105 lines
2.6 KiB
Matlab
105 lines
2.6 KiB
Matlab
function plot_3d_grid_voxel_function_fixed(nx, ny, nz, dx, dy, dz, data)
|
|
% 使用自定义voxel函数绘制三维网格（每个网格单一颜色）
|
|
% 输入参数：
|
|
% nx, ny, nz - 各方向的网格数
|
|
% dx, dy, dz - 各方向的网格尺寸向量
|
|
% data - 物理量数据，维度为(nx, ny, nz)
|
|
|
|
% 计算每个网格的中心坐标
|
|
x_center = zeros(nx, 1);
|
|
x_center(1) = dx(1)/2;
|
|
for i = 2:nx
|
|
x_center(i) = x_center(i-1) + (dx(i-1) + dx(i))/2;
|
|
end
|
|
|
|
y_center = zeros(ny, 1);
|
|
y_center(1) = dy(1)/2;
|
|
for i = 2:ny
|
|
y_center(i) = y_center(i-1) + (dy(i-1) + dy(i))/2;
|
|
end
|
|
|
|
z_center = zeros(nz, 1);
|
|
z_center(1) = dz(1)/2;
|
|
for i = 2:nz
|
|
z_center(i) = z_center(i-1) + (dz(i-1) + dz(i))/2;
|
|
end
|
|
|
|
% 创建图形
|
|
figure('Position', [100, 100, 1000, 800]);
|
|
hold on;
|
|
|
|
% 设置颜色映射
|
|
colormap jet;
|
|
caxis([min(data(:)), max(data(:))]);
|
|
|
|
% 绘制每个体素
|
|
alpha_val = 0.9; % 透明度
|
|
|
|
for i = 1:nx
|
|
for j = 1:ny
|
|
for k = 1:nz
|
|
% 绘制体素 - 传递当前网格的值
|
|
voxel_fixed([x_center(i), y_center(j), z_center(k)], ...
|
|
[dx(i), dy(j), dz(k)], ...
|
|
data(i, j, k), alpha_val);
|
|
end
|
|
end
|
|
end
|
|
|
|
% 设置图形属性
|
|
colorbar;
|
|
xlabel('X');
|
|
ylabel('Y');
|
|
zlabel('Z');
|
|
title('三维笛卡尔网格全充满物理量分布（体素法，单一颜色）');
|
|
axis equal;
|
|
view(3);
|
|
grid on;
|
|
box on;
|
|
|
|
% 光照设置
|
|
lighting gouraud;
|
|
light('Position', [1 1 1], 'Style', 'infinite');
|
|
light('Position', [-1 -1 -1], 'Style', 'infinite');
|
|
|
|
hold off;
|
|
end
|
|
|
|
function voxel_fixed(center, size, value, alpha)
|
|
% 绘制单个体素的辅助函数（每个面使用相同颜色）
|
|
% center: [x, y, z] 中心坐标
|
|
% size: [dx, dy, dz] 尺寸
|
|
% value: 物理量值
|
|
% alpha: 透明度
|
|
|
|
% 计算8个顶点
|
|
x = center(1) + [-size(1)/2, size(1)/2];
|
|
y = center(2) + [-size(2)/2, size(2)/2];
|
|
z = center(3) + [-size(3)/2, size(3)/2];
|
|
|
|
% 创建8个顶点
|
|
vertices = [x(1), y(1), z(1);
|
|
x(2), y(1), z(1);
|
|
x(2), y(2), z(1);
|
|
x(1), y(2), z(1);
|
|
x(1), y(1), z(2);
|
|
x(2), y(1), z(2);
|
|
x(2), y(2), z(2);
|
|
x(1), y(2), z(2)];
|
|
|
|
% 6个面的顶点索引
|
|
faces = [1 2 3 4;
|
|
5 6 7 8;
|
|
1 2 6 5;
|
|
2 3 7 6;
|
|
3 4 8 7;
|
|
4 1 5 8];
|
|
|
|
% 关键修改：使用 'flat' 并确保所有面使用相同的颜色值
|
|
patch('Vertices', vertices, 'Faces', faces, ...
|
|
'FaceColor', 'flat', ... % 'flat' 确保每个面单一颜色
|
|
'FaceVertexCData', value * ones(size(faces, 1), 1), ... % 所有面相同颜色
|
|
'CDataMapping', 'scaled', ...
|
|
'FaceAlpha', alpha, ...
|
|
'EdgeColor', 'none');
|
|
end |