[2798] | 1 | /* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */ |
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[1028] | 2 | /* |
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| 3 | * ---------------------------------------------------------------------- |
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| 4 | * Vector4.h: Vector4 class |
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| 5 | * |
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| 6 | * ====================================================================== |
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| 7 | * AUTHOR: Wei Qiao <qiaow@purdue.edu> |
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| 8 | * Purdue Rendering and Perceptualization Lab (PURPL) |
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| 9 | * |
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| 10 | * Copyright (c) 2004-2006 Purdue Research Foundation |
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| 11 | * |
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| 12 | * See the file "license.terms" for information on usage and |
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| 13 | * redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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| 14 | * ====================================================================== |
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| 15 | */ |
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[2827] | 16 | #ifndef VECTOR4_H |
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| 17 | #define VECTOR4_H |
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[1028] | 18 | |
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[2827] | 19 | #include <vector> |
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| 20 | |
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[2822] | 21 | #include "Trace.h" |
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[1028] | 22 | |
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| 23 | class Vector4 |
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| 24 | { |
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| 25 | public: |
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| 26 | float x, y, z, w; |
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| 27 | |
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[2822] | 28 | Vector4() |
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| 29 | {} |
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| 30 | |
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| 31 | Vector4(float x_val, float y_val, float z_val, float w_val) |
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| 32 | { |
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| 33 | set(x_val, y_val, z_val, w_val); |
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[1028] | 34 | } |
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[2822] | 35 | |
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| 36 | void set(float x_val, float y_val, float z_val, float w_val) |
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| 37 | { |
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| 38 | x = x_val, y = y_val, z = z_val, w = w_val; |
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[1028] | 39 | } |
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| 40 | |
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[2822] | 41 | void perspective_divide() |
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| 42 | { |
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| 43 | /* Divide vector by w */ |
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| 44 | x /= w, y /= w, z /= w, w = 1.; |
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[1028] | 45 | } |
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| 46 | |
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[2822] | 47 | void print() const |
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| 48 | { |
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| 49 | TRACE("Vector4: (%.3f, %.3f, %.3f, %.3f)\n", x, y, z, w); |
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[1028] | 50 | } |
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| 51 | |
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[2822] | 52 | Vector4 operator +(const Vector4& op2) const |
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| 53 | { |
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| 54 | return Vector4(x + op2.x, y + op2.y, z + op2.z, w + op2.w); |
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[1028] | 55 | } |
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| 56 | |
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[2822] | 57 | Vector4 operator -(const Vector4& op2) const |
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| 58 | { |
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| 59 | return Vector4(x - op2.x, y - op2.y, z - op2.z, w - op2.w); |
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[1028] | 60 | } |
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| 61 | |
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[2822] | 62 | float operator *(const Vector4& op2) const |
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| 63 | { |
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| 64 | return (x * op2.x) + (y * op2.y) + (z * op2.z) + (w * op2.w); |
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[1028] | 65 | } |
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| 66 | |
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[2822] | 67 | Vector4 operator *(float op2) const |
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| 68 | { |
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| 69 | return Vector4(x * op2, y * op2, z * op2, w * op2); |
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[1028] | 70 | } |
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| 71 | |
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[2822] | 72 | Vector4 operator /(float op2) const |
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| 73 | { |
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| 74 | return Vector4(x / op2, y / op2, z / op2, w / op2); |
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[1028] | 75 | } |
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| 76 | }; |
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| 77 | |
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[2827] | 78 | typedef std::vector<Vector4> Vector4Array; |
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| 79 | |
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[1028] | 80 | #endif |
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