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Author SHA1 Message Date
9037ef6ac3 Merge branch 'main' of http://47.107.152.87:3000/dyf/APP 2025-11-05 11:17:11 +08:00
a30a631ea6 改成13*13符合设备端 2025-11-05 11:17:08 +08:00
2 changed files with 27 additions and 13 deletions

View File

@ -96,14 +96,19 @@
} }
let convertCharToMatrix = (drawResult, item) => { let convertCharToMatrix = (drawResult, item) => {
// 设备端使用13x13点阵渲染
const charWidth = 13; const charWidth = 13;
const charHeight = 12; const charHeight = 13;
const { pixelData, width, height } = drawResult; const { pixelData, width, height } = drawResult;
// 将高分辨率像素降采样为13x12的布尔矩阵 // 将高分辨率像素降采样为13x13的布尔矩阵
const target = new Array(charWidth * charHeight).fill(0); const target = new Array(charWidth * charHeight).fill(0);
const threshold = 0.5; // 每个小块中超过50%深色判为1 const threshold = 0.5; // 每个小块中超过50%亮色(文字)判为1
// 确保采样区域严格对齐从PADDING_X开始只采样13列
// 字符实际绘制区域从PADDING_X开始宽度为13*SCALE
const charStartX = PADDING_X;
const charEndX = PADDING_X + charWidth * SCALE;
// 确保采样区域严格对齐从PADDING_X开始但只采样13列
for (let y = 0; y < charHeight; y++) { for (let y = 0; y < charHeight; y++) {
for (let x = 0; x < charWidth; x++) { for (let x = 0; x < charWidth; x++) {
let onCount = 0; let onCount = 0;
@ -116,31 +121,39 @@
for (let sx = 0; sx < SCALE; sx++) { for (let sx = 0; sx < SCALE; sx++) {
const px = startX + sx; const px = startX + sx;
const py = startY + sy; const py = startY + sy;
// 边界检查确保不超出Canvas边界且不超出字符实际绘制区域
if (px < 0 || py < 0 || px >= width || py >= height) { if (px < 0 || py < 0 || px >= width || py >= height) {
// 边界外视为背景(色) // 边界外视为背景(色)
continue; continue;
} }
// 额外检查:确保不采样到字符右侧的残留区域
if (px >= charEndX) {
// 超出字符区域,视为背景
continue;
}
const idx = (py * width + px) * 4; const idx = (py * width + px) * 4;
const R = pixelData[idx]; const R = pixelData[idx];
const G = pixelData[idx + 1]; const G = pixelData[idx + 1];
const B = pixelData[idx + 2]; const B = pixelData[idx + 2];
const A = pixelData[idx + 3] || 255; const A = pixelData[idx + 3] || 255;
// 使用更严格的阈值考虑alpha通道 // 计算亮度
const luminance = 0.299 * R + 0.587 * G + 0.114 * B; const luminance = 0.299 * R + 0.587 * G + 0.114 * B;
const alpha = A / 255; const alpha = A / 255;
// 只有深色且不透明才计入 // 背景是黑色,文字是白色,所以判断亮色(>=128为文字点
if (luminance < 128 && alpha > 0.5) onCount++; if (luminance >= 128 && alpha > 0.5) onCount++;
total++; total++;
} }
} }
// 当色占比超过阈值时判为1至少需要采样到一些像素 // 当色占比超过阈值时判为1至少需要采样到一些像素
target[y * charWidth + x] = (total > 0 && onCount / total >= threshold) ? 1 : 0; target[y * charWidth + x] = (total > 0 && onCount / total >= threshold) ? 1 : 0;
} }
} }
const lowBytes = new Array(charWidth).fill(0); const lowBytes = new Array(charWidth).fill(0);
const highBytes = new Array(charWidth).fill(0); const highBytes = new Array(charWidth).fill(0);
// 按列打包每列12行分成上下两字节 // 按列打包每列13行分成上下两字节低字节0-7行8行高字节8-12行5行
for (let col = 0; col < charWidth; col++) { for (let col = 0; col < charWidth; col++) {
for (let row = 0; row < charHeight; row++) { for (let row = 0; row < charHeight; row++) {
const pixel = target[row * charWidth + col]; const pixel = target[row * charWidth + col];
@ -149,7 +162,7 @@
// 低字节0-7行从低位到高位 // 低字节0-7行从低位到高位
lowBytes[col] |= (1 << row); lowBytes[col] |= (1 << row);
} else { } else {
// 高字节8-11行,从低位到高位 // 高字节8-12行,从低位到高位使用5位剩余3位未使用
highBytes[col] |= (1 << (row - 8)); highBytes[col] |= (1 << (row - 8));
} }
} }
@ -163,8 +176,9 @@
let ctx = this.ctx; let ctx = this.ctx;
// 1. 动态调整Canvas尺寸高分辨率 // 1. 动态调整Canvas尺寸高分辨率
// 设备端使用13x13点阵渲染
this.currentCanvasWidth = 13 * SCALE + PADDING_X; this.currentCanvasWidth = 13 * SCALE + PADDING_X;
this.currentCanvasHeight = 12 * SCALE; this.currentCanvasHeight = 13 * SCALE;
// 2. 清空Canvas绘制背景 // 2. 清空Canvas绘制背景
this.clearCanvas(); this.clearCanvas();

View File

@ -88,7 +88,7 @@
<view class="btnSend fright" v-on:click.stop="sendUsr">发送</view> <view class="btnSend fright" v-on:click.stop="sendUsr">发送</view>
<view class="clear"></view> <view class="clear"></view>
<textToDotMatrixFor7305 class="TextToHex" ref="textToHex" :txts="formData.textLines" <textToDotMatrixFor7305 class="TextToHex" ref="textToHex" :txts="formData.textLines"
:bgColor="'#FFFFFF'" :color="'#000000'" :fontSize="11" ></textToDotMatrixFor7305> :bgColor="'#000000'" :color="'#FFFFFF'" :fontSize="11" ></textToDotMatrixFor7305>
</view> </view>
<view class="item"> <view class="item">