sigonasr2/SigRenderer2
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Initial texture mapping implementation.

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Co-authored-by: sigonasr2 <sigonasr2@gmail.com>
This commit is contained in:
sigonasr2, Sig, Sigo 2021-11-03 11:12:04 +00:00
parent f70e1a4dbe
commit 9ea6587bdf
2 changed files with 24 additions and 20 deletions
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4
src/sig/Vector2.java
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@ -9,4 +9,8 @@ public class Vector2 {
this.u=u;
this.v=v;
}
@Override
protected Object clone(){
return new Vector2(u,v);
}
}

40
src/sig/utils/DrawUtils.java
View File

@ -36,23 +36,23 @@ public class DrawUtils {
du1_step=0,dv1_step=0,
du2_step=0,dv2_step=0;
if (dy1!=0) {dax_step=dx1/(float)Math.abs(dy1);}
if (dy2!=0) {dbx_step=dx2/(float)Math.abs(dy2);}
if (dy1!=0) {dax_step=dx1/((float)Math.abs(dy1));}
if (dy2!=0) {dbx_step=dx2/((float)Math.abs(dy2));}
if (dy1!=0) {du1_step=du1/(float)Math.abs(dy1);}
if (dy1!=0) {dv1_step=dv1/(float)Math.abs(dy1);}
if (dy2!=0) {du2_step=du2/(float)Math.abs(dy2);}
if (dy2!=0) {dv2_step=dv2/(float)Math.abs(dy2);}
if (dy1!=0) {du1_step=du1/((float)Math.abs(dy1));}
if (dy1!=0) {dv1_step=dv1/((float)Math.abs(dy1));}
if (dy2!=0) {du2_step=du2/((float)Math.abs(dy2));}
if (dy2!=0) {dv2_step=dv2/((float)Math.abs(dy2));}
if (dy1!=0) {
for (int i=y1;i<=y2;i++) {
int ax=(int)(x1+(float)(i-y1)*dax_step);
int bx=(int)(x1+(float)(i-y1)*dbx_step);
int ax=(int)(x1+((float)(i-y1))*dax_step);
int bx=(int)(x1+((float)(i-y1))*dbx_step);
float tex_su=(int)(u1+(float)(i-y1)*du1_step);
float tex_sv=(int)(v1+(float)(i-y1)*dv1_step);
float tex_eu=(int)(u1+(float)(i-y1)*du2_step);
float tex_ev=(int)(v1+(float)(i-y1)*dv2_step);
float tex_su=u1+((float)(i-y1))*du1_step;
float tex_sv=v1+((float)(i-y1))*dv1_step;
float tex_eu=u1+((float)(i-y1))*du2_step;
float tex_ev=v1+((float)(i-y1))*dv2_step;
if (ax>bx) {
int t=ax;ax=bx;bx=t;
@ -79,22 +79,22 @@ public class DrawUtils {
dx1=x3-x2;
dv1=v3-v2;
du1=u3-u2;
if (dy1!=0) {dax_step=dx1/(float)Math.abs(dy1);}
if (dy2!=0) {dbx_step=dx2/(float)Math.abs(dy2);}
if (dy1!=0) {dax_step=dx1/((float)Math.abs(dy1));}
if (dy2!=0) {dbx_step=dx2/((float)Math.abs(dy2));}
du1_step=0f;
dv1_step=0f;
if (dy1!=0) {du1_step=du1/(float)Math.abs(dy1);}
if (dy1!=0) {dv1_step=dv1/(float)Math.abs(dy1);}
if (dy1!=0) {du1_step=du1/((float)Math.abs(dy1));}
if (dy1!=0) {dv1_step=dv1/((float)Math.abs(dy1));}
if (dy1!=0) {
for (int i=y2;i<=y3;i++) {
int ax=(int)(x2+(float)(i-y2)*dax_step);
int bx=(int)(x1+(float)(i-y1)*dbx_step);
float tex_su=(int)(u2+(float)(i-y2)*du1_step);
float tex_sv=(int)(v2+(float)(i-y2)*dv1_step);
float tex_eu=(int)(u1+(float)(i-y1)*du2_step);
float tex_ev=(int)(v1+(float)(i-y1)*dv2_step);
float tex_su=u2+((float)(i-y2))*du1_step;
float tex_sv=v2+((float)(i-y2))*dv1_step;
float tex_eu=u1+((float)(i-y1))*du2_step;
float tex_ev=v1+((float)(i-y1))*dv2_step;
if (ax>bx) {
int t=ax;ax=bx;bx=t;