Gabriele Cosmo
49 lines
1.1 KiB
Plaintext
49 lines
1.1 KiB
Plaintext
// Copyright (C) 2010, Guy Barrand. All rights reserved.
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// See the file tools.license for terms.
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#ifndef tools_box_3f
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#define tools_box_3f
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#include "../mnmx"
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#include <cfloat> // FLT_MAX
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namespace tools {
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// optimization (used in exlib/sg/text_hershey) :
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inline void box_3f_make_empty(float& a_mn_x,float& a_mn_y,float& a_mn_z,
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float& a_mx_x,float& a_mx_y,float& a_mx_z){
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a_mn_x = FLT_MAX;
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a_mn_y = FLT_MAX;
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a_mn_z = FLT_MAX;
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a_mx_x = -FLT_MAX;
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a_mx_y = -FLT_MAX;
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a_mx_z = -FLT_MAX;
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}
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inline void box_3f_extend_by(float& a_mn_x,float& a_mn_y,float& a_mn_z,
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float& a_mx_x,float& a_mx_y,float& a_mx_z,
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float a_x,float a_y,float a_z){
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if(a_mx_x<a_mn_x){ //is empty.
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a_mn_x = a_x;
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a_mn_y = a_y;
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a_mn_z = a_z;
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a_mx_x = a_x;
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a_mx_y = a_y;
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a_mx_z = a_z;
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} else {
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a_mn_x = min_of<float>(a_x,a_mn_x);
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a_mn_y = min_of<float>(a_y,a_mn_y);
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a_mn_z = min_of<float>(a_z,a_mn_z);
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a_mx_x = max_of<float>(a_x,a_mx_x);
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a_mx_y = max_of<float>(a_y,a_mx_y);
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a_mx_z = max_of<float>(a_z,a_mx_z);
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}
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}
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}
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#endif
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