Method processManualMode

pixelizer.js:556–582

()

    }

    async processManualMode() {
        const targetWidth = parseInt(document.getElementById('targetWidth').value) || 64;
        
        this.showProgress(30, '按目标宽度像素化...');
        
        // 创建处理canvas
        const canvas = document.createElement('canvas');
        const ctx = canvas.getContext('2d');
        
        // 限制处理尺寸
        const maxSize = 2000;
        const scale = Math.min(1, maxSize / Math.max(this.originalImage.width, this.originalImage.height));
        
        canvas.width = Math.floor(this.originalImage.width * scale);
        canvas.height = Math.floor(this.originalImage.height * scale);
        
        ctx.imageSmoothingEnabled = false;
        ctx.drawImage(this.originalImage, 0, 0, canvas.width, canvas.height);
        
        this.showProgress(60, '生成基准像素图...');
        this.basePixelCanvas = this.pixelateToWidth(canvas, targetWidth);
        
        this.showProgress(80, '优化颜色...');
        await this.applyColorQuantization();
        
        this.showProgress(100, '完成处理');
    }

    /**
     * 下采样到基准像素图