ProtoTracer  1.0
Real-time 3D rendering and animation engine
Loading...
Searching...
No Matches
TriangleGroupDeformer.cpp
Go to the documentation of this file.
1#include "TriangleGroupDeformer.h"
2
10
11TriangleGroupDeformer::TriangleGroupDeformer(ITriangleGroup** objects, int objectCount) {
12 this->objects = objects;
13 this->objectCount = objectCount;
14}
15
16bool TriangleGroupDeformer::CheckClipAxis(Vector3D base, bool positive, Axis valueCheckAxis) {
17 if (valueCheckAxis == XAxis && positive && base.X > 0) {
18 return true;
19 } else if (valueCheckAxis == XAxis && !positive && base.X < 0) {
20 return true;
21 } else if (valueCheckAxis == YAxis && positive && base.Y > 0) {
22 return true;
23 } else if (valueCheckAxis == YAxis && !positive && base.Y < 0) {
24 return true;
25 } else if (valueCheckAxis == ZAxis && positive && base.Z > 0) {
26 return true;
27 } else if (valueCheckAxis == ZAxis && !positive && base.Z < 0) {
28 return true;
29 } else {
30 return false;
31 }
32}
33
34void TriangleGroupDeformer::SinusoidalDeform(float magnitude, float timeRatio, float periodModifier, float frequencyModifier, Axis axis) {
35 for (int i = 0; i < objectCount; i++) {
36 for (int j = 0; j < objects[i]->GetVertexCount(); j++) {
37 Vector3D base = objects[i]->GetVertices()[j];
38
39 switch (axis) {
40 case XAxis:
41 objects[i]->GetVertices()[j].X = (sinf((base.Y) + timeRatio * frequencyModifier) * periodModifier + cosf((base.Z) + timeRatio * frequencyModifier) * periodModifier) * magnitude;
42 break;
43 case YAxis:
44 objects[i]->GetVertices()[j].Y = (sinf((base.X) + timeRatio * frequencyModifier) * periodModifier + cosf((base.Z) + timeRatio * frequencyModifier) * periodModifier) * magnitude;
45 break;
46 case ZAxis:
47 objects[i]->GetVertices()[j].Z = (sinf((base.X) + timeRatio * frequencyModifier) * periodModifier + cosf((base.Y) + timeRatio * frequencyModifier) * periodModifier) * magnitude;
48 break;
49 default:
50 break;
51 }
52 }
53 }
54}
55
56void TriangleGroupDeformer::DropwaveDeform(float magnitude, float timeRatio, float periodModifier, float frequencyModifier, Axis axis) {
57 for (int i = 0; i < objectCount; i++) {
58 for (int j = 0; j < objects[i]->GetVertexCount(); j++) {
59 Vector3D base = objects[i]->GetVertices()[j];
60
61 switch (axis) {
62 case XAxis:
63 objects[i]->GetVertices()[j].X = -(1.0f + cosf(12.0f * sqrt(base.Y * base.Y + base.Z + base.Z) + timeRatio * frequencyModifier) * periodModifier) / (0.5f * (base.Y * base.Y + base.Z + base.Z) + 2.0f) * magnitude;
64 break;
65 case YAxis:
66 objects[i]->GetVertices()[j].Y = -(1.0f + cosf(12.0f * sqrt(base.X * base.X + base.Z + base.Z) + timeRatio * frequencyModifier) * periodModifier) / (0.5f * (base.X * base.X + base.Z + base.Z) + 2.0f) * magnitude;
67 break;
68 case ZAxis:
69 objects[i]->GetVertices()[j].Z = -(1.0f + cosf(12.0f * sqrt(base.X * base.X + base.Y * base.Y) + timeRatio * frequencyModifier) * periodModifier) / (0.5f * (base.X * base.X + base.Y * base.Y) + 2.0f) * magnitude;
70 break;
71 default:
72 break;
73 }
74 }
75 }
76}
77
78void TriangleGroupDeformer::SineWaveSurfaceDeform(Vector3D offset, float magnitude, float timeRatio, float periodModifier, float frequencyModifier, Axis axis) {
79 for (int i = 0; i < objectCount; i++) {
80 for (int j = 0; j < objects[i]->GetVertexCount(); j++) {
81 Vector3D base = objects[i]->GetVertices()[j] - offset;
82
83 switch (axis) {
84 case XAxis:
85 objects[i]->GetVertices()[j].X = objects[i]->GetVertices()[j].X + sinf((sqrtf(base.Y * base.Y + base.Z * base.Z) + timeRatio * frequencyModifier) * periodModifier) * magnitude;
86 break;
87 case YAxis:
88 objects[i]->GetVertices()[j].Y = objects[i]->GetVertices()[j].Y + sinf((sqrtf(base.X * base.X + base.Z * base.Z) + timeRatio * frequencyModifier) * periodModifier) * magnitude;
89 break;
90 case ZAxis:
91 objects[i]->GetVertices()[j].Z = objects[i]->GetVertices()[j].Z + sinf((sqrtf(base.X * base.X + base.Y * base.Y) + timeRatio * frequencyModifier) * periodModifier) * magnitude;
92 break;
93 default:
94 break;
95 }
96 }
97 }
98}
99
100void TriangleGroupDeformer::CosineInterpolationDeformer(float* pointMultiplier, int points, float scale, float minAxis, float maxAxis, Axis selectionAxis, Axis deformAxis) {
101 for (int i = 0; i < objectCount; i++) {
102 for (int j = 0; j < objects[i]->GetVertexCount(); j++) {
103 float value;
104
105 switch (selectionAxis) {
106 case XAxis:
107 value = objects[i]->GetVertices()[j].X;
108 break;
109 case YAxis:
110 value = objects[i]->GetVertices()[j].Y;
111 break;
112 case ZAxis:
113 value = objects[i]->GetVertices()[j].Z;
114 break;
115 default:
116 value = 0.0f;
117 break;
118 }
119
120 float stepWindow = (maxAxis - minAxis) / points; // window size for the step interval
121
122 float roundUpWindow = Mathematics::RoundUpWindow(value, stepWindow);
123 float roundDownWindow = roundUpWindow - stepWindow;
124 int roundUpIndex = (roundUpWindow - minAxis) / stepWindow;
125
126 float intervalMultiplier, windowRatio;
127
128 if (roundUpIndex < 1) { // below range
129 intervalMultiplier = 1.0f; // Mathematics::CosineInterpolation(1.0f, pointMultiplier[0], windowRatio)
130 } else if (roundUpIndex > points) { // above range
131 intervalMultiplier = 1.0f; // Mathematics::CosineInterpolation(pointMultiplier[points - 1], 1.0f, windowRatio)
132 } else {
133 windowRatio = (value - roundDownWindow) / stepWindow;
134 intervalMultiplier = Mathematics::CosineInterpolation(pointMultiplier[roundUpIndex], pointMultiplier[roundUpIndex - 1], 1.0f - windowRatio);
135 }
136
137 // calculate where the axis fits on the range
138
139 switch (deformAxis) {
140 case XAxis:
141 objects[i]->GetVertices()[j].X = objects[i]->GetVertices()[j].X + scale * intervalMultiplier;
142 break;
143 case YAxis:
144 objects[i]->GetVertices()[j].Y = objects[i]->GetVertices()[j].Y + scale * intervalMultiplier;
145 break;
146 case ZAxis:
147 objects[i]->GetVertices()[j].Z = objects[i]->GetVertices()[j].Z + scale * intervalMultiplier;
148 break;
149 default:
150 break;
151 }
152 }
153 }
154}
155
156void TriangleGroupDeformer::AxisZeroClipping(bool positive, Axis clipAxis, Axis valueCheckAxis) {
157 for (int i = 0; i < objectCount; i++) {
158 for (int j = 0; j < objects[i]->GetVertexCount(); j++) {
159 Vector3D base = objects[i]->GetVertices()[j];
160
161 switch (clipAxis) {
162 case XAxis:
163 if (CheckClipAxis(base, positive, valueCheckAxis)) base.X = 0;
164 break;
165 case YAxis:
166 if (CheckClipAxis(base, positive, valueCheckAxis)) base.Y = 0;
167 break;
168 case ZAxis:
169 if (CheckClipAxis(base, positive, valueCheckAxis)) base.Z = 0;
170 break;
171 default:
172 break;
173 }
174 }
175 }
176}
TriangleGroupDeformer.h
Provides functionality to deform groups of 3D triangles in various ways.
ITriangleGroup
Interface for managing a dynamic group of 3D triangles and associated data.
Definition ITriangleGroup.h:23
ITriangleGroup::GetVertices
virtual Vector3D * GetVertices()=0
Retrieves the array of mutable vertices in the triangle group.
ITriangleGroup::GetVertexCount
virtual int GetVertexCount()=0
Retrieves the total number of vertices in the group.
Mathematics::RoundUpWindow
static int RoundUpWindow(int value, int multiple)
Rounds value up to the nearest multiple of multiple.
Definition Mathematics.cpp:119
Mathematics::CosineInterpolation
static float CosineInterpolation(float beg, float fin, float ratio)
Applies a cosine-based interpolation between two values.
Definition Mathematics.cpp:46
TriangleGroupDeformer::DropwaveDeform
void DropwaveDeform(float magnitude, float timeRatio, float periodModifier, float frequencyModifier, Axis axis)
Applies a dropwave deformation along a specified axis.
Definition TriangleGroupDeformer.cpp:56
TriangleGroupDeformer::SineWaveSurfaceDeform
void SineWaveSurfaceDeform(Vector3D offset, float magnitude, float timeRatio, float periodModifier, float frequencyModifier, Axis axis)
Applies a sine wave surface deformation along a specified axis.
Definition TriangleGroupDeformer.cpp:78
TriangleGroupDeformer::TriangleGroupDeformer
TriangleGroupDeformer(ITriangleGroup *object)
Constructor for a single triangle group.
Definition TriangleGroupDeformer.cpp:3
TriangleGroupDeformer::objects
ITriangleGroup ** objects
Array of triangle group objects to deform.
Definition TriangleGroupDeformer.h:38
TriangleGroupDeformer::CosineInterpolationDeformer
void CosineInterpolationDeformer(float *pointMultiplier, int points, float scale, float minAxis, float maxAxis, Axis selectionAxis, Axis deformAxis)
Applies a cosine interpolation deformation along a specified axis.
Definition TriangleGroupDeformer.cpp:100
TriangleGroupDeformer::AxisZeroClipping
void AxisZeroClipping(bool positive, Axis clipAxis, Axis valueCheckAxis)
Applies axis-aligned clipping to the triangles.
Definition TriangleGroupDeformer.cpp:156
TriangleGroupDeformer::CheckClipAxis
bool CheckClipAxis(Vector3D base, bool positive, Axis valueCheckAxis)
Checks if a given base position is clipped along a specific axis.
Definition TriangleGroupDeformer.cpp:16
TriangleGroupDeformer::SinusoidalDeform
void SinusoidalDeform(float magnitude, float timeRatio, float periodModifier, float frequencyModifier, Axis axis)
Applies a sinusoidal deformation along a specified axis.
Definition TriangleGroupDeformer.cpp:34
TriangleGroupDeformer::Axis
Axis
Defines the axes available for deformations and clipping.
Definition TriangleGroupDeformer.h:31
TriangleGroupDeformer::objectCount
int objectCount
Number of triangle group objects.
Definition TriangleGroupDeformer.h:39
Vector3D
Represents a 3D vector (X, Y, Z) and provides methods for vector arithmetic.
Definition Vector3D.h:26
Vector3D::Z
float Z
The Z-component of the 3D vector.
Definition Vector3D.h:30
Vector3D::X
float X
The X-component of the 3D vector.
Definition Vector3D.h:28
Vector3D::Y
float Y
The Y-component of the 3D vector.
Definition Vector3D.h:29