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| 1 | +import * as d3 from 'd3'; |
| 2 | +import type { AnimationState } from '../../types'; |
| 3 | + |
| 4 | +export interface AnimationConfig { |
| 5 | + duration: number; |
| 6 | + easing: (t: number) => number; |
| 7 | +} |
| 8 | + |
| 9 | +const DEFAULT_CONFIG: AnimationConfig = { |
| 10 | + duration: 300, |
| 11 | + easing: d3.easeCubicOut, |
| 12 | +}; |
| 13 | + |
| 14 | +/** |
| 15 | + * 动画控制器 - 管理栈可视化的动画效果 |
| 16 | + */ |
| 17 | +export class AnimationController { |
| 18 | + private config: AnimationConfig; |
| 19 | + private activeAnimations: Map<string, d3.Selection<SVGElement, unknown, null, undefined>> = new Map(); |
| 20 | + |
| 21 | + constructor(config: Partial<AnimationConfig> = {}) { |
| 22 | + this.config = { ...DEFAULT_CONFIG, ...config }; |
| 23 | + } |
| 24 | + |
| 25 | + /** |
| 26 | + * 执行入栈动画 |
| 27 | + */ |
| 28 | + animatePush( |
| 29 | + element: SVGGElement, |
| 30 | + targetY: number, |
| 31 | + onComplete?: () => void |
| 32 | + ): void { |
| 33 | + const selection = d3.select(element); |
| 34 | + |
| 35 | + // 从上方滑入 |
| 36 | + selection |
| 37 | + .attr('opacity', 0) |
| 38 | + .attr('transform', `translate(0, ${targetY - 60})`) |
| 39 | + .transition() |
| 40 | + .duration(this.config.duration) |
| 41 | + .ease(this.config.easing) |
| 42 | + .attr('opacity', 1) |
| 43 | + .attr('transform', `translate(0, ${targetY})`) |
| 44 | + .on('end', () => onComplete?.()); |
| 45 | + } |
| 46 | + |
| 47 | + /** |
| 48 | + * 执行出栈动画 |
| 49 | + */ |
| 50 | + animatePop( |
| 51 | + element: SVGGElement, |
| 52 | + onComplete?: () => void |
| 53 | + ): void { |
| 54 | + const selection = d3.select(element); |
| 55 | + const currentTransform = selection.attr('transform'); |
| 56 | + const match = currentTransform?.match(/translate\(([^,]+),\s*([^)]+)\)/); |
| 57 | + const currentY = match ? parseFloat(match[2]) : 0; |
| 58 | + |
| 59 | + selection |
| 60 | + .transition() |
| 61 | + .duration(this.config.duration) |
| 62 | + .ease(this.config.easing) |
| 63 | + .attr('opacity', 0) |
| 64 | + .attr('transform', `translate(0, ${currentY - 60})`) |
| 65 | + .on('end', () => onComplete?.()); |
| 66 | + } |
| 67 | + |
| 68 | + /** |
| 69 | + * 执行高亮动画 |
| 70 | + */ |
| 71 | + animateHighlight( |
| 72 | + element: SVGGElement, |
| 73 | + color: string, |
| 74 | + onComplete?: () => void |
| 75 | + ): void { |
| 76 | + const selection = d3.select(element); |
| 77 | + const rect = selection.select('rect'); |
| 78 | + |
| 79 | + // 脉冲效果 |
| 80 | + rect |
| 81 | + .transition() |
| 82 | + .duration(150) |
| 83 | + .attr('stroke-width', 4) |
| 84 | + .attr('stroke', color) |
| 85 | + .transition() |
| 86 | + .duration(150) |
| 87 | + .attr('stroke-width', 2) |
| 88 | + .transition() |
| 89 | + .duration(150) |
| 90 | + .attr('stroke-width', 4) |
| 91 | + .transition() |
| 92 | + .duration(150) |
| 93 | + .attr('stroke-width', 2) |
| 94 | + .on('end', () => onComplete?.()); |
| 95 | + } |
| 96 | + |
| 97 | + /** |
| 98 | + * 执行比较动画 - 显示两个元素之间的比较 |
| 99 | + */ |
| 100 | + animateCompare( |
| 101 | + element1: SVGGElement, |
| 102 | + element2: SVGGElement, |
| 103 | + onComplete?: () => void |
| 104 | + ): void { |
| 105 | + const sel1 = d3.select(element1); |
| 106 | + const sel2 = d3.select(element2); |
| 107 | + |
| 108 | + // 同时高亮两个元素 |
| 109 | + [sel1, sel2].forEach((sel) => { |
| 110 | + sel.select('rect') |
| 111 | + .transition() |
| 112 | + .duration(200) |
| 113 | + .attr('stroke', '#f0883e') |
| 114 | + .attr('stroke-width', 3) |
| 115 | + .transition() |
| 116 | + .duration(200) |
| 117 | + .attr('stroke-width', 2); |
| 118 | + }); |
| 119 | + |
| 120 | + setTimeout(() => onComplete?.(), 400); |
| 121 | + } |
| 122 | + |
| 123 | + /** |
| 124 | + * 执行数据流动画 - 显示值从一个位置流向另一个位置 |
| 125 | + */ |
| 126 | + animateDataFlow( |
| 127 | + svg: SVGSVGElement, |
| 128 | + fromX: number, |
| 129 | + fromY: number, |
| 130 | + toX: number, |
| 131 | + toY: number, |
| 132 | + value: string, |
| 133 | + onComplete?: () => void |
| 134 | + ): void { |
| 135 | + const group = d3.select(svg).append('g').attr('class', 'data-flow-animation'); |
| 136 | + |
| 137 | + // 创建流动的圆点 |
| 138 | + const circle = group.append('circle') |
| 139 | + .attr('cx', fromX) |
| 140 | + .attr('cy', fromY) |
| 141 | + .attr('r', 15) |
| 142 | + .attr('fill', '#7ee787') |
| 143 | + .attr('opacity', 0.9); |
| 144 | + |
| 145 | + // 创建值文本 |
| 146 | + const text = group.append('text') |
| 147 | + .attr('x', fromX) |
| 148 | + .attr('y', fromY) |
| 149 | + .attr('text-anchor', 'middle') |
| 150 | + .attr('dominant-baseline', 'central') |
| 151 | + .attr('fill', '#0d1117') |
| 152 | + .attr('font-size', 12) |
| 153 | + .attr('font-weight', 600) |
| 154 | + .text(value); |
| 155 | + |
| 156 | + // 动画移动 |
| 157 | + circle.transition() |
| 158 | + .duration(this.config.duration * 1.5) |
| 159 | + .ease(d3.easeCubicInOut) |
| 160 | + .attr('cx', toX) |
| 161 | + .attr('cy', toY); |
| 162 | + |
| 163 | + text.transition() |
| 164 | + .duration(this.config.duration * 1.5) |
| 165 | + .ease(d3.easeCubicInOut) |
| 166 | + .attr('x', toX) |
| 167 | + .attr('y', toY) |
| 168 | + .on('end', () => { |
| 169 | + group.remove(); |
| 170 | + onComplete?.(); |
| 171 | + }); |
| 172 | + } |
| 173 | + |
| 174 | + /** |
| 175 | + * 停止所有动画 |
| 176 | + */ |
| 177 | + stopAll(): void { |
| 178 | + this.activeAnimations.forEach((selection) => { |
| 179 | + selection.interrupt(); |
| 180 | + }); |
| 181 | + this.activeAnimations.clear(); |
| 182 | + } |
| 183 | + |
| 184 | + /** |
| 185 | + * 设置动画配置 |
| 186 | + */ |
| 187 | + setConfig(config: Partial<AnimationConfig>): void { |
| 188 | + this.config = { ...this.config, ...config }; |
| 189 | + } |
| 190 | + |
| 191 | + /** |
| 192 | + * 根据动画状态执行相应动画 |
| 193 | + */ |
| 194 | + executeAnimation( |
| 195 | + animationState: AnimationState, |
| 196 | + elements: { |
| 197 | + mainStackElements: SVGGElement[]; |
| 198 | + minStackElements: SVGGElement[]; |
| 199 | + svg: SVGSVGElement; |
| 200 | + }, |
| 201 | + onComplete?: () => void |
| 202 | + ): void { |
| 203 | + const { mainStackElements, minStackElements } = elements; |
| 204 | + |
| 205 | + switch (animationState.type) { |
| 206 | + case 'push': |
| 207 | + if (animationState.targetStack === 'main' && mainStackElements.length > 0) { |
| 208 | + const lastElement = mainStackElements[mainStackElements.length - 1]; |
| 209 | + this.animatePush(lastElement, 0, onComplete); |
| 210 | + } |
| 211 | + break; |
| 212 | + |
| 213 | + case 'pop': |
| 214 | + if (animationState.targetStack === 'main' && mainStackElements.length > 0) { |
| 215 | + const lastElement = mainStackElements[mainStackElements.length - 1]; |
| 216 | + this.animatePop(lastElement, onComplete); |
| 217 | + } |
| 218 | + break; |
| 219 | + |
| 220 | + case 'highlight-top': |
| 221 | + if (mainStackElements.length > 0) { |
| 222 | + const topElement = mainStackElements[mainStackElements.length - 1]; |
| 223 | + this.animateHighlight(topElement, '#f0883e', onComplete); |
| 224 | + } |
| 225 | + break; |
| 226 | + |
| 227 | + case 'highlight-min': |
| 228 | + if (minStackElements.length > 0) { |
| 229 | + const topElement = minStackElements[minStackElements.length - 1]; |
| 230 | + this.animateHighlight(topElement, '#f0883e', onComplete); |
| 231 | + } |
| 232 | + break; |
| 233 | + |
| 234 | + case 'compare': |
| 235 | + if (mainStackElements.length > 0 && minStackElements.length > 0) { |
| 236 | + const mainTop = mainStackElements[mainStackElements.length - 1]; |
| 237 | + const minTop = minStackElements[minStackElements.length - 1]; |
| 238 | + this.animateCompare(mainTop, minTop, onComplete); |
| 239 | + } |
| 240 | + break; |
| 241 | + |
| 242 | + default: |
| 243 | + onComplete?.(); |
| 244 | + } |
| 245 | + } |
| 246 | +} |
| 247 | + |
| 248 | +// 导出单例实例 |
| 249 | +export const animationController = new AnimationController(); |
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