < dArr.length) {
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double d3 = dArr2[i][0];
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double d4 = dArr2[i][0];
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if (i > 0) {
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Math.hypot(d3 - d, d4 - d2);
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}
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i++;
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d = d3;
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d2 = d4;
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}
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this.mTotalLength = ShadowDrawableWrapper.COS_45;
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}
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}
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private double getLength2D(double d) {
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if (Double.isNaN(this.mTotalLength)) {
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return ShadowDrawableWrapper.COS_45;
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}
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double[] dArr = this.mT;
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int length = dArr.length;
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if (d <= dArr[0]) {
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return ShadowDrawableWrapper.COS_45;
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}
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int i = length - 1;
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if (d >= dArr[i]) {
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return this.mTotalLength;
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}
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double d2 = 0.0d;
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double d3 = 0.0d;
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double d4 = 0.0d;
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int i2 = 0;
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while (i2 < i) {
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double[][] dArr2 = this.mY;
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double d5 = dArr2[i2][0];
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double d6 = dArr2[i2][1];
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if (i2 > 0) {
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d2 += Math.hypot(d5 - d3, d6 - d4);
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}
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double[] dArr3 = this.mT;
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if (d == dArr3[i2]) {
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return d2;
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}
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int i3 = i2 + 1;
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if (d < dArr3[i3]) {
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double d7 = (d - dArr3[i2]) / (dArr3[i3] - dArr3[i2]);
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double[][] dArr4 = this.mY;
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double d8 = dArr4[i2][0];
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double d9 = dArr4[i3][0];
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double d10 = 1.0d - d7;
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return Math.hypot(d6 - ((dArr4[i3][1] * d7) + (dArr4[i2][1] * d10)), d5 - ((d9 * d7) + (d8 * d10))) + d2;
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}
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i2 = i3;
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d3 = d5;
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d4 = d6;
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}
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return ShadowDrawableWrapper.COS_45;
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}
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@Override // androidx.constraintlayout.motion.utils.CurveFit
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public double getPos(double d, int i) {
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double[] dArr = this.mT;
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int length = dArr.length;
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int i2 = 0;
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if (d <= dArr[0]) {
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return this.mY[0][i];
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}
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int i3 = length - 1;
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if (d >= dArr[i3]) {
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return this.mY[i3][i];
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}
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while (i2 < i3) {
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double[] dArr2 = this.mT;
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if (d == dArr2[i2]) {
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return this.mY[i2][i];
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}
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int i4 = i2 + 1;
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if (d < dArr2[i4]) {
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double d2 = (d - dArr2[i2]) / (dArr2[i4] - dArr2[i2]);
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double[][] dArr3 = this.mY;
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return (dArr3[i4][i] * d2) + ((1.0d - d2) * dArr3[i2][i]);
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}
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i2 = i4;
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}
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return ShadowDrawableWrapper.COS_45;
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}
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@Override // androidx.constraintlayout.motion.utils.CurveFit
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public void getPos(double d, double[] dArr) {
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double[] dArr2 = this.mT;
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int length = dArr2.length;
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int i = 0;
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int length2 = this.mY[0].length;
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if (d <= dArr2[0]) {
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for (int i2 = 0; i2 < length2; i2++) {
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dArr[i2] = this.mY[0][i2];
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}
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return;
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}
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int i3 = length - 1;
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if (d >= dArr2[i3]) {
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while (i < length2) {
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dArr[i] = this.mY[i3][i];
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i++;
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}
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return;
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}
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int i4 = 0;
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while (i4 < i3) {
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if (d == this.mT[i4]) {
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for (int i5 = 0; i5 < length2; i5++) {
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dArr[i5] = this.mY[i4][i5];
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}
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}
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double[] dArr3 = this.mT;
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int i6 = i4 + 1;
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if (d < dArr3[i6]) {
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double d2 = (d - dArr3[i4]) / (dArr3[i6] - dArr3[i4]);
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while (i < length2) {
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double[][] dArr4 = this.mY;
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dArr[i] = (dArr4[i6][i] * d2) + ((1.0d - d2) * dArr4[i4][i]);
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i++;
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}
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return;
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}
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i4 = i6;
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}
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}
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@Override // androidx.constraintlayout.motion.utils.CurveFit
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public void getPos(double d, float[] fArr) {
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double[] dArr = this.mT;
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int length = dArr.length;
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int i = 0;
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int length2 = this.mY[0].length;
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if (d <= dArr[0]) {
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for (int i2 = 0; i2 < length2; i2++) {
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fArr[i2] = (float) this.mY[0][i2];
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}
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return;
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}
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int i3 = length - 1;
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if (d >= dArr[i3]) {
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while (i < length2) {
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fArr[i] = (float) this.mY[i3][i];
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i++;
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}
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return;
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}
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int i4 = 0;
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while (i4 < i3) {
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if (d == this.mT[i4]) {
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for (int i5 = 0; i5 < length2; i5++) {
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fArr[i5] = (float) this.mY[i4][i5];
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}
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}
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double[] dArr2 = this.mT;
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int i6 = i4 + 1;
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if (d < dArr2[i6]) {
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double d2 = (d - dArr2[i4]) / (dArr2[i6] - dArr2[i4]);
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while (i < length2) {
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double[][] dArr3 = this.mY;
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fArr[i] = (float) ((dArr3[i6][i] * d2) + ((1.0d - d2) * dArr3[i4][i]));
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i++;
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}
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return;
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}
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i4 = i6;
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}
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}
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@Override // androidx.constraintlayout.motion.utils.CurveFit
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public double getSlope(double d, int i) {
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double[] dArr = this.mT;
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int length = dArr.length;
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int i2 = 0;
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if (d < dArr[0]) {
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d = dArr[0];
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} else {
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int i3 = length - 1;
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if (d >= dArr[i3]) {
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d = dArr[i3];
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}
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}
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while (i2 < length - 1) {
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double[] dArr2 = this.mT;
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int i4 = i2 + 1;
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if (d <= dArr2[i4]) {
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double d2 = dArr2[i4] - dArr2[i2];
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double d3 = dArr2[i2];
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double[][] dArr3 = this.mY;
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return (dArr3[i4][i] - dArr3[i2][i]) / d2;
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}
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i2 = i4;
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}
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return ShadowDrawableWrapper.COS_45;
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}
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@Override // androidx.constraintlayout.motion.utils.CurveFit
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public void getSlope(double d, double[] dArr) {
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double[] dArr2 = this.mT;
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int length = dArr2.length;
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int length2 = this.mY[0].length;
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if (d <= dArr2[0]) {
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d = dArr2[0];
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} else {
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int i = length - 1;
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if (d >= dArr2[i]) {
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d = dArr2[i];
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}
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}
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int i2 = 0;
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while (i2 < length - 1) {
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double[] dArr3 = this.mT;
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int i3 = i2 + 1;
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if (d <= dArr3[i3]) {
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double d2 = dArr3[i3] - dArr3[i2];
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double d3 = dArr3[i2];
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for (int i4 = 0; i4 < length2; i4++) {
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double[][] dArr4 = this.mY;
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dArr[i4] = (dArr4[i3][i4] - dArr4[i2][i4]) / d2;
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}
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return;
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}
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i2 = i3;
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}
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}
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@Override // androidx.constraintlayout.motion.utils.CurveFit
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public double[] getTimePoints() {
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return this.mT;
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}
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}
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