Improve Clouds::render mathematics
parent
5698e2baf8
commit
a603a76787
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@ -95,13 +95,13 @@ void Clouds::render()
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*/
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const s16 cloud_radius_i = 12;
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const float cloud_size = BS*64;
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const v2f cloud_speed(0, -BS*2);
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const float cloud_size = BS * 64;
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const v2f cloud_speed(0, -BS * 2);
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const float cloud_full_radius = cloud_size * cloud_radius_i;
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// Position of cloud noise origin in world coordinates
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v2f world_cloud_origin_pos_f = m_time*cloud_speed;
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v2f world_cloud_origin_pos_f = m_time * cloud_speed;
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// Position of cloud noise origin from the camera
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v2f cloud_origin_from_camera_f = world_cloud_origin_pos_f - m_camera_pos;
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// The center point of drawing in the noise
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@ -160,32 +160,27 @@ void Clouds::render()
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// Read noise
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bool *grid = new bool[cloud_radius_i*2*cloud_radius_i*2];
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bool *grid = new bool[cloud_radius_i * 2 * cloud_radius_i * 2];
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for(s16 zi=-cloud_radius_i; zi<cloud_radius_i; zi++)
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for(s16 xi=-cloud_radius_i; xi<cloud_radius_i; xi++)
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{
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u32 i = (zi+cloud_radius_i)*cloud_radius_i*2 + xi+cloud_radius_i;
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float cloud_size_noise = cloud_size / BS / 200;
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v2s16 p_in_noise_i(
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xi+center_of_drawing_in_noise_i.X,
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zi+center_of_drawing_in_noise_i.Y
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);
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for(s16 zi = -cloud_radius_i; zi < cloud_radius_i; zi++) {
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u32 si = (zi + cloud_radius_i) * cloud_radius_i * 2 + cloud_radius_i;
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#if 0
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double noise = noise2d_perlin_abs(
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(float)p_in_noise_i.X*cloud_size/BS/200,
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(float)p_in_noise_i.Y*cloud_size/BS/200,
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m_seed, 3, 0.4);
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grid[i] = (noise >= 0.80);
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#endif
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#if 1
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double noise = noise2d_perlin(
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(float)p_in_noise_i.X*cloud_size/BS/200,
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(float)p_in_noise_i.Y*cloud_size/BS/200,
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m_seed, 3, 0.5);
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grid[i] = (noise >= 0.4);
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#endif
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for(s16 xi = -cloud_radius_i; xi < cloud_radius_i; xi++) {
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u32 i = si + xi;
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v2s16 p_in_noise_i(
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xi + center_of_drawing_in_noise_i.X,
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zi + center_of_drawing_in_noise_i.Y
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);
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double noise = noise2d_perlin(
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(float)p_in_noise_i.X * cloud_size_noise,
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(float)p_in_noise_i.Y * cloud_size_noise,
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m_seed, 3, 0.5);
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grid[i] = (noise >= 0.4);
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}
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}
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#define GETINDEX(x, z, radius) (((z)+(radius))*(radius)*2 + (x)+(radius))
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@ -230,8 +225,8 @@ void Clouds::render()
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}*/
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f32 rx = cloud_size/2;
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f32 ry = 8*BS;
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f32 rz = cloud_size/2;
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f32 ry = 8 * BS;
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f32 rz = cloud_size / 2;
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for(int i=0; i<num_faces_to_draw; i++)
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{
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