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getting polygons to work properly.. but not quite yet

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benfry
2005-02-28 00:32:38 +00:00
parent b5a7eda63f
commit 79de004742
3 changed files with 39 additions and 34 deletions
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58
core/PGraphics3.java
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@@ -855,21 +855,40 @@ public class PGraphics3 extends PGraphics {
// ------------------------------------------------------------------
// TRANSFORM / LIGHT / CLIP
light_and_transform();
handle_lighting();
// ------------------------------------------------------------------
// POINTS FROM VIEW SPACE (VX, VY, VZ) TO SCREEN SPACE (X, Y, Z)
for (int i = vertex_start; i < vertex_end; i++) {
float vx[] = vertices[i];
float ox = p00*vx[VX] + p01*vx[VY] + p02*vx[VZ] + p03*vx[VW];
float oy = p10*vx[VX] + p11*vx[VY] + p12*vx[VZ] + p13*vx[VW];
float oz = p20*vx[VX] + p21*vx[VY] + p22*vx[VZ] + p23*vx[VW];
float ow = p30*vx[VX] + p31*vx[VY] + p32*vx[VZ] + p33*vx[VW];
if (ow != 0) {
ox /= ow; oy /= ow; oz /= ow;
}
vx[X] = width * (ONE + ox) / 2.0f;
vx[Y] = height * (ONE + oy) / 2.0f;
vx[Z] = (oz + ONE) / 2.0f;
}
// ------------------------------------------------------------------
// RENDER SHAPES FILLS HERE WHEN NOT DEPTH SORTING
// if true, the shapes will be rendered on endFrame
if (hints[DEPTH_SORT]) {
shape = 0;
return;
if (!hints[DEPTH_SORT]) {
if (fill) render_triangles();
if (stroke) render_lines();
}
if (fill) render_triangles();
if (stroke) render_lines();
shape = 0;
}
@@ -997,6 +1016,8 @@ public class PGraphics3 extends PGraphics {
* from code by john w. ratcliff (jratcliff at verant.com)
*/
private void triangulate_polygon() {
System.out.println("triangulating polygon " +
vertex_start + " " + vertex_end);
// first we check if the polygon goes clockwise or counterclockwise
float area = 0.0f;
@@ -1103,7 +1124,7 @@ public class PGraphics3 extends PGraphics {
* so that other renderers can override. For instance, with OpenGL,
* this section is all handled on the graphics card.
*/
protected void light_and_transform() {
protected void handle_lighting() {
// ------------------------------------------------------------------
// CULLING
@@ -1203,27 +1224,6 @@ public class PGraphics3 extends PGraphics {
//for (int i = 0; i < triangleCount; i ++) {
//}
//}
// ------------------------------------------------------------------
// POINTS FROM VIEW SPACE (VX, VY, VZ) TO SCREEN SPACE (X, Y, Z)
for (int i = vertex_start; i < vertex_end; i++) {
float vx[] = vertices[i];
float ox = p00*vx[VX] + p01*vx[VY] + p02*vx[VZ] + p03*vx[VW];
float oy = p10*vx[VX] + p11*vx[VY] + p12*vx[VZ] + p13*vx[VW];
float oz = p20*vx[VX] + p21*vx[VY] + p22*vx[VZ] + p23*vx[VW];
float ow = p30*vx[VX] + p31*vx[VY] + p32*vx[VZ] + p33*vx[VW];
if (ow != 0) {
ox /= ow; oy /= ow; oz /= ow;
}
vx[X] = width * (ONE + ox) / 2.0f;
vx[Y] = height * (ONE + oy) / 2.0f;
vx[Z] = (oz + ONE) / 2.0f;
}
}