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#815 First working interpolation scheme, so values are not insane

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This commit is contained in:
Jacob Støren
2016-09-27 10:15:48 +02:00
parent 6b1dd89b2e
commit 4c98ea2283
4 changed files with 156 additions and 16 deletions
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62
ApplicationCode/ModelVisualization/Intersections/RivHexGridIntersectionTools.h
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@@ -92,6 +92,64 @@ class RivIntersectionVertexWeights
public:
explicit RivIntersectionVertexWeights(): m_count(0) {}
/*
v111 k11 v11 v112 v211 k21 v21 v212
+------+-----+ +--------+------+
| |
|k1 |k2
| k |
v1+--------+------------+v2
| |
| |
| |
+------+----+ +--------+-------+
v121 k12 v12 v122 v221 k22 v22 v222
Where the k's are normalized distances along the edge, from the edge start vertex .
This is the interpolation sceme:
v = (1 - k )* v1 + k *v2;
v1 = (1 - k1 )* v11 + k1*v12;
v2 = (1 - k2 )* v21 + k2*v22;
v11 = (1 - k11)* v111 + k11*v112;
v12 = (1 - k12)* v121 + k12*v122;
v21 = (1 - k21)* v211 + k21*v212;
v22 = (1 - k22)* v221 + k22*v222;
Substitution and reorganizing gives the expressions seen below.
*/
explicit RivIntersectionVertexWeights( size_t edgeVx111, size_t edgeVx112, double k11,
size_t edgeVx121, size_t edgeVx122, double k12,
size_t edgeVx211, size_t edgeVx212, double k21,
size_t edgeVx221, size_t edgeVx222, double k22,
double k1,
double k2,
double k) : m_count(8)
{
m_vxIds[0] = (edgeVx111);
m_vxIds[1] = (edgeVx112);
m_vxIds[2] = (edgeVx121);
m_vxIds[3] = (edgeVx122);
m_vxIds[4] = (edgeVx211);
m_vxIds[5] = (edgeVx212);
m_vxIds[6] = (edgeVx221);
m_vxIds[7] = (edgeVx222);
m_weights[7] = ((float)(k * k2 * k22));
m_weights[6] = ((float)(k * k2 - k * k2 * k22));
m_weights[5] = ((float)(( k - k * k2 ) * k21));
m_weights[4] = ((float)((k * k2 - k ) * k21 - k * k2 + k));
m_weights[3] = ((float)((1-k) * k1 * k12));
m_weights[2] = ((float)((k-1) * k1 * k12 + ( 1 - k ) * k1));
m_weights[1] = ((float)(( (k-1) * k1 - k + 1 ) * k11));
m_weights[0] = ((float)(( (1-k) * k1 + k - 1 ) * k11 + ( k - 1 ) * k1 - k + 1));
}
explicit RivIntersectionVertexWeights(size_t edge1Vx1, size_t edge1Vx2, double normDistFromE1V1,
size_t edge2Vx1, size_t edge2Vx2, double normDistFromE2V1,
double normDistFromE1Cut) : m_count(4)
@@ -122,7 +180,7 @@ public:
private:
size_t m_vxIds[4];
float m_weights[4];
size_t m_vxIds[8];
float m_weights[8];
int m_count;
};