Michaël Lemaire
b6555f822c
git-svn-id: https://subversion.assembla.com/svn/thunderk/paysages@360 b1fd45b6-86a6-48da-8261-f70d1f35bdcc
120 lines
2.6 KiB
C++
120 lines
2.6 KiB
C++
#include "previewmaterial.h"
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#include <math.h>
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#include <QPainter>
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#include "tools.h"
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#include "../lib_paysages/lighting.h"
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#include "../lib_paysages/color.h"
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/***** Small static preview *****/
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SmallMaterialPreview::SmallMaterialPreview(QWidget* parent, SurfaceMaterial* material) : QWidget(parent)
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{
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LightDefinition light;
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_lighting = lightingCreateDefinition();
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light.color = COLOR_WHITE;
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light.direction.x = -0.5;
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light.direction.y = -0.5;
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light.direction.z = -0.5;
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light.direction = v3Normalize(light.direction);
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light.filtered = 0;
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light.masked = 0;
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light.reflection = 1.0;
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lightingAddLight(&_lighting, light);
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lightingValidateDefinition(&_lighting);
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_material = material;
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_renderer = rendererCreate();
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_renderer.camera_location.x = 0.0;
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_renderer.camera_location.x = 0.0;
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_renderer.camera_location.z = 10.0;
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}
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SmallMaterialPreview::~SmallMaterialPreview()
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{
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rendererDelete(&_renderer);
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}
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QColor SmallMaterialPreview::getColor(double x, double y)
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{
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double dist = sqrt(x * x + y * y);
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Vector3 point;
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Color color;
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if (dist >= 1.0)
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{
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return colorToQColor(COLOR_TRANSPARENT);
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}
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else
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{
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point.x = x;
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point.y = -y;
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if (dist == 0)
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{
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point.z = 1.0;
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}
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else
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{
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point.z = fabs(acos(dist));
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}
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point = v3Normalize(point);
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color = lightingApplyToSurface(&_lighting, &_renderer, point, point, *_material);
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if (dist > 0.95)
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{
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color.a = (1.0 - dist) / 0.05;
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}
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return colorToQColor(color);
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}
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}
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void SmallMaterialPreview::paintEvent(QPaintEvent* event)
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{
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QPainter painter(this);
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int width = this->width();
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int height = this->height();
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double factor, dx, dy;
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if (width > height)
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{
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factor = 2.0 / (double)height;
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}
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else
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{
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factor = 2.0 / (double)width;
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}
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dx = factor * (double)width / 2.0;
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dy = factor * (double)height / 2.0;
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for (int x = 0; x < width; x++)
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{
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for (int y = 0; y < height; y++)
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{
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painter.setPen(getColor((double)x * factor - dx, (double)y * factor - dy));
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painter.drawPoint(x, y);
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}
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}
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}
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/***** Large dynamic preview *****/
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PreviewMaterial::PreviewMaterial(QWidget* parent, SurfaceMaterial* material) : BasePreview(parent)
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{
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_small = new SmallMaterialPreview(this, material);
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_small->hide();
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configScaling(0.05, 2.0, 0.05, 2.0);
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}
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PreviewMaterial::~PreviewMaterial()
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{
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delete _small;
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}
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QColor PreviewMaterial::getColor(double x, double y)
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{
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return _small->getColor(x, y);
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}
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