105 lines
2.8 KiB
Matlab
105 lines
2.8 KiB
Matlab
function plot_3d_grid_transparent(nx, ny, nz, dx, dy, dz, data)
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% 绘制半透明效果的三维网格
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% 输入参数：
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% nx, ny, nz - 各方向的网格数
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% dx, dy, dz - 各方向的网格尺寸向量
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% data - 物理量数据，维度为(nx, ny, nz)
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% 计算每个网格的边界坐标
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x_edges = zeros(nx+1, 1);
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x_edges(1) = 0;
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for i = 1:nx
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x_edges(i+1) = x_edges(i) + dx(i);
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end
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y_edges = zeros(ny+1, 1);
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y_edges(1) = 0;
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for i = 1:ny
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y_edges(i+1) = y_edges(i) + dy(i);
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end
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z_edges = zeros(nz+1, 1);
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z_edges(1) = 0;
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for i = 1:nz
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z_edges(i+1) = z_edges(i) + dz(i);
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end
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% 创建图形
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figure('Position', [100, 100, 1000, 800]);
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hold on;
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% 设置颜色映射
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colormap jet;
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caxis([min(data(:)), max(data(:))]);
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% 根据物理量值设置透明度
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% 值越大越不透明，值越小越透明
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data_min = min(data(:));
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data_max = max(data(:));
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data_range = data_max - data_min;
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for i = 1:nx
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for j = 1:ny
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for k = 1:nz
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% 获取当前体素的边界
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x_min = x_edges(i);
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x_max = x_edges(i+1);
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y_min = y_edges(j);
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y_max = y_edges(j+1);
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z_min = z_edges(k);
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z_max = z_edges(k+1);
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% 获取当前体素的物理量值
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value = data(i, j, k);
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% 根据值设置透明度（值越大越不透明）
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% alpha_val = 0.3 + 0.6 * (value - data_min) / data_range;
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alpha_val = 1;
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% 创建体素的8个顶点
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vertices = [x_min, y_min, z_min;
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x_max, y_min, z_min;
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x_max, y_max, z_min;
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x_min, y_max, z_min;
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x_min, y_min, z_max;
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x_max, y_min, z_max;
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x_max, y_max, z_max;
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x_min, y_max, z_max];
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% 创建6个面的顶点索引
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faces = [1 2 3 4; % 底面
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5 6 7 8; % 顶面
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1 2 6 5; % 前面
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2 3 7 6; % 右面
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3 4 8 7; % 后面
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4 1 5 8]; % 左面
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% 绘制体素
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patch('Vertices', vertices, 'Faces', faces, ...
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'FaceColor', 'flat', ...
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'FaceVertexCData', value, ...
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'CDataMapping', 'scaled', ...
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'FaceAlpha', alpha_val, ...
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'EdgeColor', 'none');
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end
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end
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end
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% 设置图形属性
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colorbar;
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xlabel('X');
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ylabel('Y');
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zlabel('Z');
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title('三维笛卡尔网格全充满物理量分布（透明度与数值相关）');
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axis equal;
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view(3);
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grid on;
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box on;
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% 光照设置
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lighting gouraud;
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light('Position', [1 1 1], 'Style', 'infinite');
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light('Position', [-1 -1 -1], 'Style', 'infinite');
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hold off;
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end |