ProtoTracer  1.0
Real-time 3D rendering and animation engine
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ObjectDeformer.cpp
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1#include "ObjectDeformer.h"
2
3bool ObjectDeformer::CheckClipAxis(Vector3D base, bool positive, Axis valueCheckAxis){
4 if (valueCheckAxis == XAxis && positive && base.X > 0){
5 return true;
6 }
7 else if (valueCheckAxis == XAxis && !positive && base.X < 0){
8 return true;
9 }
10 else if (valueCheckAxis == YAxis && positive && base.Y > 0){
11 return true;
12 }
13 else if (valueCheckAxis == YAxis && !positive && base.Y < 0){
14 return true;
15 }
16 else if (valueCheckAxis == ZAxis && positive && base.Z > 0){
17 return true;
18 }
19 else if (valueCheckAxis == ZAxis && !positive && base.Z < 0){
20 return true;
21 }
22 else{
23 return false;
24 }
25}
26
27ObjectDeformer::ObjectDeformer(Object3D* object){
28 objects = new Object3D*[1];
29
30 objects[0] = object;
31
32 objectCount = 1;
33}
34
35ObjectDeformer::ObjectDeformer(Object3D** objects, int objectCount){
36 this->objects = objects;
37 this->objectCount = objectCount;
38}
39
40void ObjectDeformer::PerspectiveDeform(float scaleRatio, Vector3D center, Axis axis){//0.0f close, 1.0f uniform, infinite infinite
41 for(int i = 0; i < objectCount; i++){
42 for(int j = 0; j < objects[i]->GetTriangleGroup()->GetVertexCount(); j++){
43 switch(axis){
44 case XAxis:
45 objects[i]->GetTriangleGroup()->GetVertices()[j].Y = objects[i]->GetTriangleGroup()->GetVertices()[j].Y * (1.0f - (objects[i]->GetTriangleGroup()->GetVertices()[j].X + center.X) / scaleRatio);
46 objects[i]->GetTriangleGroup()->GetVertices()[j].Z = objects[i]->GetTriangleGroup()->GetVertices()[j].Z * (1.0f - (objects[i]->GetTriangleGroup()->GetVertices()[j].X + center.X) / scaleRatio);
47 break;
48 case YAxis:
49 objects[i]->GetTriangleGroup()->GetVertices()[j].X = objects[i]->GetTriangleGroup()->GetVertices()[j].X * (1.0f - (objects[i]->GetTriangleGroup()->GetVertices()[j].Y + center.Y) / scaleRatio);
50 objects[i]->GetTriangleGroup()->GetVertices()[j].Z = objects[i]->GetTriangleGroup()->GetVertices()[j].Z * (1.0f - (objects[i]->GetTriangleGroup()->GetVertices()[j].Y + center.Y) / scaleRatio);
51 break;
52 case ZAxis:
53 objects[i]->GetTriangleGroup()->GetVertices()[j].X = objects[i]->GetTriangleGroup()->GetVertices()[j].X * (1.0f - (objects[i]->GetTriangleGroup()->GetVertices()[j].Z + center.Z) / scaleRatio);
54 objects[i]->GetTriangleGroup()->GetVertices()[j].Y = objects[i]->GetTriangleGroup()->GetVertices()[j].Y * (1.0f - (objects[i]->GetTriangleGroup()->GetVertices()[j].Z + center.Z) / scaleRatio);
55 break;
56 default:
57 break;
58 }
59 }
60 }
61}
62
63void ObjectDeformer::SinusoidalDeform(float magnitude, float timeRatio, float periodModifier, float frequencyModifier, Axis axis){
64 for(int i = 0; i < objectCount; i++){
65 for(int j = 0; j < objects[i]->GetTriangleGroup()->GetVertexCount(); j++){
66 Vector3D base = objects[i]->GetTriangleGroup()->GetVertices()[j];
67
68 switch(axis){
69 case XAxis:
70 objects[i]->GetTriangleGroup()->GetVertices()[j].X = (sinf((base.Y) + timeRatio * frequencyModifier) * periodModifier + cosf((base.Z) + timeRatio * frequencyModifier) * periodModifier) * magnitude;
71 break;
72 case YAxis:
73 objects[i]->GetTriangleGroup()->GetVertices()[j].Y = (sinf((base.X) + timeRatio * frequencyModifier) * periodModifier + cosf((base.Z) + timeRatio * frequencyModifier) * periodModifier) * magnitude;
74 break;
75 case ZAxis:
76 objects[i]->GetTriangleGroup()->GetVertices()[j].Z = (sinf((base.X) + timeRatio * frequencyModifier) * periodModifier + cosf((base.Y) + timeRatio * frequencyModifier) * periodModifier) * magnitude;
77 break;
78 default:
79 break;
80 }
81 }
82 }
83}
84
85void ObjectDeformer::DropwaveDeform(float magnitude, float timeRatio, float periodModifier, float frequencyModifier, Axis axis){
86 for(int i = 0; i < objectCount; i++){
87 for(int j = 0; j < objects[i]->GetTriangleGroup()->GetVertexCount(); j++){
88 Vector3D base = objects[i]->GetTriangleGroup()->GetVertices()[j];
89
90 switch(axis){
91 case XAxis:
92 objects[i]->GetTriangleGroup()->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;
93 break;
94 case YAxis:
95 objects[i]->GetTriangleGroup()->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;
96 break;
97 case ZAxis:
98 objects[i]->GetTriangleGroup()->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;
99 break;
100 default:
101 break;
102 }
103 }
104 }
105}
106
107void ObjectDeformer::SineWaveSurfaceDeform(Vector3D offset, float magnitude, float timeRatio, float periodModifier, float frequencyModifier, Axis axis){
108 for(int i = 0; i < objectCount; i++){
109 for(int j = 0; j < objects[i]->GetTriangleGroup()->GetVertexCount(); j++){
110 Vector3D base = objects[i]->GetTriangleGroup()->GetVertices()[j] - offset;
111
112 switch(axis){
113 case XAxis:
114 objects[i]->GetTriangleGroup()->GetVertices()[j].X = objects[i]->GetTriangleGroup()->GetVertices()[j].X + sinf((sqrtf(base.Y * base.Y + base.Z * base.Z) + timeRatio * frequencyModifier) * periodModifier) * magnitude;
115 break;
116 case YAxis:
117 objects[i]->GetTriangleGroup()->GetVertices()[j].Y = objects[i]->GetTriangleGroup()->GetVertices()[j].Y + sinf((sqrtf(base.X * base.X + base.Z * base.Z) + timeRatio * frequencyModifier) * periodModifier) * magnitude;
118 break;
119 case ZAxis:
120 objects[i]->GetTriangleGroup()->GetVertices()[j].Z = objects[i]->GetTriangleGroup()->GetVertices()[j].Z + sinf((sqrtf(base.X * base.X + base.Y * base.Y) + timeRatio * frequencyModifier) * periodModifier) * magnitude;
121 break;
122 default:
123 break;
124 }
125 }
126 }
127}
128
129void ObjectDeformer::CosineInterpolationDeformer(float* pointMultiplier, int points, float scale, float minAxis, float maxAxis, Axis selectionAxis, Axis deformAxis){
130 //map axis offsets based on value range for multiplying vertex coordinates at set intervals spaced evenly across minimum and maximum range of selected axis
131 for(int i = 0; i < objectCount; i++){
132 for(int j = 0; j < objects[i]->GetTriangleGroup()->GetVertexCount(); j++){
133 float value;
134
135 switch(selectionAxis){
136 case XAxis:
137 value = objects[i]->GetTriangleGroup()->GetVertices()[j].X;
138 break;
139 case YAxis:
140 value = objects[i]->GetTriangleGroup()->GetVertices()[j].Y;
141 break;
142 case ZAxis:
143 value = objects[i]->GetTriangleGroup()->GetVertices()[j].Z;
144 break;
145 default:
146 value = 0.0f;
147 break;
148 }
149
150 float stepWindow = (maxAxis - minAxis) / points;//window size for the step interval
151
152 float roundUpWindow = Mathematics::RoundUpWindow(value, stepWindow);
153 float roundDownWindow = roundUpWindow - stepWindow;
154 int roundUpIndex = (roundUpWindow - minAxis) / stepWindow;
155
156 float intervalMultiplier, windowRatio;
157
158 if (roundUpIndex < 1){//below range
159 intervalMultiplier = 1.0f;// Mathematics::CosineInterpolation(1.0f, pointMultiplier[0], windowRatio)
160 }
161 else if (roundUpIndex > points){//above range
162 intervalMultiplier = 1.0f;// Mathematics::CosineInterpolation(pointMultiplier[points - 1], 1.0f, windowRatio)
163 }
164 else{
165 windowRatio = (value - roundDownWindow) / stepWindow;
166 intervalMultiplier = Mathematics::CosineInterpolation(pointMultiplier[roundUpIndex], pointMultiplier[roundUpIndex - 1], 1.0f - windowRatio);
167 }
168
169
170 //calculate where the axis fits on the range
171
172 switch(deformAxis){
173 case XAxis:
174 objects[i]->GetTriangleGroup()->GetVertices()[j].X = objects[i]->GetTriangleGroup()->GetVertices()[j].X + scale * intervalMultiplier;
175 break;
176 case YAxis:
177 objects[i]->GetTriangleGroup()->GetVertices()[j].Y = objects[i]->GetTriangleGroup()->GetVertices()[j].Y + scale * intervalMultiplier;
178 break;
179 case ZAxis:
180 objects[i]->GetTriangleGroup()->GetVertices()[j].Z = objects[i]->GetTriangleGroup()->GetVertices()[j].Z + scale * intervalMultiplier;
181 break;
182 default:
183 break;
184 }
185 }
186 }
187}
188
189void ObjectDeformer::AxisZeroClipping(bool positive, Axis clipAxis, Axis valueCheckAxis){
190 for(int i = 0; i < objectCount; i++){
191 for(int j = 0; j < objects[i]->GetTriangleGroup()->GetVertexCount(); j++){
192 Vector3D base = objects[i]->GetTriangleGroup()->GetVertices()[j];
193
194 switch(clipAxis){
195 case XAxis:
196 if(CheckClipAxis(base, positive, valueCheckAxis)) base.X = 0;
197 break;
198 case YAxis:
199 if(CheckClipAxis(base, positive, valueCheckAxis)) base.Y = 0;
200 break;
201 case ZAxis:
202 if(CheckClipAxis(base, positive, valueCheckAxis)) base.Z = 0;
203 break;
204 default:
205 break;
206 }
207 }
208 }
209}
ObjectDeformer.h
Defines the ObjectDeformer class for deforming 3D objects using various transformations.
ITriangleGroup::GetVertices
virtual Vector3D * GetVertices()=0
Retrieves the array of mutable vertices in the triangle 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
Object3D
Represents a 3D object with geometry, material, and transformation data.
Definition Object3D.h:28
Object3D::GetTriangleGroup
ITriangleGroup * GetTriangleGroup()
Retrieves the modifiable geometry of the object.
Definition Object3D.cpp:72
ObjectDeformer::objects
Object3D ** objects
Array of pointers to Object3D instances to be deformed.
Definition ObjectDeformer.h:38
ObjectDeformer::DropwaveDeform
void DropwaveDeform(float magnitude, float timeRatio, float periodModifier, float frequencyModifier, Axis axis)
Applies a dropwave deformation to the object(s).
Definition ObjectDeformer.cpp:85
ObjectDeformer::SineWaveSurfaceDeform
void SineWaveSurfaceDeform(Vector3D offset, float magnitude, float timeRatio, float periodModifier, float frequencyModifier, Axis axis)
Applies a sine wave surface deformation to the object(s).
Definition ObjectDeformer.cpp:107
ObjectDeformer::ObjectDeformer
ObjectDeformer(Object3D *object)
Constructs an ObjectDeformer for a single object.
Definition ObjectDeformer.cpp:27
ObjectDeformer::CosineInterpolationDeformer
void CosineInterpolationDeformer(float *pointMultiplier, int points, float scale, float minAxis, float maxAxis, Axis selectionAxis, Axis deformAxis)
Applies cosine interpolation deformation to the object(s).
Definition ObjectDeformer.cpp:129
ObjectDeformer::AxisZeroClipping
void AxisZeroClipping(bool positive, Axis clipAxis, Axis valueCheckAxis)
Clips the object(s) along a specified axis.
Definition ObjectDeformer.cpp:189
ObjectDeformer::CheckClipAxis
bool CheckClipAxis(Vector3D base, bool positive, Axis valueCheckAxis)
Checks if a given axis value exceeds a clipping threshold.
Definition ObjectDeformer.cpp:3
ObjectDeformer::SinusoidalDeform
void SinusoidalDeform(float magnitude, float timeRatio, float periodModifier, float frequencyModifier, Axis axis)
Applies a sinusoidal deformation to the object(s).
Definition ObjectDeformer.cpp:63
ObjectDeformer::PerspectiveDeform
void PerspectiveDeform(float scaleRatio, Vector3D center, Axis axis)
Applies a perspective deformation to the object(s).
Definition ObjectDeformer.cpp:40
ObjectDeformer::Axis
Axis
Represents the axis of deformation or clipping.
Definition ObjectDeformer.h:31
ObjectDeformer::objectCount
int objectCount
Number of objects in the objects array.
Definition ObjectDeformer.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