颜色映射图例，规格尺寸修改

src/glwidget.cpp

@@ -41,6 +41,10 @@ static void matIdentity(float m[16]) {
     m[0] = m[5] = m[10] = m[15] = 1;
 }
 
+static QVector3D toColorVec(const QColor& color) {
+    return QVector3D(color.redF(), color.greenF(), color.blueF());
+}
+
 GLWidget::GLWidget(QWidget *parent)
     : QOpenGLWidget(parent) {
     setMinimumSize(640, 480);
@@ -191,6 +195,30 @@ void GLWidget::setShowBg(bool on = true) {
     update();
 }
 
+void GLWidget::setColorLow(const QColor& color) {
+    const QVector3D next = toColorVec(color);
+    if (m_colorLow == next)
+        return;
+    m_colorLow = next;
+    update();
+}
+
+void GLWidget::setColorMid(const QColor& color) {
+    const QVector3D next = toColorVec(color);
+    if (m_colorMid == next)
+        return;
+    m_colorMid = next;
+    update();
+}
+
+void GLWidget::setColorHigh(const QColor& color) {
+    const QVector3D next = toColorVec(color);
+    if (m_colorHigh == next)
+        return;
+    m_colorHigh = next;
+    update();
+}
+
 void GLWidget::initializeGL() {
     initializeOpenGLFunctions();
 
@@ -211,6 +239,14 @@ void GLWidget::initializeGL() {
     matIdentity(m_proj);
 }
 
+void GLWidget::initGeometry_() {
+    initDotTexture_();
+    initBackgroundGeometry_();
+    initPanelGeometry_();
+    initDotGeometry_();
+    initRoomGeometry_(); 
+}
+
 void GLWidget::resizeGL(int w, int h) {
     glViewport(0, 0, w, h);
 }
@@ -293,8 +329,11 @@ void GLWidget::paintGL() {
         // uMinV/uMaxV: 传感值范围，用于 fragment shader 把 value 映射成颜色
         m_dotsProg->setUniformValue("uMinV", float(m_min));
         m_dotsProg->setUniformValue("uMaxV", float(m_max));
+        m_dotsProg->setUniformValue("uColorLow", m_colorLow);
+        m_dotsProg->setUniformValue("uColorMid", m_colorMid);
+        m_dotsProg->setUniformValue("uColorHigh", m_colorHigh);
         const int hasData = (m_hasData.load() || m_dotTex == 0) ? 1 : 0;
-        m_dotsProg->setUniformValue("uHasData", 0);
+        m_dotsProg->setUniformValue("uHasData", hasData);
         m_dotsProg->setUniformValue("uCameraPos", m_cameraPos);
         m_dotsProg->setUniformValue("uDotTex", 0);
         if (m_dotTex) {
@@ -427,6 +466,7 @@ void GLWidget::mousePressEvent(QMouseEvent *event) {
     if (event->button() == Qt::LeftButton) {
         QVector3D world;
         const int index = pickDotIndex_(event->pos(), &world);
+        qInfo() << "clicked index: " << index;
         if (index >= 0) {
             float value = 0.0f;
             int row = 0;
@@ -1098,3 +1138,17 @@ void GLWidget::setShowGrid(bool on) {
     m_showGrid = on;
     update();
 }
+
+void GLWidget::setRow(int row) {
+    row = qMax(0, row);
+    if (m_rows == row)
+        return;
+    setSpec(row, m_cols, m_pitch, m_dotRadius);
+}
+
+void GLWidget::setCol(int col) {
+    col = qMax(0, col);
+    if (m_cols == col)
+        return;
+    setSpec(m_rows, col, m_pitch, m_dotRadius);
+}