33 lines
944 B
C++
33 lines
944 B
C++
// Copyright (c) 2012-2024 Wojciech Figat. All rights reserved.
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#include "Ray.h"
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#include "Matrix.h"
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#include "Viewport.h"
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#include "../Types/String.h"
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Ray Ray::Identity(Vector3(0, 0, 0), Vector3(0, 0, 1.0f));
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String Ray::ToString() const
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{
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return String::Format(TEXT("{}"), *this);
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}
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Vector3 Ray::GetPoint(Real distance) const
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{
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return Position + Direction * distance;
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}
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Ray Ray::GetPickRay(float x, float y, const Viewport& viewport, const Matrix& vp)
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{
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Vector3 nearPoint(x, y, 0.0f);
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Vector3 farPoint(x, y, 1.0f);
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nearPoint = Vector3::Unproject(nearPoint, viewport.X, viewport.Y, viewport.Width, viewport.Height, viewport.MinDepth, viewport.MaxDepth, vp);
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farPoint = Vector3::Unproject(farPoint, viewport.X, viewport.Y, viewport.Width, viewport.Height, viewport.MinDepth, viewport.MaxDepth, vp);
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Vector3 direction = farPoint - nearPoint;
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direction.Normalize();
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return Ray(nearPoint, direction);
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}
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