96 lines
3.0 KiB
C
96 lines
3.0 KiB
C
#ifndef CONSTS_H
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#define CONSTS_H
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#include "linalg/vec.h"
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#include <cmath>
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// --------------------------- Basic Constants ---------------------------
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const int INITIAL_WINDOW_WIDTH = 1200;
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const int INITIAL_WINDOW_HEIGHT = 900;
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const double epsilon = 1e-10f;
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const double infty = 1e15f; // This value is used to represent missing values in data
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// --------------------------- Dataset Constants ---------------------------
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// const int VOLUME_WIDTH = 576; // lon
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// const int VOLUME_WIDTH = 97; // lon
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const int VOLUME_WIDTH = 57; // lon
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// const int VOLUME_HEIGHT = 361; // lat
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// const int VOLUME_HEIGHT = 71; // lat
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const int VOLUME_HEIGHT = 121; // lat
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const int VOLUME_DEPTH = 42; // lev
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const float DLON = 35.0f / VOLUME_WIDTH; // 35 for current trimmed data set range
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const float DLAT = 60.0f / VOLUME_HEIGHT; // 60 for current trimmed data set range
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const float DLEV = 1000.0f / VOLUME_DEPTH; // 1000 from max pressure (hPa) but not sure here
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const float MIN_TEMP = 210.0f;
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const float MAX_TEMP = 293.0f;
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const float MIN_SPEED = 0.0F;
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const float MAX_SPEED = 14.0f;
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// --------------------------- Raycasting Constants ---------------------------
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const float minAllowedDensity = 0.001f;
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const float stepSize = 0.02f;
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// --------------------------- Illumination Constants ---------------------------
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// Shading consts
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const double ambientStrength = 0.3;
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const double diffuseStrength = 0.8;
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const double specularStrength = 0.5;
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const int shininess = 32;
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const float fov = 60.0f * (M_PI / 180.0f);
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// Camera and Light
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extern __device__ Point3 d_cameraPos;
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extern __device__ Vec3 d_cameraDir;
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extern __device__ Vec3 d_cameraUp;
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extern __device__ Point3 d_lightPos;
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// Background color
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extern __device__ Color3 d_backgroundColor;
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// --------------------------- Transfer Function Constants ---------------------------
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struct ColorStop {
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float pos; // in [0,1]
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Color3 color;
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};
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// factor for the gradient opacity function
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extern __device__ float d_opacityK;
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// sigmoid function variables
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extern __device__ float d_sigmoidShift;
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extern __device__ float d_sigmoidExp;
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// alpha accumulation limit
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extern __device__ float d_alphaAcumLimit;
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// combo box index
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extern __device__ int d_tfComboSelected;
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extern __device__ int d_tfComboSelectedColor;
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// constant opacity option
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extern __device__ float d_opacityConst;
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// samples per pixel
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extern __device__ int d_samplesPerPixel;
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// Silhouettes
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extern __device__ bool d_showSilhouettes;
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extern __device__ float d_silhouettesThreshold;
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// controlling levoy opacity function
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extern __device__ float d_levoyFocus;
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extern __device__ float d_levoyWidth;
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const int lenStopsPythonLike = 5;
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const int lenStopsGrayscale = 2;
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const int lenStopsBluePurpleRed = 3;
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extern __constant__ ColorStop d_stopsPythonLike[5];
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extern __constant__ ColorStop d_stopsGrayscale[2];
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extern __constant__ ColorStop d_stopsBluePurleRed[3];
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// --------------------------- Functions for handling external constants ---------------------------
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void copyConstantsToDevice();
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#endif // CONSTS_H
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