67 lines
1.8 KiB
Java
67 lines
1.8 KiB
Java
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package renderSuite;
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import renderSuite.Vec3;
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import renderSuite.Ray;
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import java.awt.image.BufferedImage;
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import javax.imageio.ImageIO;
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import java.io.File;
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public class Camera {
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private Vec3 p, f;
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private double fov;
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private int sizeX, sizeY;
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public Camera(Vec3 position, Vec3 facing, double fov, int sizeX, int sizeY) {
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this.p = position;
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this.f = facing;
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this.fov = fov;
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this.sizeX = sizeX;
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this.sizeY = sizeY;
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}
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public void main() {
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}
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public void renderImageTo(String filename, Surface[] surfs) {
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BufferedImage bi = new BufferedImage(this.sizeX, this.sizeY, BufferedImage.TYPE_INT_RGB);
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for (int x = 0; x < this.sizeX; x++) {
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for (int y = 0; y < this.sizeY; y++) {
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Vec3 result = probe(x, y);
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int color = ( (int)result.x ) << 16 | ( (int)result.y ) << 8 | ( (int)result.z );
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bi.setRGB(x, y, color);
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}
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}
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File f = new File(filename + ".png");
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ImageIO.write(bi, "PNG", f);
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}
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public Vec3 probe(int x, int y) {
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Vec3 result = new Vec3(0, 0, 0);
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// creating ray to use as a probing object
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Ray ray = new Ray(this.p.copy(), this.f.copy().get_norm());
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// adjust ray facing
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double offsetX = ((x/this.sizeX) - 0.5) * 2;
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ray.rotate('y', offsetX * this.fov);
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double offsetY = ((y/this.sizeY) - 0.5) * 2;
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ray.rotate('x', offsetY * this.fov);
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// check collisions with every object on scene
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for (int i = 0; i < surfs.length; i++) {
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if (surfs[i].intersect(ray)) {
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return surfs[i].color;
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}
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}
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// if no collision detected, return black pixel
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return new Vec3(0, 0, 0);
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}
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}
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