82 lines
1.1 KiB
C
82 lines
1.1 KiB
C
#ifndef HANDMADE_MATH_H
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#define HANDMADE_MATH_H
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/* TODO: Make these static. */
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struct v2 {
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float X, Y;
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float E[2];
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};
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struct v2 V2(float X, float Y)
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{
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struct v2 Result;
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Result.X = X;
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Result.Y = Y;
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return Result;
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}
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struct v2 V2Multiply(float A, struct v2 B)
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{
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struct v2 Result;
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Result.X = A * B.X;
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Result.Y = A * B.Y;
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return Result;
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}
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struct v2 V2Unary(struct v2 A)
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{
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struct v2 Result;
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Result.X = -A.X;
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Result.Y = -A.Y;
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return Result;
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}
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struct v2 V2Add(struct v2 A, struct v2 B)
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{
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struct v2 Result;
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Result.X = A.X + B.X;
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Result.Y = A.Y + B.Y;
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return Result;
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}
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struct v2 V2Subtract(struct v2 A, struct v2 B)
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{
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struct v2 Result;
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Result.X = A.X - B.X;
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Result.Y = A.Y - B.Y;
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return Result;
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}
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float Square(float A)
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{
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float Result;
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Result = A * A;
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return Result;
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}
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float InnerProduct(struct v2 A, struct v2 B)
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{
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float Result = A.X*B.X + A.Y*B.Y;
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return Result;
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}
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float LengthSq(struct v2 A)
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{
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float Result = InnerProduct(A, A);
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return Result;
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}
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#endif
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