101 lines
2.5 KiB
C
101 lines
2.5 KiB
C
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#include "atmosphere.h"
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#include "shared/functions.h"
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#include "shared/constants.h"
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#include "scenery.h"
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void atmosphereInit()
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{
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}
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void atmosphereSave(FILE* f, AtmosphereDefinition* definition)
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{
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toolsSaveDouble(f, definition->distance_near);
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toolsSaveDouble(f, definition->distance_far);
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toolsSaveDouble(f, definition->full_mask);
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toolsSaveInt(f, definition->auto_lock_on_haze);
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colorSave(definition->color, f);
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}
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void atmosphereLoad(FILE* f, AtmosphereDefinition* definition)
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{
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definition->distance_near = toolsLoadDouble(f);
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definition->distance_far = toolsLoadDouble(f);
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definition->full_mask = toolsLoadDouble(f);
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definition->auto_lock_on_haze = toolsLoadInt(f);
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definition->color = colorLoad(f);
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atmosphereValidateDefinition(definition);
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}
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AtmosphereDefinition atmosphereCreateDefinition()
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{
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AtmosphereDefinition definition;
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definition.distance_near = 0.0;
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definition.distance_far = 1.0;
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definition.full_mask = 0.0;
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definition.auto_lock_on_haze = 0;
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definition.color = COLOR_BLACK;
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atmosphereValidateDefinition(&definition);
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return definition;
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}
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void atmosphereDeleteDefinition(AtmosphereDefinition* definition)
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{
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}
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void atmosphereCopyDefinition(AtmosphereDefinition* source, AtmosphereDefinition* destination)
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{
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*destination = *source;
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}
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void atmosphereValidateDefinition(AtmosphereDefinition* definition)
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{
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SkyDefinition sky;
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if (definition->distance_far <= definition->distance_near)
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{
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definition->distance_far = definition->distance_near + 1.0;
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}
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if (definition->full_mask < 0.0)
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{
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definition->full_mask = 0.0;
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}
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if (definition->full_mask > 1.0)
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{
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definition->full_mask = 1.0;
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}
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if (definition->auto_lock_on_haze)
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{
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sky = skyCreateDefinition();
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sceneryGetSky(&sky);
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definition->color = colorGradationGet(&sky.haze_color, sky.daytime);
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skyDeleteDefinition(&sky);
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}
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}
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Color atmosphereApply(AtmosphereDefinition* definition, Renderer* renderer, Vector3 location, Color base)
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{
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Color mask = definition->color;
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double distance = v3Norm(v3Sub(renderer->camera_location, location));
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double value;
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if (distance < definition->distance_near)
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{
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return base;
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}
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else if (distance > definition->distance_far)
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{
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distance = definition->distance_far;
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}
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value = definition->full_mask * (distance - definition->distance_near) / (definition->distance_far - definition->distance_near);
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mask.a = value;
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colorMask(&base, &mask);
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return base;
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}
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