动态实现3D标签，
主要代码：
//
// XLMatrix.h
// XLSphereView
//
// Created by 史晶晶 on 16/4/4.
// Copyright © 2016年 xiaolong. All rights reserved.
//
#ifndef XLMatrix_h
#define XLMatrix_h
#import "XLPoint.h"
struct XLMatrix {
NSInteger column;
NSInteger row;
CGFloat matrix[4][4];
};
typedef struct XLMatrix XLMatrix;
static XLMatrix XLMatrixMake(NSInteger column, NSInteger row) {
XLMatrix matrix;
matrix.column = column;
matrix.row = row;
for(NSInteger i = 0; i < column; i++){
for(NSInteger j = 0; j < row; j++){
matrix.matrix[i][j] = 0;
}
}
return matrix;
}
static XLMatrix XLMatrixMakeFromArray(NSInteger column, NSInteger row, CGFloat *data) {
XLMatrix matrix = XLMatrixMake(column, row);
for (int i = 0; i < column; i ++) {
CGFloat *t = data + (i * row);
for (int j = 0; j < row; j++) {
matrix.matrix[i][j] = *(t + j);
}
}
return matrix;
}
static XLMatrix XLMatrixMutiply(XLMatrix a, XLMatrix b) {
XLMatrix result = XLMatrixMake(a.column, b.row);
for(NSInteger i = 0; i < a.column; i ++){
for(NSInteger j = 0; j < b.row; j ++){
for(NSInteger k = 0; k < a.row; k++){
result.matrix[i][j] += a.matrix[i][k] * b.matrix[k][j];
}
}
}
return result;
}
static XLPoint XLPointMakeRotation(XLPoint point, XLPoint direction, CGFloat angle) {
// CGFloat temp1[4] = {direction.x, direction.y, direction.z, 1};
// XLMatrix directionM = XLMatrixMakeFromArray(1, 4, temp1);
if (angle == 0) {
return point;
}
CGFloat temp2[1][4] = {point.x, point.y, point.z, 1};
// XLMatrix pointM = XLMatrixMakeFromArray(1, 4, *temp2);
XLMatrix result = XLMatrixMakeFromArray(1, 4, *temp2);
if (direction.z * direction.z + direction.y * direction.y != 0) {
CGFloat cos1 = direction.z / sqrt(direction.z * direction.z + direction.y * direction.y);
CGFloat sin1 = direction.y / sqrt(direction.z * direction.z + direction.y * direction.y);
CGFloat t1[4][4] = {{1, 0, 0, 0}, {0, cos1, sin1, 0}, {0, -sin1, cos1, 0}, {0, 0, 0, 1}};
XLMatrix m1 = XLMatrixMakeFromArray(4, 4, *t1);
result = XLMatrixMutiply(result, m1);
}
if (direction.x * direction.x + direction.y * direction.y + direction.z * direction.z != 0) {
CGFloat cos2 = sqrt(direction.y * direction.y + direction.z * direction.z) / sqrt(direction.x * direction.x + direction.y * direction.y + direction.z * direction.z);
CGFloat sin2 = -direction.x / sqrt(direction.x * direction.x + direction.y * direction.y + direction.z * direction.z);
CGFloat t2[4][4] = {{cos2, 0, -sin2, 0}, {0, 1, 0, 0}, {sin2, 0, cos2, 0}, {0, 0, 0, 1}};
XLMatrix m2 = XLMatrixMakeFromArray(4, 4, *t2);
result = XLMatrixMutiply(result, m2);
}
CGFloat cos3 = cos(angle);
CGFloat sin3 = sin(angle);
CGFloat t3[4][4] = {{cos3, sin3, 0, 0}, {-sin3, cos3, 0, 0}, {0, 0, 1, 0}, {0, 0, 0, 1}};
XLMatrix m3 = XLMatrixMakeFromArray(4, 4, *t3);
result = XLMatrixMutiply(result, m3);
if (direction.x * direction.x + direction.y * direction.y + direction.z * direction.z != 0) {
CGFloat cos2 = sqrt(direction.y * direction.y + direction.z * direction.z) / sqrt(direction.x * direction.x + direction.y * direction.y + direction.z * direction.z);
CGFloat sin2 = -direction.x / sqrt(direction.x * direction.x + direction.y * direction.y + direction.z * direction.z);
CGFloat t2_[4][4] = {{cos2, 0, sin2, 0}, {0, 1, 0, 0}, {-sin2, 0, cos2, 0}, {0, 0, 0, 1}};
XLMatrix m2_ = XLMatrixMakeFromArray(4, 4, *t2_);
result = XLMatrixMutiply(result, m2_);
}
if (direction.z * direction.z + direction.y * direction.y != 0) {
CGFloat cos1 = direction.z / sqrt(direction.z * direction.z + direction.y * direction.y);
CGFloat sin1 = direction.y / sqrt(direction.z * direction.z + direction.y * direction.y);
CGFloat t1_[4][4] = {{1, 0, 0, 0}, {0, cos1, -sin1, 0}, {0, sin1, cos1, 0}, {0, 0, 0, 1}};
XLMatrix m1_ = XLMatrixMakeFromArray(4, 4, *t1_);
result = XLMatrixMutiply(result, m1_);
}
XLPoint resultPoint = XLPointMake(result.matrix[0][0], result.matrix[0][1], result.matrix[0][2]);
return resultPoint;
}
#endif /* XLMatrix_h */
1 //
2 // ViewController.m
3 // XLSphereView
4 //
5 // Created by 史晶晶 on 16/4/4.
6 // Copyright © 2016年 xiaolong. All rights reserved.
7 //
8
9 #import "ViewController.h"
10 #import "XLSphereView.h"
11
12 @interface ViewController ()
13
14 @property (nonatomic,strong) XLSphereView *sphereView;
15
16 @end
17
18 @implementation ViewController
19
20 - (void)viewDidLoad {
21 [super viewDidLoad];
22
23 self.view.backgroundColor = [UIColor blackColor];
24 CGFloat sphereViewW = self.view.frame.size.width - 30 * 2;
25 CGFloat sphereViewH = sphereViewW;
26 _sphereView = [[XLSphereView alloc] initWithFrame:CGRectMake(30, 100, sphereViewW, sphereViewH)];
27 NSMutableArray *array = [[NSMutableArray alloc] initWithCapacity:0];
28 for (NSInteger i = 0; i < 40; i ++) {
29 UIButton *btn = [UIButton buttonWithType:UIButtonTypeSystem];
30 [btn setTitle:[NSString stringWithFormat:@"晶%ld", i] forState:UIControlStateNormal];
31 btn.titleLabel.font = [UIFont systemFontOfSize: 7.0];
32 btn.backgroundColor = [UIColor colorWithRed:arc4random_uniform(255)/255. green:arc4random_uniform(255)/255. blue:arc4random_uniform(255)/255. alpha:1.];
33 [btn setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
34 btn.titleLabel.font = [UIFont systemFontOfSize:24.];
35 btn.frame = CGRectMake(0, 0, 60, 30);
36 btn.layer.cornerRadius = 3;
37 btn.clipsToBounds = YES;
38 [btn addTarget:self action:@selector(buttonPressed:) forControlEvents:UIControlEventTouchUpInside];
39 [array addObject:btn];
40 [_sphereView addSubview:btn];
41 }
42 [_sphereView setItems:array];
43 [self.view addSubview:_sphereView];
44
45 }
46
47 - (void)buttonPressed:(UIButton *)btn
48 {
49 [_sphereView timerStop];
50
51 [UIView animateWithDuration:0.3 animations:^{
52 btn.transform = CGAffineTransformMakeScale(2., 2.);
53 } completion:^(BOOL finished) {
54 [UIView animateWithDuration:0.3 animations:^{
55 btn.transform = CGAffineTransformMakeScale(1., 1.);
56 } completion:^(BOOL finished) {
57 [_sphereView timerStart];
58 }];
59 }];
60 }
61
62 - (void)didReceiveMemoryWarning {
63 [super didReceiveMemoryWarning];
64 // Dispose of any resources that can be recreated.
65 }
66
67 @end
demo截图
下载地址：
https://github.com/henusjj/Label-effect
时间： 2024-08-06 19:29:22