iOS 根据声波 曲线动画

//This file is part of SphereView. // //SphereView is free software: you can redistribute it and/or modify //it under the terms of the GNU General Public License as published by //the Free Software Foundation, either version 3 of the License, or //(at your option) any later version. // //SphereView is distributed in the hope that it will be useful, //but WITHOUT ANY WARRANTY; without even the implied warranty of //MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //GNU General Public License for more details. // //You should have received a copy of the GNU General Public License //along with SphereView. If not, see <http://www.gnu.org/licenses/>. static PFMatrix PFMatrixTransform3DMakeFromPFPoint(PFPoint point) { CGFloat pointRef[1][4] = {{point.x, point.y, point.z, 1}}; PFMatrix matrix = PFMatrixMakeFromArray(1, 4, *pointRef); return matrix; } static PFMatrix PFMatrixTransform3DMakeTranslation(PFPoint point) { CGFloat T[4][4] = { {1, 0, 0, 0}, {0, 1, 0, 0}, {0, 0, 1, 0}, {point.x, point.y, point.z, 1} }; PFMatrix matrix = PFMatrixMakeFromArray(4, 4, *T); return matrix; } static PFMatrix PFMatrixTransform3DMakeXRotation(PFRadian angle) { CGFloat c = cos(PFRadianMake(angle)); CGFloat s = sin(PFRadianMake(angle)); CGFloat T[4][4] = { {1, 0, 0, 0}, {0, c, s, 0}, {0, -s, c, 0}, {0, 0, 0, 1} }; PFMatrix matrix = PFMatrixMakeFromArray(4, 4, *T); return matrix; } static PFMatrix PFMatrixTransform3DMakeXRotationOnPoint(PFPoint point, PFRadian angle) { PFMatrix T = PFMatrixTransform3DMakeTranslation(PFPointMake(-point.x, -point.y, -point.z)); PFMatrix R = PFMatrixTransform3DMakeXRotation(angle); PFMatrix T1 = PFMatrixTransform3DMakeTranslation(point); return PFMatrixMultiply(PFMatrixMultiply(T, R), T1); } static PFMatrix PFMatrixTransform3DMakeYRotation(PFRadian angle) { CGFloat c = cos(PFRadianMake(angle)); CGFloat s = sin(PFRadianMake(angle)); CGFloat T[4][4] = { {c, 0, -s, 0}, {0, 1, 0, 0}, {s, 0, c, 0}, {0, 0, 0, 1} }; PFMatrix matrix = PFMatrixMakeFromArray(4, 4, *T); return matrix; } static PFMatrix PFMatrixTransform3DMakeYRotationOnPoint(PFPoint point, PFRadian angle) { PFMatrix T = PFMatrixTransform3DMakeTranslation(PFPointMake(-point.x, -point.y, -point.z)); PFMatrix R = PFMatrixTransform3DMakeYRotation(angle); PFMatrix T1 = PFMatrixTransform3DMakeTranslation(point); return PFMatrixMultiply(PFMatrixMultiply(T, R), T1); } static PFMatrix PFMatrixTransform3DMakeZRotation(PFRadian angle) { CGFloat c = cos(PFRadianMake(angle)); CGFloat s = sin(PFRadianMake(angle)); CGFloat T[4][4] = { {c, s, 0, 0}, {-s, c, 0, 0}, {0, 0, 1, 0}, {0, 0, 0, 1} }; PFMatrix matrix = PFMatrixMakeFromArray(4, 4, *T); return matrix; } static PFMatrix PFMatrixTransform3DMakeZRotationOnPoint(PFPoint point, PFRadian angle) { PFMatrix T = PFMatrixTransform3DMakeTranslation(PFPointMake(-point.x, -point.y, -point.z)); PFMatrix R = PFMatrixTransform3DMakeZRotation(angle); PFMatrix T1 = PFMatrixTransform3DMakeTranslation(point); return PFMatrixMultiply(PFMatrixMultiply(T, R), T1); }