From 5bedca7692490914ad2545767a6f1aa1fd46f386 Mon Sep 17 00:00:00 2001 From: aap Date: Mon, 20 Jul 2020 23:25:04 +0200 Subject: fixed COcclusion --- src/render/Occlusion.cpp | 116 ++++++++++++++++++++++++++--------------------- src/render/Occlusion.h | 7 ++- 2 files changed, 70 insertions(+), 53 deletions(-) (limited to 'src/render') diff --git a/src/render/Occlusion.cpp b/src/render/Occlusion.cpp index b31cc11e..c2f220e9 100644 --- a/src/render/Occlusion.cpp +++ b/src/render/Occlusion.cpp @@ -1,5 +1,6 @@ #include "common.h" +#include "main.h" #include "Occlusion.h" #include "Game.h" #include "Camera.h" @@ -28,7 +29,7 @@ bool gOccluderCoorsValid[8]; CVector gOccluderCoorsOnScreen[8]; CVector gOccluderCoors[8]; -bool bDisplayOccDebugStuff = false; +bool bDisplayOccDebugStuff; void COcclusion::Init(void) @@ -55,7 +56,7 @@ COcclusion::AddOne(float x, float y, float z, float width, float length, float h aOccluders[NumOccludersOnMap].height = height; while(angle < 0.0f) angle += 360.0f; while(angle > 360.0f) angle -= 360.0f; - aOccluders[NumOccludersOnMap].angle = angle * UINT16_MAX/360.0f; + aOccluders[NumOccludersOnMap].angle = angle/360.0f * UINT16_MAX; aOccluders[NumOccludersOnMap].listIndex = FarAwayList; FarAwayList = NumOccludersOnMap++; } @@ -68,19 +69,19 @@ COccluder::NearCamera() { bool DoesInfiniteLineCrossFiniteLine(float p1X, float p1Y, float p2X, float p2Y, float lineX, float lineY, float lineDX, float lineDY) { - float side1 = (p1X - lineX) * lineDX - (p1Y - lineY) * lineDY; - float side2 = (p2X - lineX) * lineDX - (p2Y - lineY) * lineDY; + float side1 = (p1X - lineX) * lineDY - (p1Y - lineY) * lineDX; + float side2 = (p2X - lineX) * lineDY - (p2Y - lineY) * lineDX; return side1 * side2 < 0.0f; // if points lie on opposite sides of the infinte line, the line between them crosses it } -bool DoesInfiniteLineTouchScreen(float p1X, float p1Y, float p2X, float p2Y) { - if (p1X > 0.0f && p1Y > 0.0f && SCREEN_WIDTH > p1X && SCREEN_HEIGHT > p1Y) +bool DoesInfiniteLineTouchScreen(float lineX, float lineY, float lineDX, float lineDY) { + if (lineX > 0.0f && lineY > 0.0f && SCREEN_WIDTH > lineX && SCREEN_HEIGHT > lineY) return true; - return (DoesInfiniteLineCrossFiniteLine(0.0f, 0.0f, SCREEN_WIDTH, 0.0f, p1X, p1Y, p2X, p2Y) || - DoesInfiniteLineCrossFiniteLine(0.0f, 0.0f, 0.0f, SCREEN_HEIGHT, p1X, p1Y, p2X, p2Y) || - DoesInfiniteLineCrossFiniteLine(SCREEN_WIDTH, 0.0f, SCREEN_WIDTH, SCREEN_HEIGHT, p1X, p1Y, p2X, p2Y) || - DoesInfiniteLineCrossFiniteLine(0.0f, SCREEN_HEIGHT, SCREEN_WIDTH, SCREEN_HEIGHT, p1X, p1Y, p2X, p2Y)); + return (DoesInfiniteLineCrossFiniteLine(0.0f, 0.0f, SCREEN_WIDTH, 0.0f, lineX, lineY, lineDX, lineDY) || + DoesInfiniteLineCrossFiniteLine(0.0f, 0.0f, 0.0f, SCREEN_HEIGHT, lineX, lineY, lineDX, lineDY) || + DoesInfiniteLineCrossFiniteLine(SCREEN_WIDTH, 0.0f, SCREEN_WIDTH, SCREEN_HEIGHT, lineX, lineY, lineDX, lineDY) || + DoesInfiniteLineCrossFiniteLine(0.0f, SCREEN_HEIGHT, SCREEN_WIDTH, SCREEN_HEIGHT, lineX, lineY, lineDX, lineDY)); } bool IsPointInsideLine(float lineX, float lineY, float lineDX, float lineDY, float pX, float pY, float area = 0.0f) { @@ -123,18 +124,18 @@ COccluder::ProcessLineSegment(int corner1, int corner2, CActiveOccluder *occl) { float x1, y1, x2, y2; - CVector origin3d, direction3d; + CVector p1, p2; if (!gOccluderCoorsValid[corner1]) { float clipDist1 = Abs((TheCamera.m_viewMatrix * gOccluderCoors[corner1]).z - 1.1f); float clipDist2 = Abs((TheCamera.m_viewMatrix * gOccluderCoors[corner2]).z - 1.1f); float ratio = clipDist2 / (clipDist1 + clipDist2); CVector clippedCoors = (1.0f - ratio) * gOccluderCoors[corner2] + ratio * gOccluderCoors[corner1]; - if (!CalcScreenCoors(clippedCoors, &origin3d, &x1, &y1)) + if (!CalcScreenCoors(clippedCoors, &p1, &x1, &y1)) return true; } else { - origin3d = gOccluderCoorsOnScreen[corner1]; + p1 = gOccluderCoorsOnScreen[corner1]; } if (!gOccluderCoorsValid[corner2]) { @@ -143,21 +144,22 @@ COccluder::ProcessLineSegment(int corner1, int corner2, CActiveOccluder *occl) { float ratio = clipDist1 / (clipDist1 + clipDist2); CVector clippedCoors = (1.0f - ratio) * gOccluderCoors[corner2] + ratio * gOccluderCoors[corner1]; - if (!CalcScreenCoors(clippedCoors, &direction3d, &x2, &y2)) + if (!CalcScreenCoors(clippedCoors, &p2, &x2, &y2)) return true; } else { - direction3d = gOccluderCoorsOnScreen[corner2]; + p2 = gOccluderCoorsOnScreen[corner2]; } - gMinXInOccluder = Min(Min(gMinXInOccluder, origin3d.x), direction3d.x); - gMaxXInOccluder = Max(Max(gMaxXInOccluder, origin3d.x), direction3d.x); - gMinYInOccluder = Min(Min(gMinYInOccluder, origin3d.y), direction3d.y); - gMaxYInOccluder = Max(Max(gMaxYInOccluder, origin3d.y), direction3d.y); + gMinXInOccluder = Min(Min(gMinXInOccluder, p1.x), p2.x); + gMaxXInOccluder = Max(Max(gMaxXInOccluder, p1.x), p2.x); + gMinYInOccluder = Min(Min(gMinYInOccluder, p1.y), p2.y); + gMaxYInOccluder = Max(Max(gMaxYInOccluder, p1.y), p2.y); - CVector2D origin = (CVector2D)origin3d; - CVector2D direction = (CVector2D)direction3d - origin; + CVector2D origin = p1; + CVector2D direction = p2 - p1; + // Make sure lines are counter-clockwise around center if (!IsPointInsideLine(origin.x, origin.y, direction.x, direction.y, gCenterOnScreen.x, gCenterOnScreen.y, 0.0f)) { origin += direction; direction *= -1.0f; @@ -192,22 +194,23 @@ COccluder::ProcessOneOccluder(CActiveOccluder *occl) { CVector vec[3]; - vec[0].x = width / 2.0f * Sin(angle / 63556.0f*TWOPI); - vec[0].y = -width / 2.0f * Cos(angle / 63556.0f*TWOPI); + vec[0].x = length / 2.0f * Sin(GetAngle()); + vec[0].y = -length / 2.0f * Cos(GetAngle()); vec[0].z = 0.0f; - vec[1].x = length / 2.0f * Cos(angle / 63556.0f*TWOPI); - vec[1].y = length / 2.0f * Sin(angle / 63556.0f*TWOPI); + vec[1].x = width / 2.0f * Cos(GetAngle()); + vec[1].y = width / 2.0f * Sin(GetAngle()); vec[1].z = 0.0f; vec[2].x = 0.0f; vec[2].y = 0.0f; vec[2].z = height / 2.0f; - bool aChecks[6]; int counter = -1; + // Figure out if we see the front or back of a face + bool bFrontFace[6]; for (int i = 0; i < 3; i++) { - aChecks[++counter] = DotProduct((pos + vec[i] - TheCamera.GetPosition()), vec[i]) < 0.0f; - aChecks[++counter] = DotProduct((pos - vec[i] - TheCamera.GetPosition()), -vec[i]) < 0.0f; + bFrontFace[i*2+0] = DotProduct((pos + vec[i] - TheCamera.GetPosition()), vec[i]) < 0.0f; + bFrontFace[i*2+1] = DotProduct((pos - vec[i] - TheCamera.GetPosition()), -vec[i]) < 0.0f; } //calculating vertices of a box @@ -228,31 +231,32 @@ COccluder::ProcessOneOccluder(CActiveOccluder *occl) { gMaxYInOccluder = -999999.875f; gMaxXInOccluder = -999999.875f; - if (aChecks[2] != aChecks[0] && ProcessLineSegment(0, 4, occl)) + // Between two differently facing sides we see an edge, so process those + if (bFrontFace[2] != bFrontFace[0] && ProcessLineSegment(0, 4, occl)) return false; - if (aChecks[3] != aChecks[0] && ProcessLineSegment(2, 6, occl)) + if (bFrontFace[3] != bFrontFace[0] && ProcessLineSegment(2, 6, occl)) return false; - if (aChecks[4] != aChecks[0] && ProcessLineSegment(0, 2, occl)) + if (bFrontFace[4] != bFrontFace[0] && ProcessLineSegment(0, 2, occl)) return false; - if (aChecks[5] != aChecks[0] && ProcessLineSegment(4, 6, occl)) + if (bFrontFace[5] != bFrontFace[0] && ProcessLineSegment(4, 6, occl)) return false; - if (aChecks[2] != aChecks[1] && ProcessLineSegment(1, 5, occl)) + if (bFrontFace[2] != bFrontFace[1] && ProcessLineSegment(1, 5, occl)) return false; - if (aChecks[3] != aChecks[1] && ProcessLineSegment(3, 7, occl)) + if (bFrontFace[3] != bFrontFace[1] && ProcessLineSegment(3, 7, occl)) return false; - if (aChecks[4] != aChecks[1] && ProcessLineSegment(1, 3, occl)) + if (bFrontFace[4] != bFrontFace[1] && ProcessLineSegment(1, 3, occl)) return false; - if (aChecks[5] != aChecks[1] && ProcessLineSegment(5, 7, occl)) + if (bFrontFace[5] != bFrontFace[1] && ProcessLineSegment(5, 7, occl)) return false; - if (aChecks[4] != aChecks[2] && ProcessLineSegment(0, 1, occl)) + if (bFrontFace[4] != bFrontFace[2] && ProcessLineSegment(0, 1, occl)) return false; - if (aChecks[3] != aChecks[4] && ProcessLineSegment(2, 3, occl)) + if (bFrontFace[3] != bFrontFace[4] && ProcessLineSegment(2, 3, occl)) return false; - if (aChecks[5] != aChecks[3] && ProcessLineSegment(6, 7, occl)) + if (bFrontFace[5] != bFrontFace[3] && ProcessLineSegment(6, 7, occl)) return false; - if (aChecks[2] != aChecks[5] && ProcessLineSegment(4, 5, occl)) + if (bFrontFace[2] != bFrontFace[5] && ProcessLineSegment(4, 5, occl)) return false; - + if (gMaxXInOccluder - gMinXInOccluder < SCREEN_WIDTH * 0.1f || gMaxYInOccluder - gMinYInOccluder < SCREEN_HEIGHT * 0.07f) return false; @@ -346,18 +350,18 @@ COcclusion::ProcessBeforeRendering(void) } } - //printf("NumActiveOccluders = %d\n", NumActiveOccluders); - for (i = 0; i < NumActiveOccluders; i++) { for (int j = 0; j < NumActiveOccluders; j++) { - if (i != j || aActiveOccluders[j].radius < aActiveOccluders[i].radius) { + if (i != j && aActiveOccluders[j].radius < aActiveOccluders[i].radius) { if (OccluderHidesBehind(&aActiveOccluders[i], &aActiveOccluders[j])) { for (int k = i; k < NumActiveOccluders - 1; k++) { - for (int l = 0; l < aActiveOccluders[k].linesCount; l++) + for (int l = 0; l < aActiveOccluders[k + 1].linesCount; l++) aActiveOccluders[k].lines[l] = aActiveOccluders[k + 1].lines[l]; aActiveOccluders[k].linesCount = aActiveOccluders[k + 1].linesCount; aActiveOccluders[k].radius = aActiveOccluders[k + 1].radius; } + NumActiveOccluders--; + i--; } } } @@ -374,7 +378,6 @@ bool CActiveOccluder::IsPointWithinOcclusionArea(float pX, float pY, float area) } bool COcclusion::IsAABoxOccluded(CVector pos, float width, float length, float height) { - return false; CVector coors; float outW, outH; @@ -415,7 +418,6 @@ bool COcclusion::IsAABoxOccluded(CVector pos, float width, float length, float h } bool COcclusion::IsPositionOccluded(CVector pos, float side) { - return false; CVector coors; float width, height; @@ -434,6 +436,10 @@ bool COcclusion::IsPositionOccluded(CVector pos, float side) { return false; } +#include "Lines.h" + +RwIm2DVertex vertexbufferT[2]; + void COcclusion::Render() { if (!bDisplayOccDebugStuff || !(CTimer::GetTimeInMilliseconds() & 0x200)) return; @@ -445,15 +451,23 @@ void COcclusion::Render() { RwRenderStateSet(rwRENDERSTATEDESTBLEND, (void*)rwBLENDONE); RwRenderStateSet(rwRENDERSTATETEXTURERASTER, FALSE); + float recipz = 1.0f/RwCameraGetNearClipPlane(Scene.camera); for (int i = 0; i < NumActiveOccluders; i++) { for (int j = 0; j < aActiveOccluders[i].linesCount; j++) { - RwIm2DVertex vertexbufferT[2]; RwIm2DVertexSetScreenX(&vertexbufferT[0], aActiveOccluders[i].lines[j].origin.x); RwIm2DVertexSetScreenY(&vertexbufferT[0], aActiveOccluders[i].lines[j].origin.y); - RwIm2DVertexSetScreenX(&vertexbufferT[1], + RwIm2DVertexSetScreenZ(&vertexbufferT[0], RwIm2DGetNearScreenZ()); + RwIm2DVertexSetCameraZ(&vertexbufferT[0], RwCameraGetNearClipPlane(Scene.camera)); + RwIm2DVertexSetRecipCameraZ(&vertexbufferT[0], recipz); + + RwIm2DVertexSetScreenX(&vertexbufferT[1], aActiveOccluders[i].lines[j].origin.x + aActiveOccluders[i].lines[j].direction.x * aActiveOccluders[i].lines[j].length); - RwIm2DVertexSetScreenY(&vertexbufferT[1], + RwIm2DVertexSetScreenY(&vertexbufferT[1], aActiveOccluders[i].lines[j].origin.y + aActiveOccluders[i].lines[j].direction.y * aActiveOccluders[i].lines[j].length); + RwIm2DVertexSetScreenZ(&vertexbufferT[1], RwIm2DGetNearScreenZ()); + RwIm2DVertexSetCameraZ(&vertexbufferT[1], RwCameraGetNearClipPlane(Scene.camera)); + RwIm2DVertexSetRecipCameraZ(&vertexbufferT[1], recipz); + RwIm2DVertexSetIntRGBA(&vertexbufferT[0], 255, 255, 0, 255); RwIm2DVertexSetIntRGBA(&vertexbufferT[1], 255, 255, 0, 255); RwIm2DRenderLine(vertexbufferT, 2, 0, 1); @@ -461,4 +475,4 @@ void COcclusion::Render() { } DefinedState(); -} \ No newline at end of file +} diff --git a/src/render/Occlusion.h b/src/render/Occlusion.h index 9b7ba34f..9a415f88 100644 --- a/src/render/Occlusion.h +++ b/src/render/Occlusion.h @@ -19,7 +19,7 @@ public: class COccluder { public: - int16 width, length, height; + int16 length, width, height; int16 x, y, z; uint16 angle; int16 listIndex; @@ -27,6 +27,7 @@ public: bool NearCamera(); bool ProcessOneOccluder(CActiveOccluder *occl); bool ProcessLineSegment(int corner1, int corner2, CActiveOccluder* occl); + float GetAngle(void) { return angle*TWOPI/UINT16_MAX; } }; class COcclusion @@ -52,4 +53,6 @@ public: }; bool CalcScreenCoors(CVector const &in, CVector *out, float *outw, float *outh); -bool CalcScreenCoors(CVector const &in, CVector *out); \ No newline at end of file +bool CalcScreenCoors(CVector const &in, CVector *out); + +extern bool bDisplayOccDebugStuff; -- cgit v1.2.3