Method updateGridDisplay

pixelizer.js:859–872

()

    updateGridDisplay() {
        if (!this.processedCanvas || !this.basePixelCanvas) return;
        
        // 重绘基础图像
        const ctx = this.processedCanvas.getContext('2d');
        ctx.imageSmoothingEnabled = false;
        ctx.clearRect(0, 0, this.processedCanvas.width, this.processedCanvas.height);
        ctx.drawImage(this.basePixelCanvas, 0, 0);
        
        // 绘制网格
        if (document.getElementById('showPixelGrid').checked) {
            this.drawGrid(this.processedCanvas);
        }
    }

    drawGrid(canvas) {
        const ctx = canvas.getContext('2d');