mirror of
https://git.coom.tech/drummyfish/raycastlib.git
synced 2024-11-22 20:39:57 +01:00
396 lines
7.6 KiB
C
396 lines
7.6 KiB
C
/**
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Tests for raycastlib.
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license: CC0
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*/
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#define RCL_PROFILE
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#define RCL_HORIZONTAL_FOV RCL_UNITS_PER_SQUARE / 2
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#define RCL_PIXEL_FUNCTION pixelFunc
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#include <stdio.h>
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#include "../raycastlib.h"
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#include <sys/time.h>
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RCL_Unit testArrayFunc(int16_t x, int16_t y)
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{
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if (x > 12 || y > 12)
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return x * y * RCL_UNITS_PER_SQUARE;
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return (x < 0 || y < 0 || x > 9 || y > 9) ? RCL_UNITS_PER_SQUARE : 0;
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}
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RCL_Unit testArrayFunc2(int16_t x, int16_t y)
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{
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return testArrayFunc(x,y) + 10 * RCL_UNITS_PER_SQUARE;
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}
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/**
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Simple automatic test function.
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*/
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int testSingleRay(RCL_Unit startX, RCL_Unit startY, RCL_Unit dirX, RCL_Unit dirY,
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int16_t expectSquareX, int16_t expectSquareY, int16_t expectPointX,
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int16_t expectPointY, int16_t tolerateError)
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{
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RCL_Ray r;
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r.start.x = startX;
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r.start.y = startY;
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r.direction.x = dirX;
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r.direction.y = dirY;
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printf("- casting ray:\n");
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RCL_logRay(r);
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RCL_HitResult h = RCL_castRay(r,testArrayFunc);
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printf("- result:\n");
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RCL_logHitResult(h);
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int result =
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h.square.x == expectSquareX &&
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h.square.y == expectSquareY &&
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h.position.x <= expectPointX + tolerateError &&
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h.position.x >= expectPointX - tolerateError &&
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h.position.y <= expectPointY + tolerateError &&
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h.position.y >= expectPointY - tolerateError;
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if (result)
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printf("\nOK\n\n");
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else
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printf("\nFAIL\n\n");
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return result;
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}
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int testSingleMapping(RCL_Unit posX, RCL_Unit posY, RCL_Unit posZ, uint32_t resX,
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uint32_t resY, RCL_Unit camX, RCL_Unit camY, RCL_Unit camZ, RCL_Unit camDir,
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RCL_Unit expectX, RCL_Unit expectY, RCL_Unit expectZ)
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{
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int result;
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RCL_Camera c;
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c.resolution.x = resX;
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c.resolution.y = resY;
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c.position.x = camX;
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c.position.y = camY;
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c.direction = camDir;
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c.height = camZ;
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RCL_Vector2D pos;
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RCL_Unit height;
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pos.x = posX;
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pos.y = posY;
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height = posZ;
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RCL_PixelInfo p;
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printf("- mapping pixel: %d %d %d\n",posX,posY,posZ);
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p = RCL_mapToScreen(pos,height,c);
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printf("- result:\n");
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RCL_logPixelInfo(p);
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result = p.position.x == expectX && p.position.y == expectY &&
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p.depth == expectZ;
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if (result)
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printf("\nOK\n\n");
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else
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printf("\nFAIL\n\n");
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return result;
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}
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// returns milliseconds
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long measureTime(void (*func)(void))
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{
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long start, end;
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struct timeval timecheck;
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gettimeofday(&timecheck, NULL);
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start = (long) timecheck.tv_sec * 1000 + (long) timecheck.tv_usec / 1000;
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func();
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gettimeofday(&timecheck, NULL);
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end = (long) timecheck.tv_sec * 1000 + (long) timecheck.tv_usec / 1000;
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return end - start;
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}
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void benchCastRays()
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{
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RCL_Ray r;
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r.start.x = RCL_UNITS_PER_SQUARE + RCL_UNITS_PER_SQUARE / 2;
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r.start.y = 2 * RCL_UNITS_PER_SQUARE + RCL_UNITS_PER_SQUARE / 4;
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RCL_Vector2D directions[8];
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for (int i = 0; i < 8; ++i)
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directions[i] = RCL_angleToDirection(RCL_UNITS_PER_SQUARE / 8 * i);
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for (int i = 0; i < 1000000; ++i)
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{
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r.direction = directions[i % 8];
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RCL_castRay(r,testArrayFunc);
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}
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}
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void benchmarkMapping()
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{
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RCL_Camera c;
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c.resolution.x = 1024;
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c.resolution.y = 768;
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c.position.x = RCL_UNITS_PER_SQUARE / 2;
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c.position.y = RCL_UNITS_PER_SQUARE * 2;
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c.direction = RCL_UNITS_PER_SQUARE / 8;
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c.height = 0;
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RCL_PixelInfo p;
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RCL_Vector2D pos;
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RCL_Unit height;
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pos.x = -1024 * RCL_UNITS_PER_SQUARE;
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pos.y = -512 * RCL_UNITS_PER_SQUARE;
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height = 0;
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for (int i = 0; i < 1000000; ++i)
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{
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p = RCL_mapToScreen(pos,height,c);
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pos.x += 4;
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pos.y += 8;
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height = (height + 16) % 1024;
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}
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}
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int countPixels = 0;
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uint32_t *pixelCounts = 0;
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RCL_Camera countCamera;
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int countOK = 1;
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void pixelFunc(RCL_PixelInfo *p)
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{
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if (countPixels)
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{
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if (p->position.x >= countCamera.resolution.x || p->position.x < 0 ||
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p->position.y >= countCamera.resolution.y || p->position.y < 0)
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{
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printf("ERROR: writing pixel outside screen at %d %d!\n",
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p->position.x,p->position.y);
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countOK = 0;
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}
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else
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pixelCounts[p->position.y * countCamera.resolution.x + p->position.x]++;
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}
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}
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int testPixelCount(RCL_Unit camX, RCL_Unit camY, RCL_Unit camZ,
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RCL_Unit camDir, RCL_Unit camShear, uint16_t camResX, uint16_t camResY,
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int complexRender)
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{
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printf("Counting rendered pixels...\n");
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RCL_RayConstraints constraints;
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RCL_Camera c;
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RCL_initRayConstraints(&constraints);
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constraints.maxSteps = 32;
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RCL_initCamera(&c);
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c.position.x = camX;
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c.position.y = camY;
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c.direction = camDir;
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c.shear = camShear;
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c.height = camZ;
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c.resolution.x = camResX;
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c.resolution.y = camResY;
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uint32_t pixels[camResX * camResY];
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for (int32_t i = 0; i < camResX * camResY; ++i)
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pixels[i] = 0;
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pixelCounts = pixels;
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countCamera = c;
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countPixels = 1;
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countOK = 1;
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if (complexRender)
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RCL_renderComplex(c,testArrayFunc,testArrayFunc2,0,constraints);
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else
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RCL_renderSimple(c,testArrayFunc,0,0,constraints);
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for (uint32_t y = 0; y < camResY; ++y)
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for (uint32_t x = 0; x < camResX; ++x)
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{
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uint32_t index = y * camResX + x;
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if (pixels[index] != 1)
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{
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printf("ERROR: pixel at %d %d written %d times!\n",x,y,pixels[index]);
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countOK = 0;
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}
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}
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return countOK;
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}
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void benchmarkRender()
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{
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RCL_Camera c;
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c.resolution.x = 640;
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c.resolution.y = 300;
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c.position.x = 10;
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c.position.y = 12;
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c.direction = 100;
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c.height = 200;
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RCL_RayConstraints constraints;
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constraints.maxHits = 10;
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constraints.maxSteps = 12;
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countPixels = 0;
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for (int i = 0; i < 100; ++i)
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RCL_renderComplex(c,testArrayFunc,testArrayFunc2,0,constraints);
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}
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int main()
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{
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printf("Testing raycastlib.\n");
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if (!testSingleRay(
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3 * RCL_UNITS_PER_SQUARE + RCL_UNITS_PER_SQUARE / 2,
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4 * RCL_UNITS_PER_SQUARE + RCL_UNITS_PER_SQUARE / 2,
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100, 50,
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10, 7,
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10240, 7936,
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16))
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return 1;
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if (!testSingleRay(
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0,
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0,
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100, 100,
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9, 10,
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10240, 10240,
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16))
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return 1;
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if (!testSingleRay(
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400,
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6811,
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-629,805,
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-1, 7,
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-1, 7325,
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16))
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return 1;
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if (!testSingleRay(
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-4 * RCL_UNITS_PER_SQUARE - RCL_UNITS_PER_SQUARE / 2,
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7 * RCL_UNITS_PER_SQUARE + RCL_UNITS_PER_SQUARE / 3,
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100,-100,
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0, 2,
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1, 2900,
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16))
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return 1;
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printf("testing perspective scale...\n");
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for (RCL_Unit i = 1; i < 100; ++i)
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{
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RCL_Unit size = i * 3;
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RCL_Unit distance = i * 6 + 200;
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RCL_Unit scaled = RCL_perspectiveScale(size,distance);
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RCL_Unit distance2 = RCL_perspectiveScaleInverse(size,scaled);
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if (RCL_absVal(distance - distance2 > 2))
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printf("ERROR: distance: %d, distance inverse: %d\n",distance,distance2);
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}
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printf("OK\n");
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if (!testPixelCount(
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RCL_UNITS_PER_SQUARE / 2,
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RCL_UNITS_PER_SQUARE / 2,
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RCL_UNITS_PER_SQUARE / 2,
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0,
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0,
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128,
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64,
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1))
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return 1;
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if (!testPixelCount(
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3 * RCL_UNITS_PER_SQUARE + 100,
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4 * RCL_UNITS_PER_SQUARE + RCL_UNITS_PER_SQUARE / 3,
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RCL_UNITS_PER_SQUARE / 2,
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512,
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0,
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120,
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60,
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0))
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return 1;
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if (!testPixelCount(
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- RCL_UNITS_PER_SQUARE,
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0,
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300,
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-600,
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-120,
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64,
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68,
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1))
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return 1;
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printf("OK\n");
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/*
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if (!testSingleMapping(
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-RCL_UNITS_PER_SQUARE,
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0,
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RCL_UNITS_PER_SQUARE / 2,
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1280,
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640,
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0,
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0,
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0,
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RCL_UNITS_PER_SQUARE / 2,
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640,
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0,
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1024
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))
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return -1;
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*/
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printf("benchmark:\n");
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long t;
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t = measureTime(benchCastRays);
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printf("cast 1000000 rays: %ld ms\n",t);
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t = measureTime(benchmarkMapping);
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printf("map point to screen 1000000 times: %ld ms\n",t);
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t = measureTime(benchmarkRender);
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printf("render 100 times: %ld ms\n",t);
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printf("\n");
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printProfile();
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return 0;
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}
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