37 lines
1020 B
C
37 lines
1020 B
C
#include "gryphn_vec3.h"
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#include "math.h"
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gnVec3 gnVec3Subtract(gnVec3 a, gnVec3 b) { return (gnVec3){
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.x = a.x - b.x,
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.y = a.y - b.y,
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.z = a.z - b.z };
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}
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gnVec3 gnVec3Add(gnVec3 a, gnVec3 b) { return (gnVec3){
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.x = a.x + b.x,
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.y = a.y + b.y,
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.z = a.z + b.z };
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}
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gnVec3 gnVec3Normalize(gnVec3 in) {
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float lengthOfVector = sqrt((in.x * in.x) + (in.y * in.y) + (in.z * in.z));
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return (gnVec3){
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.a = in.x / lengthOfVector,
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.b = in.y / lengthOfVector,
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.c = in.z / lengthOfVector};
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}
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gnVec3 gnVec3Cross(gnVec3 a, gnVec3 b) { return (gnVec3){
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.x = a.y * b.z - a.z * b.y,
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.y = a.z * b.x - a.x * b.z,
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.z = a.x * b.y - a.y * b.x};
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}
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float gnVec3Dot(gnVec3 a, gnVec3 b) { return a.x * b.x + a.y * b.y + a.z * b.z; }
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gnVec3 gnVec3Multiply(gnVec3 a, gnVec3 b) { return (gnVec3){
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.x = a.x * b.x,
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.y = a.y * b.y,
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.z = a.z * b.z };
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}
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gnVec3 gnVec3MultiplyBy(gnVec3 a, float b) { return (gnVec3){
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.x = a.x * b,
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.y= a.y * b,
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.z = a.z * b };
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}
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