28 lines
718 B
C
28 lines
718 B
C
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// MACROS
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// swap(x, y, buffer)
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#define SWAP(a,b,c) {(c)=(a); (a)=(b); (b)=(c);}
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// dotproduct of two vectors
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#define dotProduct(v0, v1) \
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(v0).vx * (v1).vx + \
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(v0).vy * (v1).vy + \
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(v0).vz * (v1).vz
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// min value
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#define min(a,b) \
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(a)-(b)>0?(b):(a)
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// max
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#define max(a,b) \
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(a)-(b)>0?(a):(b)
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// substract vector
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#define subVector(v0, v1) \
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(v0).vx - (v1).vx, \
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(v0).vy - (v1).vy, \
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(v0).vz - (v1).vz
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#define normalizeVector(v) \
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((v)->vx << 12) >> 8, \
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((v)->vy << 12) >> 8, \
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((v)->vz << 12) >> 8
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