wasm凸包测试
This commit is contained in:
kura
parent
e811c04eeb
commit
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@ -1,42 +1,76 @@
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#include <stdlib.h>
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#include <stdlib.h>
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// 定义一个点结构体
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// 定义点结构
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typedef struct {
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typedef struct {
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int x, y;
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int x;
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int y;
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} Point;
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} Point;
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// 计算两点的极角
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// 计算叉积
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int orientation(Point p, Point q, Point r) {
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double crossProduct(Point p0, Point p1, Point p2) {
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int val = (q.y - p.y) * (r.x - q.x) - (q.x - p.x) * (r.y - q.y);
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return (p1.x - p0.x) * (p2.y - p0.y) - (p2.x - p0.x) * (p1.y - p0.y);
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if (val == 0) return 0; // 共线
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return (val > 0) ? 1 : 2; // 顺时针或逆时针
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}
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}
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// 对点的极角排序
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// 计算两点间距离的平方
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int compare(const void *vp1, const void *vp2) {
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double distanceSquare(Point p1, Point p2) {
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Point *p1 = (Point *)vp1;
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return (p1.x - p2.x) * (p1.x - p2.x) + (p1.y - p2.y) * (p1.y - p2.y);
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Point *p2 = (Point *)vp2;
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return (p1->y < p2->y) || (p1->y == p2->y && p1->x < p2->x);
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}
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}
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// 凸包主函数
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// 比较函数
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void convexHull(Point points[], int n, Point result[], int *result_size) {
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Point p0;
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// 如果点数小于 3，无法构成凸包
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int comparePoints(const void* vp1, const void* vp2) {
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Point* p1 = (Point*)vp1;
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Point* p2 = (Point*)vp2;
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double cross = crossProduct(p0, *p1, *p2);
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if (cross == 0) {
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return (distanceSquare(p0, *p1) - distanceSquare(p0, *p2));
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}
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return (cross < 0) ? 1 : -1;
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}
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// 导出的凸包计算函数
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void convexHull(Point* points, int n, Point* result, int* resultSize) {
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if (n < 3) {
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if (n < 3) {
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*result_size = 0;
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// 点数小于3，直接复制所有点
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for (int i = 0; i < n; i++) {
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result[i] = points[i];
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}
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*resultSize = n;
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return;
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return;
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}
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}
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// 按 y 坐标排序，如果 y 坐标相同则按 x 坐标排序
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// 找到y坐标最小的点
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qsort(points, n, sizeof(Point), compare);
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int min = 0;
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for (int i = 1; i < n; i++) {
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if (points[i].y < points[min].y ||
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(points[i].y == points[min].y && points[i].x < points[min].x)) {
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min = i;
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}
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}
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// 将最下方的点交换到points[0]
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Point temp = points[0];
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points[0] = points[min];
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points[min] = temp;
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// 保存最下方的点用于排序
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p0 = points[0];
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// 按极角排序
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qsort(&points[1], n-1, sizeof(Point), comparePoints);
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// 构建凸包
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// 构建凸包
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int m = 0; // 凸包的点数
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int m = 0;
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for (int i = 0; i < n; i++) {
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result[m++] = points[0];
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while (m >= 2 && orientation(result[m-2], result[m-1], points[i]) != 2)
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result[m++] = points[1];
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result[m++] = points[2];
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for (int i = 3; i < n; i++) {
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while (m > 1 && crossProduct(result[m-2], result[m-1], points[i]) <= 0) {
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m--;
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m--;
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}
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result[m++] = points[i];
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result[m++] = points[i];
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}
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}
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*result_size = m;
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*resultSize = m;
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}
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}
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227
convex_hull.html
Normal file
227
convex_hull.html
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>凸包算法</title>
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</head>
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<body>
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<textarea style="width: 100%;height: 100px;" id="points" placeholder="输入点，格式：x1,y1;x2,y2;x3,y3;..."></textarea>
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<button onclick="convex_hull()">计算凸包</button>
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<button onclick="randomPointsToTextarea(30)">随机30点</button>
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<button onclick="randomPointsToTextarea(3000)">随机3000点</button>
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<button onclick="randomPointsToTextarea(10000)">随机10000点</button>
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<button onclick="randomPointsToTextarea(30000)">随机30000点</button>
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<div id="result"></div>
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<canvas id="canvas" width="800" height="800"></canvas>
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</body>
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<script src="./convex_hull.js"></script>
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<script>
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function callWasmConvexHull(points) {
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//长度
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var n = points.length;
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var pointsPtr = Module._malloc(n * 8); //8字节一个点
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for (let i = 0; i < n; i++) {
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Module.setValue(pointsPtr + i * 8, points[i].x, 'i32');
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Module.setValue(pointsPtr + i * 8 + 4, points[i].y, 'i32');
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}
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//多少点
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var resultPtr = Module._malloc(n * 8);
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var resultSizePtr = Module._malloc(4);
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console.time('wasm耗时')
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Module._convexHull(pointsPtr, n, resultPtr, resultSizePtr);
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console.timeEnd('wasm耗时')
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var resultSize = Module.getValue(resultSizePtr, 'i32');
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var resultPoints = [];
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//读
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for (let i = 0; i < resultSize; i++) {
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var x = Module.getValue(resultPtr + i * 8, 'i32');
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var y = Module.getValue(resultPtr + i * 8 + 4, 'i32');
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resultPoints.push({ x: x, y: y });
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}
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// 释放
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Module._free(pointsPtr);
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Module._free(resultPtr);
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Module._free(resultSizePtr);
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return resultPoints
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}
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function randomPointsToTextarea(n) {
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var points = Array.from({ length: n }, () => ({
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x: Math.floor(Math.random() * 100),
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y: Math.floor(Math.random() * 100)
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}));
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document.getElementById('points').value = points.map(p => `${p.x},${p.y}`).join(';');
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draw(points)
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}
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//计算凸包
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function convex_hull(points) {
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var points = document.getElementById('points').value.split(';').map(item => {
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var [x, y] = item.split(',');
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return { x: parseInt(x), y: parseInt(y) };
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});
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console.log('--------------------------------')
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//wasm整体调用计时
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console.time('wasm整体耗时,包含指针传递')
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var resultPoints = callWasmConvexHull(points)
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console.timeEnd('wasm整体耗时,包含指针传递')
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document.getElementById('result').innerHTML = JSON.stringify(resultPoints)
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drawConvexHull(resultPoints)
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//js实现凸包
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console.time('js调用')
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var resultPoints = jsConvexHull(points)
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console.timeEnd('js调用')
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drawConvexHull(resultPoints)
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}
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let padding = 100; // 增加内边距，让点不贴边
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let minX = 0;
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let minY = 0;
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let maxX = 0;
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let maxY = 0;
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let scale = 1;
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// 转换坐标
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function transformPoint(p, canvas) {
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return {
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x: padding + (p.x - minX) * scale,
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y: canvas.height - padding - (p.y - minY) * scale
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};
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}
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/**
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* canvas画点
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*/
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function draw(points) {
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var canvas = document.getElementById('canvas');
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var ctx = canvas.getContext('2d');
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// 清空画布
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ctx.clearRect(0, 0, canvas.width, canvas.height);
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// 找出所有点的最大最小值
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minX = Math.min(...points.map(p => p.x));
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maxX = Math.max(...points.map(p => p.x));
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minY = Math.min(...points.map(p => p.y));
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maxY = Math.max(...points.map(p => p.y));
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// 计算缩放比例
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var scaleX = (canvas.width - 2 * padding) / (maxX - minX || 1);
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var scaleY = (canvas.height - 2 * padding) / (maxY - minY || 1);
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scale = Math.min(scaleX, scaleY);
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// 绘制点
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var transformedPoints = points.map(p => transformPoint(p, canvas));
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ctx.fillStyle = 'blue';
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transformedPoints.forEach(point => {
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ctx.beginPath();
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ctx.arc(point.x, point.y, 4, 0, Math.PI * 2); // 绘制半径为4的圆点
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ctx.fill();
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});
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}
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/**
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* 画凸包
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*/
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function drawConvexHull(points) {
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// 使用相同的绘制函数，但使用不同的颜色
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var canvas = document.getElementById('canvas');
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var ctx = canvas.getContext('2d');
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// 绘制凸包
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ctx.beginPath();
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ctx.strokeStyle = 'red';
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var transformedPoints = points.map(p => transformPoint(p, canvas));
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ctx.moveTo(transformedPoints[0].x, transformedPoints[0].y);
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for (let i = 1; i < transformedPoints.length; i++) {
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ctx.lineTo(transformedPoints[i].x, transformedPoints[i].y);
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}
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// 闭合凸包
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ctx.lineTo(transformedPoints[0].x, transformedPoints[0].y);
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ctx.stroke();
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}
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//loadwasm
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function loadwasm() {
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var wasm_url = "./convex_hull.js";
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var script = document.createElement('script');
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script.src = wasm_url;
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script.onload = function () {
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//loadwasm
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console.log(Module)
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Module.onRuntimeInitialized = function () {
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// convex_hull()
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}
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}
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document.body.appendChild(script);
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}
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loadwasm()
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randomPointsToTextarea(30)
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//js实现凸包 不使用wasm
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function jsConvexHull(points) {
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// 如果点少于3个，直接返回原始点集
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if (points.length < 3) return points;
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// 找到最低且最左的点作为起始点
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let start = points.reduce((lowest, point) => {
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if (point.y < lowest.y || (point.y === lowest.y && point.x < lowest.x)) {
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return point;
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}
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return lowest;
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}, points[0]);
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// 计算其他点相对于起始点的极角，并排序
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let sorted = points
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.filter(point => point !== start)
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.map(point => ({
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point: point,
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angle: Math.atan2(point.y - start.y, point.x - start.x),
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distance: Math.sqrt(Math.pow(point.x - start.x, 2) + Math.pow(point.y - start.y, 2))
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}))
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.sort((a, b) => {
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if (a.angle === b.angle) {
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return a.distance - b.distance;
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}
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return a.angle - b.angle;
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})
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.map(item => item.point);
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// 将起始点加入结果数组
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sorted.unshift(start);
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// Graham扫描
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let stack = [sorted[0], sorted[1]];
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for (let i = 2; i < sorted.length; i++) {
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while (stack.length >= 2 && !isCounterClockwise(
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stack[stack.length - 2],
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stack[stack.length - 1],
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sorted[i]
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)) {
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stack.pop();
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}
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stack.push(sorted[i]);
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}
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return stack;
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}
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// 判断三个点是否形成逆时针方向
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function isCounterClockwise(p1, p2, p3) {
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return (p2.x - p1.x) * (p3.y - p1.y) - (p2.y - p1.y) * (p3.x - p1.x) > 0;
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}
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</script>
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2615
convex_hull.js
2615
convex_hull.js
File diff suppressed because one or more lines are too long
BIN
convex_hull.wasm
BIN
convex_hull.wasm
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/**
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* @license
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* Copyright 2015 The Emscripten Authors
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* SPDX-License-Identifier: MIT
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*/
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// Pthread Web Worker startup routine:
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// This is the entry point file that is loaded first by each Web Worker
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// that executes pthreads on the Emscripten application.
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'use strict';
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var Module = {};
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// Node.js support
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var ENVIRONMENT_IS_NODE = typeof process == 'object' && typeof process.versions == 'object' && typeof process.versions.node == 'string';
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if (ENVIRONMENT_IS_NODE) {
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// Create as web-worker-like an environment as we can.
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// See the parallel code in shell.js, but here we don't need the condition on
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// multi-environment builds, as we do not have the need to interact with the
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// modularization logic as shell.js must (see link.py:node_es6_imports and
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// how that is used in link.py).
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var nodeWorkerThreads = require('worker_threads');
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var parentPort = nodeWorkerThreads.parentPort;
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parentPort.on('message', (data) => onmessage({ data: data }));
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var fs = require('fs');
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var vm = require('vm');
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Object.assign(global, {
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self: global,
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require,
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Module,
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location: {
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// __filename is undefined in ES6 modules, and import.meta.url only in ES6
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// modules.
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href: __filename
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},
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Worker: nodeWorkerThreads.Worker,
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importScripts: (f) => vm.runInThisContext(fs.readFileSync(f, 'utf8'), {filename: f}),
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|
||||||
postMessage: (msg) => parentPort.postMessage(msg),
|
|
||||||
performance: global.performance || { now: Date.now },
|
|
||||||
});
|
|
||||||
}
|
|
||||||
|
|
||||||
// Thread-local guard variable for one-time init of the JS state
|
|
||||||
var initializedJS = false;
|
|
||||||
|
|
||||||
function assert(condition, text) {
|
|
||||||
if (!condition) abort('Assertion failed: ' + text);
|
|
||||||
}
|
|
||||||
|
|
||||||
function threadPrintErr(...args) {
|
|
||||||
var text = args.join(' ');
|
|
||||||
// See https://github.com/emscripten-core/emscripten/issues/14804
|
|
||||||
if (ENVIRONMENT_IS_NODE) {
|
|
||||||
fs.writeSync(2, text + '\n');
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
console.error(text);
|
|
||||||
}
|
|
||||||
function threadAlert(...args) {
|
|
||||||
var text = args.join(' ');
|
|
||||||
postMessage({cmd: 'alert', text, threadId: Module['_pthread_self']()});
|
|
||||||
}
|
|
||||||
// We don't need out() for now, but may need to add it if we want to use it
|
|
||||||
// here. Or, if this code all moves into the main JS, that problem will go
|
|
||||||
// away. (For now, adding it here increases code size for no benefit.)
|
|
||||||
var out = () => { throw 'out() is not defined in worker.js.'; }
|
|
||||||
var err = threadPrintErr;
|
|
||||||
self.alert = threadAlert;
|
|
||||||
var dbg = threadPrintErr;
|
|
||||||
|
|
||||||
Module['instantiateWasm'] = (info, receiveInstance) => {
|
|
||||||
// Instantiate from the module posted from the main thread.
|
|
||||||
// We can just use sync instantiation in the worker.
|
|
||||||
var module = Module['wasmModule'];
|
|
||||||
// We don't need the module anymore; new threads will be spawned from the main thread.
|
|
||||||
Module['wasmModule'] = null;
|
|
||||||
var instance = new WebAssembly.Instance(module, info);
|
|
||||||
// TODO: Due to Closure regression https://github.com/google/closure-compiler/issues/3193,
|
|
||||||
// the above line no longer optimizes out down to the following line.
|
|
||||||
// When the regression is fixed, we can remove this if/else.
|
|
||||||
return receiveInstance(instance);
|
|
||||||
}
|
|
||||||
|
|
||||||
// Turn unhandled rejected promises into errors so that the main thread will be
|
|
||||||
// notified about them.
|
|
||||||
self.onunhandledrejection = (e) => {
|
|
||||||
throw e.reason || e;
|
|
||||||
};
|
|
||||||
|
|
||||||
function handleMessage(e) {
|
|
||||||
try {
|
|
||||||
if (e.data.cmd === 'load') { // Preload command that is called once per worker to parse and load the Emscripten code.
|
|
||||||
|
|
||||||
// Until we initialize the runtime, queue up any further incoming messages.
|
|
||||||
let messageQueue = [];
|
|
||||||
self.onmessage = (e) => messageQueue.push(e);
|
|
||||||
|
|
||||||
// And add a callback for when the runtime is initialized.
|
|
||||||
self.startWorker = (instance) => {
|
|
||||||
// Notify the main thread that this thread has loaded.
|
|
||||||
postMessage({ 'cmd': 'loaded' });
|
|
||||||
// Process any messages that were queued before the thread was ready.
|
|
||||||
for (let msg of messageQueue) {
|
|
||||||
handleMessage(msg);
|
|
||||||
}
|
|
||||||
// Restore the real message handler.
|
|
||||||
self.onmessage = handleMessage;
|
|
||||||
};
|
|
||||||
|
|
||||||
// Module and memory were sent from main thread
|
|
||||||
Module['wasmModule'] = e.data.wasmModule;
|
|
||||||
|
|
||||||
// Use `const` here to ensure that the variable is scoped only to
|
|
||||||
// that iteration, allowing safe reference from a closure.
|
|
||||||
for (const handler of e.data.handlers) {
|
|
||||||
Module[handler] = (...args) => {
|
|
||||||
postMessage({ cmd: 'callHandler', handler, args: args });
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
Module['wasmMemory'] = e.data.wasmMemory;
|
|
||||||
|
|
||||||
Module['buffer'] = Module['wasmMemory'].buffer;
|
|
||||||
|
|
||||||
Module['workerID'] = e.data.workerID;
|
|
||||||
|
|
||||||
Module['ENVIRONMENT_IS_PTHREAD'] = true;
|
|
||||||
|
|
||||||
if (typeof e.data.urlOrBlob == 'string') {
|
|
||||||
importScripts(e.data.urlOrBlob);
|
|
||||||
} else {
|
|
||||||
var objectUrl = URL.createObjectURL(e.data.urlOrBlob);
|
|
||||||
importScripts(objectUrl);
|
|
||||||
URL.revokeObjectURL(objectUrl);
|
|
||||||
}
|
|
||||||
} else if (e.data.cmd === 'run') {
|
|
||||||
// Pass the thread address to wasm to store it for fast access.
|
|
||||||
Module['__emscripten_thread_init'](e.data.pthread_ptr, /*is_main=*/0, /*is_runtime=*/0, /*can_block=*/1);
|
|
||||||
|
|
||||||
// Await mailbox notifications with `Atomics.waitAsync` so we can start
|
|
||||||
// using the fast `Atomics.notify` notification path.
|
|
||||||
Module['__emscripten_thread_mailbox_await'](e.data.pthread_ptr);
|
|
||||||
|
|
||||||
assert(e.data.pthread_ptr);
|
|
||||||
// Also call inside JS module to set up the stack frame for this pthread in JS module scope
|
|
||||||
Module['establishStackSpace']();
|
|
||||||
Module['PThread'].receiveObjectTransfer(e.data);
|
|
||||||
Module['PThread'].threadInitTLS();
|
|
||||||
|
|
||||||
if (!initializedJS) {
|
|
||||||
initializedJS = true;
|
|
||||||
}
|
|
||||||
|
|
||||||
try {
|
|
||||||
Module['invokeEntryPoint'](e.data.start_routine, e.data.arg);
|
|
||||||
} catch(ex) {
|
|
||||||
if (ex != 'unwind') {
|
|
||||||
// The pthread "crashed". Do not call `_emscripten_thread_exit` (which
|
|
||||||
// would make this thread joinable). Instead, re-throw the exception
|
|
||||||
// and let the top level handler propagate it back to the main thread.
|
|
||||||
throw ex;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
} else if (e.data.cmd === 'cancel') { // Main thread is asking for a pthread_cancel() on this thread.
|
|
||||||
if (Module['_pthread_self']()) {
|
|
||||||
Module['__emscripten_thread_exit'](-1);
|
|
||||||
}
|
|
||||||
} else if (e.data.target === 'setimmediate') {
|
|
||||||
// no-op
|
|
||||||
} else if (e.data.cmd === 'checkMailbox') {
|
|
||||||
if (initializedJS) {
|
|
||||||
Module['checkMailbox']();
|
|
||||||
}
|
|
||||||
} else if (e.data.cmd) {
|
|
||||||
// The received message looks like something that should be handled by this message
|
|
||||||
// handler, (since there is a e.data.cmd field present), but is not one of the
|
|
||||||
// recognized commands:
|
|
||||||
err(`worker.js received unknown command ${e.data.cmd}`);
|
|
||||||
err(e.data);
|
|
||||||
}
|
|
||||||
} catch(ex) {
|
|
||||||
err(`worker.js onmessage() captured an uncaught exception: ${ex}`);
|
|
||||||
if (ex?.stack) err(ex.stack);
|
|
||||||
Module['__emscripten_thread_crashed']?.();
|
|
||||||
throw ex;
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
self.onmessage = handleMessage;
|
|
||||||
33
readme.md
33
readme.md
@ -1 +1,32 @@
|
|||||||
凸包算法的wasm实现
|
# 凸包算法的wasm实现
|
||||||
|
[在线测试地址](https://kuraa.cc/upload/convex_hull.html)
|
||||||
|
```js
|
||||||
|
function callWasmConvexHull(points) {
|
||||||
|
//长度
|
||||||
|
var n = points.length;
|
||||||
|
var pointsPtr = Module._malloc(n * 8); //8字节一个点
|
||||||
|
|
||||||
|
for (let i = 0; i < n; i++) {
|
||||||
|
Module.setValue(pointsPtr + i * 8, points[i].x, 'i32');
|
||||||
|
Module.setValue(pointsPtr + i * 8 + 4, points[i].y, 'i32');
|
||||||
|
}
|
||||||
|
//多少点
|
||||||
|
var resultPtr = Module._malloc(n * 8);
|
||||||
|
var resultSizePtr = Module._malloc(4);
|
||||||
|
//调用wasm
|
||||||
|
Module._convexHull(pointsPtr, n, resultPtr, resultSizePtr);
|
||||||
|
var resultSize = Module.getValue(resultSizePtr, 'i32');
|
||||||
|
var resultPoints = [];
|
||||||
|
//读
|
||||||
|
for (let i = 0; i < resultSize; i++) {
|
||||||
|
var x = Module.getValue(resultPtr + i * 8, 'i32');
|
||||||
|
var y = Module.getValue(resultPtr + i * 8 + 4, 'i32');
|
||||||
|
resultPoints.push({ x: x, y: y });
|
||||||
|
}
|
||||||
|
// 释放
|
||||||
|
Module._free(pointsPtr);
|
||||||
|
Module._free(resultPtr);
|
||||||
|
Module._free(resultSizePtr);
|
||||||
|
return resultPoints
|
||||||
|
}
|
||||||
|
```
|
||||||
54
test.html
54
test.html
@ -1,54 +0,0 @@
|
|||||||
<body></body>
|
|
||||||
<script>
|
|
||||||
//计算凸包
|
|
||||||
function convex_hull(points) {
|
|
||||||
var points = [
|
|
||||||
{ x: 0, y: 0 }, { x: 1, y: 1 }, { x: 2, y: 2 },
|
|
||||||
{ x: 0, y: 3 }, { x: 3, y: 0 }, { x: 3, y: 3 },
|
|
||||||
{ x: 2, y: 1 }, { x: 1, y: 2 }
|
|
||||||
];
|
|
||||||
//长度
|
|
||||||
var n = points.length;
|
|
||||||
var pointsPtr = Module._malloc(n * 8); //8字节一个点
|
|
||||||
|
|
||||||
for (let i = 0; i < n; i++) {
|
|
||||||
Module.setValue(pointsPtr + i * 8, points[i].x, 'i32');
|
|
||||||
Module.setValue(pointsPtr + i * 8 + 4, points[i].y, 'i32');
|
|
||||||
}
|
|
||||||
//多少点
|
|
||||||
var resultPtr = Module._malloc(n * 8);
|
|
||||||
var resultSizePtr = Module._malloc(4);
|
|
||||||
Module._convexHull(pointsPtr, n, resultPtr, resultSizePtr);
|
|
||||||
var resultSize = Module.getValue(resultSizePtr, 'i32');
|
|
||||||
var resultPoints = [];
|
|
||||||
//读
|
|
||||||
for (let i = 0; i < resultSize; i++) {
|
|
||||||
var x = Module.getValue(resultPtr + i * 8, 'i32');
|
|
||||||
var y = Module.getValue(resultPtr + i * 8 + 4, 'i32');
|
|
||||||
resultPoints.push({ x: x, y: y });
|
|
||||||
}
|
|
||||||
console.log(resultPoints);
|
|
||||||
|
|
||||||
// 释放
|
|
||||||
Module._free(pointsPtr);
|
|
||||||
Module._free(resultPtr);
|
|
||||||
Module._free(resultSizePtr);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
//loadwasm
|
|
||||||
function loadwasm() {
|
|
||||||
var wasm_url = "./convex_hull.js";
|
|
||||||
var script = document.createElement('script');
|
|
||||||
script.src = wasm_url;
|
|
||||||
script.onload = function () {
|
|
||||||
//loadwasm
|
|
||||||
console.log(Module)
|
|
||||||
Module.onRuntimeInitialized = function () {
|
|
||||||
convex_hull()
|
|
||||||
}
|
|
||||||
}
|
|
||||||
document.body.appendChild(script);
|
|
||||||
}
|
|
||||||
loadwasm()
|
|
||||||
</script>
|
|
||||||
3
生成
3
生成
@ -1,3 +1,4 @@
|
|||||||
docker run --rm -v $(pwd):/src emscripten/emsdk emcc convex_hull.c -o convex_hull.js -s IMPORTED_MEMORY=1 -s INITIAL_MEMORY=104857600 -s EXPORTED_FUNCTIONS="['_convexHull','_malloc','_free','setValue','getValue']" -s EXTRA_EXPORTED_RUNTIME_METHODS='["ccall", "cwrap"]'
|
docker run --rm -v $(pwd):/src emscripten/emsdk emcc convex_hull.c -o convex_hull.js -s IMPORTED_MEMORY=1 -s INITIAL_MEMORY=104857600 -s EXPORTED_FUNCTIONS="['_convexHull','_malloc','_free','setValue','getValue']" -s EXTRA_EXPORTED_RUNTIME_METHODS='["ccall", "cwrap"]'
|
||||||
|
|
||||||
docker run --rm -v $(pwd):/src emscripten/emsdk emcc convex_hull.c -o convex_hull.js -s USE_PTHREADS=1 -s IMPORTED_MEMORY=1 -s EXPORTED_FUNCTIONS="['_convexHull','_malloc','_free','setValue','getValue']" -s EXTRA_EXPORTED_RUNTIME_METHODS='["ccall", "cwrap"]'
|
# 优化指令
|
||||||
|
docker run --rm -v $(pwd):/src emscripten/emsdk emcc convex_hull.c -o convex_hull.js -s IMPORTED_MEMORY=1 -s EXPORTED_FUNCTIONS="['_convexHull','_malloc','_free','setValue','getValue']" -s EXTRA_EXPORTED_RUNTIME_METHODS='["ccall", "cwrap"]' -O2
|
||||||
Loading…
Reference in New Issue
Block a user