91 lines
2.6 KiB
Arduino
91 lines
2.6 KiB
Arduino
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//A realtime raytraycer utilizing both cores of the ESP32. Please change the pin configuration in the setup if you are not using VGA v0.1 or the Black Edition shields.
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//cc by-sa 4.0 license
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//bitluni
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#include <ESP32Lib.h>
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#include <Ressources/Font6x8.h>
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#include <math.h>
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#include <Math/Matrix.h>
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#include "Raytracer.h"
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//VGA Device
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VGA14Bit vga;
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int taskData[2][3] =
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{
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{0, 0, 160},
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{0, 160, 320}
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};
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static Sphere sphere(Vector(0, 0.5f, 0), 1);
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static Sphere sphere2(Vector(1, 1.5f, 0.5), 0.5f);
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static Checker checker;
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static Raytracable *objects[] = {&sphere, &sphere2, &checker};
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static Vector light = Vector(5, 4, -5);
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void raytraceTask(void *param)
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{
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static Vector p(0, 1, -10);
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int *data = (int*)param;
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while(true)
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{
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while(!data[0]) delay(1);
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for(int y = 0; y < 200; y++)
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for(int x = data[1]; x < data[2]; x++)
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{
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Vector v(float(x - 160) * (1.f / 320), float(100 - y) * (1.f / 320), 1.f);
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v.normalize();
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Ray r(p, v);
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Vector c = raytrace(objects, 3, r, light, 3);
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vga.dotFast(x, y, vga.RGB(c[0] * 255, c[1] * 255, c[2] * 255));
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}
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data[0] = 0;
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}
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}
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//initial setup
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void setup()
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{
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//we need double buffering for smooth animations
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vga.setFrameBufferCount(2);
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//initializing i2s vga
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//Pin presets are avaialable for: VGAv01, VGABlackEdition, VGAWhiteEdition, PicoVGA
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//But you can also use custom pins. Check the other examples
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vga.init(vga.MODE320x200, vga.VGABlackEdition);
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//setting the font
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vga.setFont(Font6x8);
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light.normalize();
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sphere.reflection = 0.4f;
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sphere2.reflection = 0.5f;
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checker.reflection = 0.2f;
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sphere.c = Vector(0, 1, 0);
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sphere2.c = Vector(1, 0, 1);
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static uint8_t ucParameterToPass;
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TaskHandle_t xHandle = NULL;
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xTaskCreatePinnedToCore(raytraceTask, "Raytracer1", 2000, taskData[0], ( 2 | portPRIVILEGE_BIT ), &xHandle, 0);
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xTaskCreatePinnedToCore(raytraceTask, "Raytracer2", 2000, taskData[1], ( 2 | portPRIVILEGE_BIT ), &xHandle, 1);
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}
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//the loop is done every frame
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void loop()
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{
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taskData[0][0] = 1;
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taskData[1][0] = 1;
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//waiting for task to finish
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while(taskData[0][0] || taskData[1][0]) delay(1);
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sphere2.p.v[0] = sin(millis() * 0.0005f) * 2;
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sphere2.p.v[2] = cos(millis() * 0.0005f) * 2;
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sphere.p.v[1] = sphere2.p[0] * 0.3 + 1;
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//setting the text cursor to the lower left corner of the screen
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vga.setCursor(0, 0);
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//setting the text color to white with opaque black background
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vga.setTextColor(vga.RGB(0xffffff), vga.RGBA(0, 0, 0, 0));
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//printing the fps
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vga.print("ms/frame: ");
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static long t = 0;
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long ct = millis();
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vga.print(ct - t);
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t = ct;
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vga.show();
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}
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