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texture coordinate transformations added in PShape3D

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This commit is contained in:
codeanticode
2010-04-14 09:33:56 +00:00
parent 93dd4953a5
commit c2cd17fa58
1 changed files with 249 additions and 49 deletions
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android/core/src/processing/core/PShape3D.java
+249 -49
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@@ -707,18 +707,40 @@ public class PShape3D extends PShape implements PConstants {
float u = texCoordArray[2 * idx + 0];
float v = texCoordArray[2 * idx + 1];
if (a3d.imageMode == IMAGE) {
if (vertGroup[idx] != null && vertGroup[idx].texture == null) {
throw new RuntimeException("PShape3D: when setting texture coordinates in IMAGE mode, the textures need to be assigned first");
}
u *= vertGroup[idx].texture.width;
v *= vertGroup[idx].texture.height;
if (vertGroup[idx] != null && vertGroup[idx].texture != null) {
PTexture tex = vertGroup[idx].texture.getTexture();
float uscale = 1.0f;
float vscale = 1.0f;
float cx = 0.0f;
float sx = +1.0f;
float cy = 0.0f;
float sy = +1.0f;
if (tex.isFlippedX()) {
cx = 1.0f;
sx = -1.0f;
}
if (tex.isFlippedY()) {
cy = 1.0f;
sy = -1.0f;
}
uscale *= tex.getMaxTextureCoordS();
vscale *= tex.getMaxTextureCoordT();
// Inverting the texture coordinate transformation.
u = (u / uscale - cx) / sx;
v = (v / vscale - cy) / sy;
if (a3d.imageMode == IMAGE) {
u *= vertGroup[idx].texture.width;
v *= vertGroup[idx].texture.height;
}
}
PVector res = new PVector(u, v, 0);
return res;
}
public float[] getTexCoordArray() {
if (updateElement != TEXTURES) {
throw new RuntimeException("PShape3D: update mode is not set to TEXTURES");
@@ -729,22 +751,66 @@ public class PShape3D extends PShape implements PConstants {
PApplet.arrayCopy(texCoordArray, res);
if (a3d.imageMode == IMAGE) {
float u, v;
for (int i = 0; i < numVertices; i++) {
if (vertGroup[i] != null && vertGroup[i].texture == null) {
throw new RuntimeException("PShape3D: when setting texture coordinates in IMAGE mode, the textures need to be assigned first");
// The inversion of texture coordinates require looping through all the vertices,
// which is not needed if there are no texures assigned to the shape.
boolean textured = false;
for (int i = 0; i < vertGroup.length; i++) {
if (vertGroup[i].texture != null) {
textured = true;
break;
}
}
if (!textured) {
// No texturing, no further processing is required.
return res;
}
PImage img = null;
float uscale = 1.0f;
float vscale = 1.0f;
float cx = 0.0f;
float sx = +1.0f;
float cy = 0.0f;
float sy = +1.0f;
int w = 1;
int h = 1;
float u, v;
for (int i = 0; i < numVertices; i++) {
if (vertGroup[i] != null && vertGroup[i].texture != img) {
PTexture tex = vertGroup[i].texture.getTexture();
uscale = 1.0f;
vscale = 1.0f;
cx = 0.0f;
sx = +1.0f;
cy = 0.0f;
sy = +1.0f;
if (tex.isFlippedX()) {
cx = 1.0f;
sx = -1.0f;
}
if (tex.isFlippedY()) {
cy = 1.0f;
sy = -1.0f;
}
uscale *= tex.getMaxTextureCoordS();
vscale *= tex.getMaxTextureCoordT();
u = res[2 * i + 0];
v = res[2 * i + 1];
u *= vertGroup[i].texture.width;
v *= vertGroup[i].texture.height;
res[2 * i + 0] = u;
res[2 * i + 1] = v;
}
w = vertGroup[i].texture.width;
h = vertGroup[i].texture.height;
img = vertGroup[i].texture;
}
// Inverting the texture coordinate transformation.
u = (res[2 * i + 0] / uscale - cx) / sx;
v = (res[2 * i + 1] / vscale - cy) / sy;
if (a3d.imageMode == IMAGE) {
u *= w;
v *= h;
}
res[2 * i + 0] = u;
res[2 * i + 1] = v;
}
return res;
@@ -783,12 +849,43 @@ public class PShape3D extends PShape implements PConstants {
vertGroup[idx].texture = updateTexture;
}
if (a3d.imageMode == IMAGE) {
if (vertGroup[idx] != null && vertGroup[idx].texture == null) {
throw new RuntimeException("PShape3D: when setting texture coordinates in IMAGE mode, the textures need to be assigned first");
if (vertGroup[idx] != null && vertGroup[idx].texture != null) {
// Inverting the texture coordinate transformation.
PTexture tex = vertGroup[idx].texture.getTexture();
float uscale = 1.0f;
float vscale = 1.0f;
float cx = 0.0f;
float sx = +1.0f;
float cy = 0.0f;
float sy = +1.0f;
int w = vertGroup[idx].texture.width;
int h = vertGroup[idx].texture.height;
if (tex.isFlippedX()) {
cx = 1.0f;
sx = -1.0f;
}
u /= vertGroup[idx].texture.width;
v /= vertGroup[idx].texture.height;
if (tex.isFlippedY()) {
cy = 1.0f;
sy = -1.0f;
}
uscale *= tex.getMaxTextureCoordS();
vscale *= tex.getMaxTextureCoordT();
// Texture coordinate transformation.
u = (cx + sx * u) * uscale;
v = (cy + sy * v) * vscale;
if (a3d.imageMode == IMAGE) {
u /= w;
v /= h;
}
if (u < 0) v = 0;
else if (u > 1) u = 1;
if (v < 0) v = 0;
else if (v > 1) v = 1;
}
texCoordArray[2 * idx + 0] = u;
@@ -811,25 +908,73 @@ public class PShape3D extends PShape implements PConstants {
}
}
if (a3d.imageMode == IMAGE) {
float u, v;
for (int i = 0; i < numVertices; i++) {
if (vertGroup[i] != null && vertGroup[i].texture == null) {
throw new RuntimeException("PShape3D: when setting texture coordinates in IMAGE mode, the textures need to be assigned first");
}
u = data[2 * i + 0];
v = data[2 * i + 1];
u /= vertGroup[i].texture.width;
v /= vertGroup[i].texture.height;
texCoordArray[2 * i + 0] = u;
texCoordArray[2 * i + 1] = v;
}
} else {
// The transformation of texture coordinates require looping through all the vertices,
// which is not needed if there are no texures assigned to the shape.
boolean textured = false;
for (int i = 0; i < vertGroup.length; i++) {
if (vertGroup[i].texture != null) {
textured = true;
break;
}
}
if (!textured) {
// No texturing, no further processing is required.
PApplet.arrayCopy(data, texCoordArray);
}
PImage img = null;
float uscale = 1.0f;
float vscale = 1.0f;
float cx = 0.0f;
float sx = +1.0f;
float cy = 0.0f;
float sy = +1.0f;
int w = 1;
int h = 1;
float u, v;
for (int i = 0; i < numVertices; i++) {
if (vertGroup[i] != null && vertGroup[i].texture != img) {
PTexture tex = vertGroup[i].texture.getTexture();
uscale = 1.0f;
vscale = 1.0f;
cx = 0.0f;
sx = +1.0f;
cy = 0.0f;
sy = +1.0f;
w = vertGroup[i].texture.width;
h = vertGroup[i].texture.height;
if (tex.isFlippedX()) {
cx = 1.0f;
sx = -1.0f;
}
if (tex.isFlippedY()) {
cy = 1.0f;
sy = -1.0f;
}
uscale *= tex.getMaxTextureCoordS();
vscale *= tex.getMaxTextureCoordT();
img = vertGroup[i].texture;
}
// Texture coordinate transformation.
u = (cx + sx * data[2 * i + 0]) * uscale;
v = (cy + sy * data[2 * i + 1]) * vscale;
if (a3d.imageMode == IMAGE) {
u /= w;
v /= h;
}
if (u < 0) v = 0;
else if (u > 1) u = 1;
if (v < 0) v = 0;
else if (v > 1) v = 1;
texCoordArray[2 * i + 0] = u;
texCoordArray[2 * i + 1] = v;
}
}
@@ -848,16 +993,71 @@ public class PShape3D extends PShape implements PConstants {
}
}
// The transformation of texture coordinates require looping through all the vertices,
// which is not needed if there are no texures assigned to the shape.
boolean textured = false;
for (int i = 0; i < vertGroup.length; i++) {
if (vertGroup[i].texture != null) {
textured = true;
break;
}
}
PImage img = null;
float uscale = 1.0f;
float vscale = 1.0f;
float cx = 0.0f;
float sx = +1.0f;
float cy = 0.0f;
float sy = +1.0f;
int w = 1;
int h = 1;
float u, v;
PVector vec;
for (int i = 0; i < numVertices; i++) {
vec = (PVector)data.get(i);
if (vertGroup[i] != null && vertGroup[i].texture != img) {
PTexture tex = vertGroup[i].texture.getTexture();
if (a3d.imageMode == IMAGE) {
if (vertGroup[i] != null && vertGroup[i].texture == null) {
throw new RuntimeException("PShape3D: when setting texture coordinates in IMAGE mode, the textures need to be assigned first");
}
texCoordArray[2 * i + 0] = vec.x / vertGroup[i].texture.width;
texCoordArray[2 * i + 1] = vec.y / vertGroup[i].texture.height;
uscale = 1.0f;
vscale = 1.0f;
cx = 0.0f;
sx = +1.0f;
cy = 0.0f;
sy = +1.0f;
w = vertGroup[i].texture.width;
h = vertGroup[i].texture.height;
if (tex.isFlippedX()) {
cx = 1.0f;
sx = -1.0f;
}
if (tex.isFlippedY()) {
cy = 1.0f;
sy = -1.0f;
}
uscale *= tex.getMaxTextureCoordS();
vscale *= tex.getMaxTextureCoordT();
img = vertGroup[i].texture;
}
vec = (PVector)data.get(i);
if (textured) {
// Texture coordinate transformation.
u = (cx + sx * vec.x) * uscale;
v = (cy + sy * vec.y) * vscale;
if (a3d.imageMode == IMAGE) {
u /= w;
v /= h;
}
if (u < 0) v = 0;
else if (u > 1) u = 1;
if (v < 0) v = 0;
else if (v > 1) v = 1;
texCoordArray[2 * i + 0] = u;
texCoordArray[2 * i + 1] = v;
} else {
texCoordArray[2 * i + 0] = vec.x;
texCoordArray[2 * i + 1] = vec.y;